/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/safe016_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 10:58:19,903 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 10:58:19,905 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 10:58:19,922 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 10:58:19,923 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 10:58:19,925 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 10:58:19,927 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 10:58:19,940 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 10:58:19,942 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 10:58:19,943 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 10:58:19,945 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 10:58:19,946 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 10:58:19,946 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 10:58:19,948 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 10:58:19,949 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 10:58:19,953 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 10:58:19,953 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 10:58:19,955 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 10:58:19,956 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 10:58:19,962 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 10:58:19,967 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 10:58:19,968 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 10:58:19,970 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 10:58:19,970 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 10:58:19,973 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 10:58:19,974 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 10:58:19,974 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 10:58:19,976 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 10:58:19,977 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 10:58:19,979 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 10:58:19,980 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 10:58:19,981 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 10:58:19,982 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 10:58:19,983 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 10:58:19,985 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 10:58:19,985 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 10:58:19,986 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 10:58:19,987 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 10:58:19,987 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 10:58:19,990 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 10:58:19,991 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 10:58:19,992 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 10:58:20,010 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 10:58:20,010 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 10:58:20,012 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 10:58:20,012 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 10:58:20,012 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 10:58:20,013 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 10:58:20,013 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 10:58:20,013 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 10:58:20,013 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 10:58:20,013 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 10:58:20,015 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 10:58:20,015 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 10:58:20,015 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 10:58:20,016 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 10:58:20,016 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 10:58:20,016 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 10:58:20,016 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 10:58:20,016 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 10:58:20,017 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 10:58:20,017 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 10:58:20,017 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 10:58:20,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 10:58:20,017 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 10:58:20,018 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 10:58:20,018 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 10:58:20,018 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 10:58:20,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 10:58:20,018 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 10:58:20,018 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 10:58:20,019 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 10:58:20,341 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 10:58:20,354 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 10:58:20,357 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 10:58:20,358 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 10:58:20,359 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 10:58:20,359 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_tso.opt.i [2020-04-18 10:58:20,425 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1f3f0c7b/198293ac1d3c4f388eeec78d295ef875/FLAGb529c8356 [2020-04-18 10:58:20,943 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 10:58:20,944 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_tso.opt.i [2020-04-18 10:58:20,957 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1f3f0c7b/198293ac1d3c4f388eeec78d295ef875/FLAGb529c8356 [2020-04-18 10:58:21,239 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1f3f0c7b/198293ac1d3c4f388eeec78d295ef875 [2020-04-18 10:58:21,249 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 10:58:21,267 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 10:58:21,268 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 10:58:21,268 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 10:58:21,272 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 10:58:21,273 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 10:58:21" (1/1) ... [2020-04-18 10:58:21,275 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4583b048 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:58:21, skipping insertion in model container [2020-04-18 10:58:21,276 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 10:58:21" (1/1) ... [2020-04-18 10:58:21,283 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 10:58:21,330 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 10:58:21,843 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 10:58:21,858 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 10:58:21,944 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 10:58:22,022 INFO L208 MainTranslator]: Completed translation [2020-04-18 10:58:22,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:58:22 WrapperNode [2020-04-18 10:58:22,023 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 10:58:22,024 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 10:58:22,024 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 10:58:22,024 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 10:58:22,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:58:22" (1/1) ... [2020-04-18 10:58:22,046 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:58:22" (1/1) ... [2020-04-18 10:58:22,071 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 10:58:22,071 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 10:58:22,071 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 10:58:22,071 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 10:58:22,080 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:58:22" (1/1) ... [2020-04-18 10:58:22,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:58:22" (1/1) ... [2020-04-18 10:58:22,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:58:22" (1/1) ... [2020-04-18 10:58:22,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:58:22" (1/1) ... [2020-04-18 10:58:22,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:58:22" (1/1) ... [2020-04-18 10:58:22,093 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:58:22" (1/1) ... [2020-04-18 10:58:22,095 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:58:22" (1/1) ... [2020-04-18 10:58:22,098 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 10:58:22,098 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 10:58:22,099 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 10:58:22,099 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 10:58:22,100 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:58:22" (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 10:58:22,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 10:58:22,161 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 10:58:22,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 10:58:22,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 10:58:22,162 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 10:58:22,163 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 10:58:22,163 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 10:58:22,163 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 10:58:22,164 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 10:58:22,164 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 10:58:22,164 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-04-18 10:58:22,164 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-04-18 10:58:22,164 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 10:58:22,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 10:58:22,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 10:58:22,166 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 10:58:22,552 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 10:58:22,552 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 10:58:22,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 10:58:22 BoogieIcfgContainer [2020-04-18 10:58:22,565 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 10:58:22,566 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 10:58:22,567 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 10:58:22,570 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 10:58:22,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 10:58:21" (1/3) ... [2020-04-18 10:58:22,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37af4cd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 10:58:22, skipping insertion in model container [2020-04-18 10:58:22,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:58:22" (2/3) ... [2020-04-18 10:58:22,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37af4cd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 10:58:22, skipping insertion in model container [2020-04-18 10:58:22,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 10:58:22" (3/3) ... [2020-04-18 10:58:22,575 INFO L109 eAbstractionObserver]: Analyzing ICFG safe016_tso.opt.i [2020-04-18 10:58:22,583 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 10:58:22,583 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 10:58:22,589 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 10:58:22,590 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 10:58:22,617 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:58:22,617 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:58:22,617 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:58:22,618 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:58:22,618 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:58:22,619 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:58:22,619 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:58:22,619 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:58:22,620 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:58:22,620 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:58:22,620 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:58:22,620 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:58:22,621 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:58:22,621 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:58:22,621 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:58:22,622 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:58:22,622 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:58:22,622 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:58:22,623 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:58:22,623 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:58:22,623 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:58:22,624 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:58:22,624 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:58:22,624 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:58:22,628 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:58:22,629 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:58:22,629 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:58:22,630 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:58:22,635 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:58:22,636 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:58:22,636 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:58:22,636 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:58:22,639 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:58:22,639 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:58:22,639 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:58:22,640 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:58:22,642 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:58:22,642 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:58:22,643 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:58:22,643 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:58:22,661 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-04-18 10:58:22,679 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 10:58:22,679 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 10:58:22,679 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 10:58:22,679 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 10:58:22,680 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 10:58:22,680 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 10:58:22,680 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 10:58:22,680 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 10:58:22,695 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 80 transitions, 180 flow [2020-04-18 10:58:22,697 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-04-18 10:58:22,741 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-04-18 10:58:22,742 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 10:58:22,747 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 2/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-04-18 10:58:22,751 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-04-18 10:58:22,775 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-04-18 10:58:22,775 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 10:58:22,776 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 2/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-04-18 10:58:22,779 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1822 [2020-04-18 10:58:22,780 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 10:58:24,667 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2895 [2020-04-18 10:58:24,668 INFO L214 etLargeBlockEncoding]: Total number of compositions: 62 [2020-04-18 10:58:24,672 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2020-04-18 10:58:24,742 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 850 states. [2020-04-18 10:58:24,745 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states. [2020-04-18 10:58:24,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 10:58:24,757 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:58:24,758 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:58:24,758 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:58:24,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:58:24,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1118879254, now seen corresponding path program 1 times [2020-04-18 10:58:24,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:58:24,778 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [400890762] [2020-04-18 10:58:24,801 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:58:24,817 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 10:58:24,819 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-04-18 10:58:24,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 10:58:24,821 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:58:24,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:58:24,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1118879254, now seen corresponding path program 2 times [2020-04-18 10:58:24,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:58:24,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735772432] [2020-04-18 10:58:24,831 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:58:24,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:58:25,082 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 10:58:25,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735772432] [2020-04-18 10:58:25,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:58:25,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:58:25,086 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:58:25,088 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:58:25,096 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 10:58:25,096 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:58:25,099 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:58:25,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 10:58:25,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 10:58:25,104 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2020-04-18 10:58:25,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:58:25,107 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2020-04-18 10:58:25,107 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2020-04-18 10:58:25,107 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:58:25,108 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [400890762] [2020-04-18 10:58:25,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:58:25,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:58:25,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [400890762] [2020-04-18 10:58:25,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-18 10:58:25,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:58:25,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 10:58:25,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 10:58:25,116 INFO L87 Difference]: Start difference. First operand 850 states. Second operand 2 states. [2020-04-18 10:58:25,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:58:25,162 INFO L93 Difference]: Finished difference Result 850 states and 2994 transitions. [2020-04-18 10:58:25,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-18 10:58:25,164 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-04-18 10:58:25,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:58:25,198 INFO L225 Difference]: With dead ends: 850 [2020-04-18 10:58:25,198 INFO L226 Difference]: Without dead ends: 706 [2020-04-18 10:58:25,200 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 10:58:25,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-04-18 10:58:25,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2020-04-18 10:58:25,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2020-04-18 10:58:25,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2020-04-18 10:58:25,352 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2020-04-18 10:58:25,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:58:25,353 INFO L479 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2020-04-18 10:58:25,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-18 10:58:25,353 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2020-04-18 10:58:25,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 10:58:25,363 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:58:25,363 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:58:25,364 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:58:25,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:58:25,364 INFO L82 PathProgramCache]: Analyzing trace with hash -325524913, now seen corresponding path program 1 times [2020-04-18 10:58:25,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:58:25,365 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [698139600] [2020-04-18 10:58:25,366 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:58:25,366 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-04-18 10:58:25,367 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-04-18 10:58:25,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 10:58:25,368 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:58:25,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:58:25,368 INFO L82 PathProgramCache]: Analyzing trace with hash -325524913, now seen corresponding path program 2 times [2020-04-18 10:58:25,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:58:25,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759335313] [2020-04-18 10:58:25,369 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:58:25,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:58:25,508 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 10:58:25,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759335313] [2020-04-18 10:58:25,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:58:25,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:58:25,511 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:58:25,512 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:58:25,515 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-04-18 10:58:25,515 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:58:25,526 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:58:25,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:58:25,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:58:25,527 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 4 states. [2020-04-18 10:58:25,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:58:25,541 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2020-04-18 10:58:25,541 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2020-04-18 10:58:25,541 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:58:25,542 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [698139600] [2020-04-18 10:58:25,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:58:25,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:58:25,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [698139600] [2020-04-18 10:58:25,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 10:58:25,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:58:25,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:58:25,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:58:25,544 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand 4 states. [2020-04-18 10:58:25,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:58:25,578 INFO L93 Difference]: Finished difference Result 778 states and 2592 transitions. [2020-04-18 10:58:25,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 10:58:25,579 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-18 10:58:25,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:58:25,587 INFO L225 Difference]: With dead ends: 778 [2020-04-18 10:58:25,588 INFO L226 Difference]: Without dead ends: 634 [2020-04-18 10:58:25,589 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:58:25,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2020-04-18 10:58:25,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 634. [2020-04-18 10:58:25,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 634 states. [2020-04-18 10:58:25,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 2148 transitions. [2020-04-18 10:58:25,648 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 2148 transitions. Word has length 11 [2020-04-18 10:58:25,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:58:25,648 INFO L479 AbstractCegarLoop]: Abstraction has 634 states and 2148 transitions. [2020-04-18 10:58:25,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 10:58:25,648 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 2148 transitions. [2020-04-18 10:58:25,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:58:25,650 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:58:25,650 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:58:25,651 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:58:25,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:58:25,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1068447712, now seen corresponding path program 1 times [2020-04-18 10:58:25,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:58:25,652 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1915513286] [2020-04-18 10:58:25,652 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:58:25,653 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 30 transitions. [2020-04-18 10:58:25,653 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-04-18 10:58:25,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:58:25,654 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:58:25,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:58:25,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1068447712, now seen corresponding path program 2 times [2020-04-18 10:58:25,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:58:25,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423820822] [2020-04-18 10:58:25,655 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:58:25,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:58:25,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:58:25,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423820822] [2020-04-18 10:58:25,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:58:25,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:58:25,776 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:58:25,777 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:58:25,779 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 26 transitions. [2020-04-18 10:58:25,780 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:58:25,789 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:58:25,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:58:25,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:58:25,790 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 4 states. [2020-04-18 10:58:25,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:58:25,800 INFO L93 Difference]: Finished difference Result 22 states and 30 transitions. [2020-04-18 10:58:25,801 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2020-04-18 10:58:25,801 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:58:25,801 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1915513286] [2020-04-18 10:58:25,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:58:25,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:58:25,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1915513286] [2020-04-18 10:58:25,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 10:58:25,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:58:25,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:58:25,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:58:25,803 INFO L87 Difference]: Start difference. First operand 634 states and 2148 transitions. Second operand 4 states. [2020-04-18 10:58:25,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:58:25,835 INFO L93 Difference]: Finished difference Result 718 states and 2351 transitions. [2020-04-18 10:58:25,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 10:58:25,839 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-18 10:58:25,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:58:25,844 INFO L225 Difference]: With dead ends: 718 [2020-04-18 10:58:25,845 INFO L226 Difference]: Without dead ends: 610 [2020-04-18 10:58:25,845 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 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 10:58:25,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2020-04-18 10:58:25,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 610. [2020-04-18 10:58:25,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 610 states. [2020-04-18 10:58:25,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 2042 transitions. [2020-04-18 10:58:25,870 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 2042 transitions. Word has length 12 [2020-04-18 10:58:25,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:58:25,870 INFO L479 AbstractCegarLoop]: Abstraction has 610 states and 2042 transitions. [2020-04-18 10:58:25,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 10:58:25,870 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 2042 transitions. [2020-04-18 10:58:25,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:58:25,872 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:58:25,872 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:58:25,872 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:58:25,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:58:25,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1923922428, now seen corresponding path program 1 times [2020-04-18 10:58:25,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:58:25,873 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1566266244] [2020-04-18 10:58:25,874 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:58:25,874 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 49 transitions. [2020-04-18 10:58:25,875 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-04-18 10:58:25,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:58:25,875 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:58:25,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:58:25,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1923922428, now seen corresponding path program 2 times [2020-04-18 10:58:25,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:58:25,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900548314] [2020-04-18 10:58:25,877 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:58:25,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:58:25,952 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 10:58:25,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900548314] [2020-04-18 10:58:25,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:58:25,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:58:25,954 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:58:25,956 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:58:25,960 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 41 transitions. [2020-04-18 10:58:25,960 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:58:25,973 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:58:25,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:58:25,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:58:25,974 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 4 states. [2020-04-18 10:58:25,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:58:25,987 INFO L93 Difference]: Finished difference Result 32 states and 49 transitions. [2020-04-18 10:58:25,987 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 49 transitions. [2020-04-18 10:58:25,987 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:58:25,988 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1566266244] [2020-04-18 10:58:25,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:58:25,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:58:25,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1566266244] [2020-04-18 10:58:25,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 10:58:25,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:58:25,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:58:25,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:58:25,990 INFO L87 Difference]: Start difference. First operand 610 states and 2042 transitions. Second operand 4 states. [2020-04-18 10:58:26,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:58:26,024 INFO L93 Difference]: Finished difference Result 674 states and 2178 transitions. [2020-04-18 10:58:26,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 10:58:26,025 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-18 10:58:26,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:58:26,029 INFO L225 Difference]: With dead ends: 674 [2020-04-18 10:58:26,030 INFO L226 Difference]: Without dead ends: 578 [2020-04-18 10:58:26,030 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 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 10:58:26,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-04-18 10:58:26,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 578. [2020-04-18 10:58:26,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2020-04-18 10:58:26,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 1906 transitions. [2020-04-18 10:58:26,052 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 1906 transitions. Word has length 13 [2020-04-18 10:58:26,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:58:26,053 INFO L479 AbstractCegarLoop]: Abstraction has 578 states and 1906 transitions. [2020-04-18 10:58:26,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 10:58:26,053 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 1906 transitions. [2020-04-18 10:58:26,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:58:26,055 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:58:26,055 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:58:26,055 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:58:26,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:58:26,055 INFO L82 PathProgramCache]: Analyzing trace with hash -488944074, now seen corresponding path program 1 times [2020-04-18 10:58:26,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:58:26,057 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [673849597] [2020-04-18 10:58:26,057 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:58:26,059 INFO L259 McrAutomatonBuilder]: Finished intersection with 44 states and 78 transitions. [2020-04-18 10:58:26,060 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-04-18 10:58:26,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:58:26,060 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:58:26,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:58:26,061 INFO L82 PathProgramCache]: Analyzing trace with hash -488944074, now seen corresponding path program 2 times [2020-04-18 10:58:26,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:58:26,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871443710] [2020-04-18 10:58:26,062 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:58:26,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:58:26,154 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 10:58:26,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871443710] [2020-04-18 10:58:26,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:58:26,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:58:26,155 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:58:26,156 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:58:26,159 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 49 transitions. [2020-04-18 10:58:26,160 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:58:26,171 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:58:26,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:58:26,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:58:26,172 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-04-18 10:58:26,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:58:26,185 INFO L93 Difference]: Finished difference Result 44 states and 78 transitions. [2020-04-18 10:58:26,185 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 78 transitions. [2020-04-18 10:58:26,186 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:58:26,186 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [673849597] [2020-04-18 10:58:26,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:58:26,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:58:26,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [673849597] [2020-04-18 10:58:26,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 10:58:26,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:58:26,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:58:26,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:58:26,189 INFO L87 Difference]: Start difference. First operand 578 states and 1906 transitions. Second operand 4 states. [2020-04-18 10:58:26,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:58:26,213 INFO L93 Difference]: Finished difference Result 610 states and 1962 transitions. [2020-04-18 10:58:26,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 10:58:26,214 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-04-18 10:58:26,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:58:26,220 INFO L225 Difference]: With dead ends: 610 [2020-04-18 10:58:26,222 INFO L226 Difference]: Without dead ends: 546 [2020-04-18 10:58:26,225 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 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 10:58:26,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2020-04-18 10:58:26,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 546. [2020-04-18 10:58:26,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 546 states. [2020-04-18 10:58:26,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 1786 transitions. [2020-04-18 10:58:26,247 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 1786 transitions. Word has length 14 [2020-04-18 10:58:26,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:58:26,248 INFO L479 AbstractCegarLoop]: Abstraction has 546 states and 1786 transitions. [2020-04-18 10:58:26,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 10:58:26,248 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 1786 transitions. [2020-04-18 10:58:26,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:58:26,250 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:58:26,250 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:58:26,250 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:58:26,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:58:26,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1533442537, now seen corresponding path program 1 times [2020-04-18 10:58:26,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:58:26,255 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1099130055] [2020-04-18 10:58:26,256 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:58:26,257 INFO L259 McrAutomatonBuilder]: Finished intersection with 68 states and 139 transitions. [2020-04-18 10:58:26,260 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2020-04-18 10:58:26,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:58:26,261 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:58:26,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:58:26,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1533442537, now seen corresponding path program 2 times [2020-04-18 10:58:26,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:58:26,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258895914] [2020-04-18 10:58:26,263 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:58:26,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:58:26,365 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 10:58:26,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258895914] [2020-04-18 10:58:26,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:58:26,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:58:26,367 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:58:26,368 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:58:26,373 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 55 transitions. [2020-04-18 10:58:26,373 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:58:26,389 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:58:26,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:58:26,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:58:26,390 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 4 states. [2020-04-18 10:58:26,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:58:26,413 INFO L93 Difference]: Finished difference Result 74 states and 146 transitions. [2020-04-18 10:58:26,413 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 146 transitions. [2020-04-18 10:58:26,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:58:26,414 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:58:26,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:58:26,414 INFO L82 PathProgramCache]: Analyzing trace with hash 350276811, now seen corresponding path program 3 times [2020-04-18 10:58:26,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:58:26,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016340031] [2020-04-18 10:58:26,415 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:58:26,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:58:26,498 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 10:58:26,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016340031] [2020-04-18 10:58:26,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:58:26,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:58:26,499 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:58:26,500 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:58:26,504 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 54 transitions. [2020-04-18 10:58:26,505 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:58:26,514 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:58:26,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:58:26,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 10:58:26,514 INFO L87 Difference]: Start difference. First operand 74 states and 146 transitions. Second operand 4 states. [2020-04-18 10:58:26,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:58:26,536 INFO L93 Difference]: Finished difference Result 74 states and 146 transitions. [2020-04-18 10:58:26,537 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 146 transitions. [2020-04-18 10:58:26,537 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:58:26,537 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1099130055] [2020-04-18 10:58:26,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:58:26,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 10:58:26,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1099130055] [2020-04-18 10:58:26,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 10:58:26,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:58:26,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:58:26,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-18 10:58:26,539 INFO L87 Difference]: Start difference. First operand 546 states and 1786 transitions. Second operand 5 states. [2020-04-18 10:58:26,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:58:26,586 INFO L93 Difference]: Finished difference Result 794 states and 2462 transitions. [2020-04-18 10:58:26,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 10:58:26,587 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-04-18 10:58:26,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:58:26,592 INFO L225 Difference]: With dead ends: 794 [2020-04-18 10:58:26,593 INFO L226 Difference]: Without dead ends: 578 [2020-04-18 10:58:26,593 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-18 10:58:26,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-04-18 10:58:26,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 514. [2020-04-18 10:58:26,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 514 states. [2020-04-18 10:58:26,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 1598 transitions. [2020-04-18 10:58:26,635 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 1598 transitions. Word has length 15 [2020-04-18 10:58:26,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:58:26,635 INFO L479 AbstractCegarLoop]: Abstraction has 514 states and 1598 transitions. [2020-04-18 10:58:26,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 10:58:26,635 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 1598 transitions. [2020-04-18 10:58:26,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:58:26,637 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:58:26,637 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:58:26,638 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:58:26,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:58:26,638 INFO L82 PathProgramCache]: Analyzing trace with hash 350267355, now seen corresponding path program 1 times [2020-04-18 10:58:26,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:58:26,639 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1109591059] [2020-04-18 10:58:26,640 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:58:26,643 INFO L259 McrAutomatonBuilder]: Finished intersection with 86 states and 204 transitions. [2020-04-18 10:58:26,644 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states. [2020-04-18 10:58:26,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:58:26,644 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:58:26,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:58:26,645 INFO L82 PathProgramCache]: Analyzing trace with hash 350276865, now seen corresponding path program 2 times [2020-04-18 10:58:26,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:58:26,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076314671] [2020-04-18 10:58:26,646 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:58:26,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:58:26,708 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 10:58:26,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076314671] [2020-04-18 10:58:26,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:58:26,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:58:26,710 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:58:26,711 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:58:26,720 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 54 transitions. [2020-04-18 10:58:26,720 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:58:26,730 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:58:26,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:58:26,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:58:26,731 INFO L87 Difference]: Start difference. First operand 86 states. Second operand 4 states. [2020-04-18 10:58:26,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:58:26,758 INFO L93 Difference]: Finished difference Result 98 states and 224 transitions. [2020-04-18 10:58:26,759 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 224 transitions. [2020-04-18 10:58:26,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:58:26,759 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:58:26,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:58:26,760 INFO L82 PathProgramCache]: Analyzing trace with hash 350267355, now seen corresponding path program 3 times [2020-04-18 10:58:26,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:58:26,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948798045] [2020-04-18 10:58:26,761 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:58:26,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:58:26,806 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 10:58:26,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948798045] [2020-04-18 10:58:26,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:58:26,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:58:26,807 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:58:26,808 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:58:26,818 INFO L259 McrAutomatonBuilder]: Finished intersection with 44 states and 80 transitions. [2020-04-18 10:58:26,818 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:58:26,831 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:58:26,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:58:26,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 10:58:26,832 INFO L87 Difference]: Start difference. First operand 98 states and 224 transitions. Second operand 5 states. [2020-04-18 10:58:26,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:58:26,884 INFO L93 Difference]: Finished difference Result 115 states and 245 transitions. [2020-04-18 10:58:26,885 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 245 transitions. [2020-04-18 10:58:26,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:58:26,885 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:58:26,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:58:26,886 INFO L82 PathProgramCache]: Analyzing trace with hash -432648259, now seen corresponding path program 4 times [2020-04-18 10:58:26,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:58:26,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380204721] [2020-04-18 10:58:26,886 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:58:26,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:58:26,929 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 10:58:26,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380204721] [2020-04-18 10:58:26,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:58:26,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:58:26,930 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:58:26,931 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:58:26,935 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 61 transitions. [2020-04-18 10:58:26,935 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:58:27,031 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:58:27,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 10:58:27,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-04-18 10:58:27,032 INFO L87 Difference]: Start difference. First operand 115 states and 245 transitions. Second operand 7 states. [2020-04-18 10:58:27,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:58:27,108 INFO L93 Difference]: Finished difference Result 133 states and 266 transitions. [2020-04-18 10:58:27,109 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 266 transitions. [2020-04-18 10:58:27,109 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:58:27,110 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1109591059] [2020-04-18 10:58:27,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:58:27,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 10:58:27,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1109591059] [2020-04-18 10:58:27,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-04-18 10:58:27,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:58:27,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 10:58:27,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2020-04-18 10:58:27,111 INFO L87 Difference]: Start difference. First operand 514 states and 1598 transitions. Second operand 10 states. [2020-04-18 10:58:27,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:58:27,328 INFO L93 Difference]: Finished difference Result 1222 states and 3596 transitions. [2020-04-18 10:58:27,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-04-18 10:58:27,329 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-04-18 10:58:27,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:58:27,332 INFO L225 Difference]: With dead ends: 1222 [2020-04-18 10:58:27,332 INFO L226 Difference]: Without dead ends: 370 [2020-04-18 10:58:27,333 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2020-04-18 10:58:27,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2020-04-18 10:58:27,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 322. [2020-04-18 10:58:27,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2020-04-18 10:58:27,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 910 transitions. [2020-04-18 10:58:27,344 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 910 transitions. Word has length 15 [2020-04-18 10:58:27,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:58:27,344 INFO L479 AbstractCegarLoop]: Abstraction has 322 states and 910 transitions. [2020-04-18 10:58:27,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-04-18 10:58:27,345 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 910 transitions. [2020-04-18 10:58:27,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:58:27,346 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:58:27,346 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:58:27,346 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:58:27,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:58:27,346 INFO L82 PathProgramCache]: Analyzing trace with hash -96752386, now seen corresponding path program 1 times [2020-04-18 10:58:27,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:58:27,347 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [23365260] [2020-04-18 10:58:27,347 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:58:27,349 INFO L259 McrAutomatonBuilder]: Finished intersection with 94 states and 240 transitions. [2020-04-18 10:58:27,350 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states. [2020-04-18 10:58:27,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:58:27,351 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:58:27,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:58:27,351 INFO L82 PathProgramCache]: Analyzing trace with hash 659656400, now seen corresponding path program 2 times [2020-04-18 10:58:27,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:58:27,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70863858] [2020-04-18 10:58:27,352 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:58:27,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:58:27,390 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 10:58:27,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70863858] [2020-04-18 10:58:27,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:58:27,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:58:27,391 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:58:27,393 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:58:27,397 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 55 transitions. [2020-04-18 10:58:27,397 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:58:27,407 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:58:27,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:58:27,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:58:27,408 INFO L87 Difference]: Start difference. First operand 94 states. Second operand 4 states. [2020-04-18 10:58:27,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:58:27,427 INFO L93 Difference]: Finished difference Result 110 states and 272 transitions. [2020-04-18 10:58:27,427 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 272 transitions. [2020-04-18 10:58:27,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:58:27,428 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:58:27,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:58:27,428 INFO L82 PathProgramCache]: Analyzing trace with hash 659646890, now seen corresponding path program 3 times [2020-04-18 10:58:27,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:58:27,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115079709] [2020-04-18 10:58:27,429 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:58:27,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:58:27,472 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 10:58:27,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115079709] [2020-04-18 10:58:27,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:58:27,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:58:27,473 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:58:27,475 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:58:27,480 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 75 transitions. [2020-04-18 10:58:27,480 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:58:27,495 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:58:27,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:58:27,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 10:58:27,496 INFO L87 Difference]: Start difference. First operand 110 states and 272 transitions. Second operand 5 states. [2020-04-18 10:58:27,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:58:27,548 INFO L93 Difference]: Finished difference Result 136 states and 315 transitions. [2020-04-18 10:58:27,549 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 315 transitions. [2020-04-18 10:58:27,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:58:27,550 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:58:27,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:58:27,550 INFO L82 PathProgramCache]: Analyzing trace with hash -96752386, now seen corresponding path program 4 times [2020-04-18 10:58:27,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:58:27,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877795187] [2020-04-18 10:58:27,551 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:58:27,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:58:27,599 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 10:58:27,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877795187] [2020-04-18 10:58:27,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:58:27,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:58:27,601 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:58:27,603 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:58:27,608 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 51 transitions. [2020-04-18 10:58:27,608 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:58:27,641 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:58:27,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 10:58:27,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-04-18 10:58:27,642 INFO L87 Difference]: Start difference. First operand 136 states and 315 transitions. Second operand 6 states. [2020-04-18 10:58:27,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:58:27,699 INFO L93 Difference]: Finished difference Result 173 states and 373 transitions. [2020-04-18 10:58:27,699 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 373 transitions. [2020-04-18 10:58:27,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:58:27,700 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 10:58:27,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:58:27,700 INFO L82 PathProgramCache]: Analyzing trace with hash 807678122, now seen corresponding path program 5 times [2020-04-18 10:58:27,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:58:27,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598668755] [2020-04-18 10:58:27,701 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:58:27,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:58:27,780 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 10:58:27,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598668755] [2020-04-18 10:58:27,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:58:27,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:58:27,803 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:58:27,804 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:58:27,809 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 55 transitions. [2020-04-18 10:58:27,809 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:58:27,879 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:58:27,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:58:27,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-04-18 10:58:27,880 INFO L87 Difference]: Start difference. First operand 173 states and 373 transitions. Second operand 4 states. [2020-04-18 10:58:27,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:58:27,901 INFO L93 Difference]: Finished difference Result 173 states and 373 transitions. [2020-04-18 10:58:27,901 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 373 transitions. [2020-04-18 10:58:27,902 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:58:27,903 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [23365260] [2020-04-18 10:58:27,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:58:27,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 10:58:27,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [23365260] [2020-04-18 10:58:27,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-04-18 10:58:27,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:58:27,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 10:58:27,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2020-04-18 10:58:27,904 INFO L87 Difference]: Start difference. First operand 322 states and 910 transitions. Second operand 10 states. [2020-04-18 10:58:28,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:58:28,409 INFO L93 Difference]: Finished difference Result 560 states and 1394 transitions. [2020-04-18 10:58:28,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-04-18 10:58:28,410 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-04-18 10:58:28,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:58:28,411 INFO L225 Difference]: With dead ends: 560 [2020-04-18 10:58:28,411 INFO L226 Difference]: Without dead ends: 214 [2020-04-18 10:58:28,412 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 563 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=373, Invalid=1519, Unknown=0, NotChecked=0, Total=1892 [2020-04-18 10:58:28,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-04-18 10:58:28,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-04-18 10:58:28,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-04-18 10:58:28,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 534 transitions. [2020-04-18 10:58:28,418 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 534 transitions. Word has length 15 [2020-04-18 10:58:28,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:58:28,418 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 534 transitions. [2020-04-18 10:58:28,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-04-18 10:58:28,418 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 534 transitions. [2020-04-18 10:58:28,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 10:58:28,419 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:58:28,419 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:58:28,419 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:58:28,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:58:28,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1481069530, now seen corresponding path program 1 times [2020-04-18 10:58:28,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:58:28,420 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2051495163] [2020-04-18 10:58:28,420 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:58:28,422 INFO L259 McrAutomatonBuilder]: Finished intersection with 138 states and 378 transitions. [2020-04-18 10:58:28,424 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states. [2020-04-18 10:58:28,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 10:58:28,424 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:58:28,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:58:28,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1025487846, now seen corresponding path program 2 times [2020-04-18 10:58:28,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:58:28,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805021607] [2020-04-18 10:58:28,425 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:58:28,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:58:28,463 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 10:58:28,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805021607] [2020-04-18 10:58:28,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:58:28,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:58:28,465 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:58:28,466 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:58:28,470 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 58 transitions. [2020-04-18 10:58:28,470 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:58:28,480 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:58:28,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:58:28,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:58:28,481 INFO L87 Difference]: Start difference. First operand 138 states. Second operand 4 states. [2020-04-18 10:58:28,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:58:28,499 INFO L93 Difference]: Finished difference Result 170 states and 458 transitions. [2020-04-18 10:58:28,500 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 458 transitions. [2020-04-18 10:58:28,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 10:58:28,500 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:58:28,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:58:28,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1025782656, now seen corresponding path program 3 times [2020-04-18 10:58:28,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:58:28,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531611218] [2020-04-18 10:58:28,501 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:58:28,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:58:28,542 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 10:58:28,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531611218] [2020-04-18 10:58:28,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:58:28,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:58:28,543 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:58:28,544 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:58:28,549 INFO L259 McrAutomatonBuilder]: Finished intersection with 47 states and 84 transitions. [2020-04-18 10:58:28,549 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:58:28,562 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:58:28,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:58:28,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 10:58:28,563 INFO L87 Difference]: Start difference. First operand 170 states and 458 transitions. Second operand 5 states. [2020-04-18 10:58:28,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:58:28,604 INFO L93 Difference]: Finished difference Result 212 states and 537 transitions. [2020-04-18 10:58:28,605 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 537 transitions. [2020-04-18 10:58:28,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 10:58:28,605 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:58:28,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:58:28,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1295643564, now seen corresponding path program 4 times [2020-04-18 10:58:28,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:58:28,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723375174] [2020-04-18 10:58:28,606 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:58:28,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:58:28,651 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 10:58:28,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723375174] [2020-04-18 10:58:28,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:58:28,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:58:28,653 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:58:28,655 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:58:28,659 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 60 transitions. [2020-04-18 10:58:28,660 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:58:28,698 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:58:28,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 10:58:28,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-04-18 10:58:28,699 INFO L87 Difference]: Start difference. First operand 212 states and 537 transitions. Second operand 6 states. [2020-04-18 10:58:28,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:58:28,763 INFO L93 Difference]: Finished difference Result 286 states and 690 transitions. [2020-04-18 10:58:28,763 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 690 transitions. [2020-04-18 10:58:28,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 10:58:28,764 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 10:58:28,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:58:28,765 INFO L82 PathProgramCache]: Analyzing trace with hash -731781760, now seen corresponding path program 5 times [2020-04-18 10:58:28,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:58:28,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945964505] [2020-04-18 10:58:28,766 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:58:28,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:58:28,799 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 10:58:28,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945964505] [2020-04-18 10:58:28,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:58:28,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:58:28,800 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:58:28,801 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:58:28,808 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 72 transitions. [2020-04-18 10:58:28,808 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:58:28,840 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:58:28,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:58:28,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-04-18 10:58:28,841 INFO L87 Difference]: Start difference. First operand 286 states and 690 transitions. Second operand 4 states. [2020-04-18 10:58:28,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:58:28,907 INFO L93 Difference]: Finished difference Result 340 states and 785 transitions. [2020-04-18 10:58:28,907 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 785 transitions. [2020-04-18 10:58:28,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 10:58:28,908 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 10:58:28,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:58:28,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1481069530, now seen corresponding path program 6 times [2020-04-18 10:58:28,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:58:28,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068298502] [2020-04-18 10:58:28,910 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:58:28,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:58:28,964 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 10:58:28,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068298502] [2020-04-18 10:58:28,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:58:28,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:58:28,966 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:58:28,969 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:58:28,975 INFO L259 McrAutomatonBuilder]: Finished intersection with 43 states and 74 transitions. [2020-04-18 10:58:28,975 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:58:29,087 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 10 times. [2020-04-18 10:58:29,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 10:58:29,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2020-04-18 10:58:29,088 INFO L87 Difference]: Start difference. First operand 340 states and 785 transitions. Second operand 7 states. [2020-04-18 10:58:29,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:58:29,112 INFO L93 Difference]: Finished difference Result 340 states and 785 transitions. [2020-04-18 10:58:29,112 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 785 transitions. [2020-04-18 10:58:29,113 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:58:29,114 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2051495163] [2020-04-18 10:58:29,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:58:29,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 10:58:29,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2051495163] [2020-04-18 10:58:29,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-18 10:58:29,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:58:29,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 10:58:29,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2020-04-18 10:58:29,117 INFO L87 Difference]: Start difference. First operand 214 states and 534 transitions. Second operand 13 states. [2020-04-18 10:58:29,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:58:29,605 INFO L93 Difference]: Finished difference Result 211 states and 465 transitions. [2020-04-18 10:58:29,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-04-18 10:58:29,606 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16 [2020-04-18 10:58:29,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:58:29,607 INFO L225 Difference]: With dead ends: 211 [2020-04-18 10:58:29,607 INFO L226 Difference]: Without dead ends: 158 [2020-04-18 10:58:29,608 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=424, Invalid=1832, Unknown=0, NotChecked=0, Total=2256 [2020-04-18 10:58:29,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-04-18 10:58:29,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-04-18 10:58:29,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-04-18 10:58:29,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 339 transitions. [2020-04-18 10:58:29,613 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 339 transitions. Word has length 16 [2020-04-18 10:58:29,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:58:29,614 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 339 transitions. [2020-04-18 10:58:29,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-18 10:58:29,614 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 339 transitions. [2020-04-18 10:58:29,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 10:58:29,615 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:58:29,615 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 10:58:29,615 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:58:29,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:58:29,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1331262194, now seen corresponding path program 1 times [2020-04-18 10:58:29,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:58:29,616 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [193264882] [2020-04-18 10:58:29,617 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:58:29,619 INFO L259 McrAutomatonBuilder]: Finished intersection with 186 states and 542 transitions. [2020-04-18 10:58:29,621 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states. [2020-04-18 10:58:29,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 10:58:29,622 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:58:29,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:58:29,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1725351916, now seen corresponding path program 2 times [2020-04-18 10:58:29,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:58:29,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483387044] [2020-04-18 10:58:29,623 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:58:29,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:58:29,669 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 10:58:29,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483387044] [2020-04-18 10:58:29,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:58:29,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:58:29,670 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:58:29,671 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:58:29,675 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 61 transitions. [2020-04-18 10:58:29,676 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:58:29,685 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:58:29,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:58:29,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:58:29,685 INFO L87 Difference]: Start difference. First operand 186 states. Second operand 4 states. [2020-04-18 10:58:29,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:58:29,703 INFO L93 Difference]: Finished difference Result 234 states and 670 transitions. [2020-04-18 10:58:29,703 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 670 transitions. [2020-04-18 10:58:29,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 10:58:29,704 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:58:29,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:58:29,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1734491026, now seen corresponding path program 3 times [2020-04-18 10:58:29,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:58:29,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395001523] [2020-04-18 10:58:29,705 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:58:29,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:58:29,742 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 10:58:29,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395001523] [2020-04-18 10:58:29,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:58:29,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:58:29,744 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:58:29,745 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:58:29,754 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 89 transitions. [2020-04-18 10:58:29,755 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:58:29,771 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:58:29,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:58:29,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 10:58:29,772 INFO L87 Difference]: Start difference. First operand 234 states and 670 transitions. Second operand 5 states. [2020-04-18 10:58:29,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:58:29,819 INFO L93 Difference]: Finished difference Result 318 states and 870 transitions. [2020-04-18 10:58:29,819 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 870 transitions. [2020-04-18 10:58:29,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 10:58:29,820 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:58:29,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:58:29,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1510245058, now seen corresponding path program 4 times [2020-04-18 10:58:29,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:58:29,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129048405] [2020-04-18 10:58:29,821 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:58:29,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:58:29,865 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 10:58:29,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129048405] [2020-04-18 10:58:29,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:58:29,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:58:29,866 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:58:29,868 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:58:29,875 INFO L259 McrAutomatonBuilder]: Finished intersection with 41 states and 67 transitions. [2020-04-18 10:58:29,875 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:58:29,911 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:58:29,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 10:58:29,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-04-18 10:58:29,912 INFO L87 Difference]: Start difference. First operand 318 states and 870 transitions. Second operand 6 states. [2020-04-18 10:58:29,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:58:29,966 INFO L93 Difference]: Finished difference Result 434 states and 1134 transitions. [2020-04-18 10:58:29,966 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 1134 transitions. [2020-04-18 10:58:29,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 10:58:29,968 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 10:58:29,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:58:29,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1210397842, now seen corresponding path program 5 times [2020-04-18 10:58:29,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:58:29,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956501062] [2020-04-18 10:58:29,969 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:58:29,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:58:30,007 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 10:58:30,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956501062] [2020-04-18 10:58:30,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:58:30,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:58:30,008 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:58:30,010 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:58:30,018 INFO L259 McrAutomatonBuilder]: Finished intersection with 48 states and 84 transitions. [2020-04-18 10:58:30,018 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:58:30,045 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:58:30,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:58:30,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-04-18 10:58:30,046 INFO L87 Difference]: Start difference. First operand 434 states and 1134 transitions. Second operand 4 states. [2020-04-18 10:58:30,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:58:30,070 INFO L93 Difference]: Finished difference Result 612 states and 1503 transitions. [2020-04-18 10:58:30,071 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 1503 transitions. [2020-04-18 10:58:30,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 10:58:30,072 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 10:58:30,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:58:30,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1331485064, now seen corresponding path program 6 times [2020-04-18 10:58:30,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:58:30,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610379920] [2020-04-18 10:58:30,073 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:58:30,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:58:30,114 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 10:58:30,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610379920] [2020-04-18 10:58:30,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:58:30,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:58:30,155 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:58:30,157 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:58:30,163 INFO L259 McrAutomatonBuilder]: Finished intersection with 49 states and 86 transitions. [2020-04-18 10:58:30,163 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:58:30,251 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 10 times. [2020-04-18 10:58:30,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 10:58:30,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2020-04-18 10:58:30,252 INFO L87 Difference]: Start difference. First operand 612 states and 1503 transitions. Second operand 7 states. [2020-04-18 10:58:30,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:58:30,305 INFO L93 Difference]: Finished difference Result 646 states and 1548 transitions. [2020-04-18 10:58:30,305 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 1548 transitions. [2020-04-18 10:58:30,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 10:58:30,306 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 10:58:30,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:58:30,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1331262194, now seen corresponding path program 7 times [2020-04-18 10:58:30,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:58:30,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99787220] [2020-04-18 10:58:30,308 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:58:30,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:58:30,365 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 10:58:30,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99787220] [2020-04-18 10:58:30,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:58:30,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 10:58:30,366 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:58:30,367 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:58:30,373 INFO L259 McrAutomatonBuilder]: Finished intersection with 45 states and 77 transitions. [2020-04-18 10:58:30,373 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:58:30,459 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 11 times. [2020-04-18 10:58:30,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 10:58:30,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2020-04-18 10:58:30,459 INFO L87 Difference]: Start difference. First operand 646 states and 1548 transitions. Second operand 8 states. [2020-04-18 10:58:30,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:58:30,522 INFO L93 Difference]: Finished difference Result 646 states and 1548 transitions. [2020-04-18 10:58:30,522 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 1548 transitions. [2020-04-18 10:58:30,524 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:58:30,524 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [193264882] [2020-04-18 10:58:30,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:58:30,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 10:58:30,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [193264882] [2020-04-18 10:58:30,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-04-18 10:58:30,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:58:30,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 10:58:30,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2020-04-18 10:58:30,526 INFO L87 Difference]: Start difference. First operand 158 states and 339 transitions. Second operand 14 states. [2020-04-18 10:58:31,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:58:31,028 INFO L93 Difference]: Finished difference Result 134 states and 268 transitions. [2020-04-18 10:58:31,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-04-18 10:58:31,028 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2020-04-18 10:58:31,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:58:31,029 INFO L225 Difference]: With dead ends: 134 [2020-04-18 10:58:31,030 INFO L226 Difference]: Without dead ends: 95 [2020-04-18 10:58:31,031 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 110 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 620 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=389, Invalid=1773, Unknown=0, NotChecked=0, Total=2162 [2020-04-18 10:58:31,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-04-18 10:58:31,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-04-18 10:58:31,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-04-18 10:58:31,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 181 transitions. [2020-04-18 10:58:31,035 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 181 transitions. Word has length 17 [2020-04-18 10:58:31,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:58:31,035 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 181 transitions. [2020-04-18 10:58:31,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-04-18 10:58:31,036 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 181 transitions. [2020-04-18 10:58:31,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 10:58:31,036 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:58:31,036 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:58:31,036 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:58:31,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:58:31,037 INFO L82 PathProgramCache]: Analyzing trace with hash 461519417, now seen corresponding path program 1 times [2020-04-18 10:58:31,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:58:31,037 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [340820777] [2020-04-18 10:58:31,038 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:58:31,044 INFO L259 McrAutomatonBuilder]: Finished intersection with 370 states and 1174 transitions. [2020-04-18 10:58:31,047 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states. [2020-04-18 10:58:31,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 10:58:31,048 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:58:31,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:58:31,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1539514913, now seen corresponding path program 2 times [2020-04-18 10:58:31,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:58:31,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820647609] [2020-04-18 10:58:31,049 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:58:31,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:58:31,092 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 10:58:31,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820647609] [2020-04-18 10:58:31,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:58:31,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:58:31,093 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:58:31,095 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:58:31,106 INFO L259 McrAutomatonBuilder]: Finished intersection with 94 states and 176 transitions. [2020-04-18 10:58:31,106 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:58:31,120 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:58:31,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:58:31,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:58:31,121 INFO L87 Difference]: Start difference. First operand 370 states. Second operand 5 states. [2020-04-18 10:58:31,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:58:31,161 INFO L93 Difference]: Finished difference Result 550 states and 1738 transitions. [2020-04-18 10:58:31,162 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 1738 transitions. [2020-04-18 10:58:31,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 10:58:31,163 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:58:31,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:58:31,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1354015477, now seen corresponding path program 3 times [2020-04-18 10:58:31,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:58:31,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425126540] [2020-04-18 10:58:31,164 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:58:31,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:58:31,194 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 10:58:31,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425126540] [2020-04-18 10:58:31,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:58:31,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:58:31,195 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:58:31,197 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:58:31,202 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 50 transitions. [2020-04-18 10:58:31,202 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:58:31,210 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:58:31,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:58:31,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-04-18 10:58:31,211 INFO L87 Difference]: Start difference. First operand 550 states and 1738 transitions. Second operand 4 states. [2020-04-18 10:58:31,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:58:31,236 INFO L93 Difference]: Finished difference Result 910 states and 2754 transitions. [2020-04-18 10:58:31,236 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 2754 transitions. [2020-04-18 10:58:31,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 10:58:31,238 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:58:31,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:58:31,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1344876367, now seen corresponding path program 4 times [2020-04-18 10:58:31,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:58:31,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713376871] [2020-04-18 10:58:31,240 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:58:31,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:58:31,275 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 10:58:31,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713376871] [2020-04-18 10:58:31,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:58:31,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:58:31,276 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:58:31,277 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:58:31,283 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 48 transitions. [2020-04-18 10:58:31,283 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:58:31,377 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:58:31,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 10:58:31,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-04-18 10:58:31,378 INFO L87 Difference]: Start difference. First operand 910 states and 2754 transitions. Second operand 6 states. [2020-04-18 10:58:31,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:58:31,444 INFO L93 Difference]: Finished difference Result 1414 states and 4042 transitions. [2020-04-18 10:58:31,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1414 states and 4042 transitions. [2020-04-18 10:58:31,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 10:58:31,447 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 10:58:31,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:58:31,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1192691597, now seen corresponding path program 5 times [2020-04-18 10:58:31,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:58:31,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131161135] [2020-04-18 10:58:31,449 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:58:31,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:58:31,490 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 10:58:31,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131161135] [2020-04-18 10:58:31,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:58:31,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 10:58:31,491 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:58:31,494 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:58:31,499 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 48 transitions. [2020-04-18 10:58:31,499 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:58:31,516 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:58:31,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:58:31,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-04-18 10:58:31,517 INFO L87 Difference]: Start difference. First operand 1414 states and 4042 transitions. Second operand 5 states. [2020-04-18 10:58:31,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:58:31,579 INFO L93 Difference]: Finished difference Result 1696 states and 4699 transitions. [2020-04-18 10:58:31,580 INFO L276 IsEmpty]: Start isEmpty. Operand 1696 states and 4699 transitions. [2020-04-18 10:58:31,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 10:58:31,583 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 10:58:31,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:58:31,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1221860735, now seen corresponding path program 6 times [2020-04-18 10:58:31,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:58:31,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118306268] [2020-04-18 10:58:31,584 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:58:31,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:58:31,616 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 10:58:31,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118306268] [2020-04-18 10:58:31,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:58:31,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:58:31,617 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:58:31,618 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:58:31,624 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 61 transitions. [2020-04-18 10:58:31,624 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:58:31,674 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:58:31,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:58:31,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2020-04-18 10:58:31,675 INFO L87 Difference]: Start difference. First operand 1696 states and 4699 transitions. Second operand 5 states. [2020-04-18 10:58:31,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:58:31,747 INFO L93 Difference]: Finished difference Result 2041 states and 5296 transitions. [2020-04-18 10:58:31,747 INFO L276 IsEmpty]: Start isEmpty. Operand 2041 states and 5296 transitions. [2020-04-18 10:58:31,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 10:58:31,750 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 10:58:31,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:58:31,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1320022171, now seen corresponding path program 7 times [2020-04-18 10:58:31,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:58:31,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567976055] [2020-04-18 10:58:31,751 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:58:31,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:58:31,811 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 10:58:31,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567976055] [2020-04-18 10:58:31,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:58:31,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 10:58:31,812 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:58:31,813 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:58:31,818 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 55 transitions. [2020-04-18 10:58:31,819 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:58:31,841 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:58:31,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 10:58:31,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=556, Unknown=0, NotChecked=0, Total=650 [2020-04-18 10:58:31,842 INFO L87 Difference]: Start difference. First operand 2041 states and 5296 transitions. Second operand 6 states. [2020-04-18 10:58:31,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:58:31,935 INFO L93 Difference]: Finished difference Result 2091 states and 5344 transitions. [2020-04-18 10:58:31,935 INFO L276 IsEmpty]: Start isEmpty. Operand 2091 states and 5344 transitions. [2020-04-18 10:58:31,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 10:58:31,939 INFO L105 Mcr]: ---- MCR iteration 6 ---- [2020-04-18 10:58:31,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:58:31,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1319799301, now seen corresponding path program 8 times [2020-04-18 10:58:31,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:58:31,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290482264] [2020-04-18 10:58:31,942 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:58:31,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:58:31,997 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 10:58:31,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290482264] [2020-04-18 10:58:31,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:58:31,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 10:58:31,998 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:58:32,000 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:58:32,005 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 51 transitions. [2020-04-18 10:58:32,006 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:58:32,026 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 10:58:32,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 10:58:32,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=648, Unknown=0, NotChecked=0, Total=756 [2020-04-18 10:58:32,027 INFO L87 Difference]: Start difference. First operand 2091 states and 5344 transitions. Second operand 7 states. [2020-04-18 10:58:32,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:58:32,115 INFO L93 Difference]: Finished difference Result 2091 states and 5344 transitions. [2020-04-18 10:58:32,116 INFO L276 IsEmpty]: Start isEmpty. Operand 2091 states and 5344 transitions. [2020-04-18 10:58:32,119 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:58:32,120 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [340820777] [2020-04-18 10:58:32,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:58:32,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 10:58:32,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [340820777] [2020-04-18 10:58:32,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-04-18 10:58:32,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:58:32,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 10:58:32,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=697, Unknown=0, NotChecked=0, Total=812 [2020-04-18 10:58:32,124 INFO L87 Difference]: Start difference. First operand 95 states and 181 transitions. Second operand 15 states. [2020-04-18 10:58:32,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:58:32,711 INFO L93 Difference]: Finished difference Result 94 states and 179 transitions. [2020-04-18 10:58:32,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-04-18 10:58:32,711 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 19 [2020-04-18 10:58:32,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:58:32,711 INFO L225 Difference]: With dead ends: 94 [2020-04-18 10:58:32,712 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 10:58:32,713 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1033 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=456, Invalid=2966, Unknown=0, NotChecked=0, Total=3422 [2020-04-18 10:58:32,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 10:58:32,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 10:58:32,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 10:58:32,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 10:58:32,713 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-04-18 10:58:32,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:58:32,714 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 10:58:32,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-04-18 10:58:32,714 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 10:58:32,714 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:58:32,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 10:58:32 BasicIcfg [2020-04-18 10:58:32,718 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 10:58:32,721 INFO L168 Benchmark]: Toolchain (without parser) took 11469.27 ms. Allocated memory was 137.9 MB in the beginning and 383.3 MB in the end (delta: 245.4 MB). Free memory was 100.3 MB in the beginning and 91.5 MB in the end (delta: 8.8 MB). Peak memory consumption was 254.1 MB. Max. memory is 7.1 GB. [2020-04-18 10:58:32,721 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 137.9 MB. Free memory is still 120.7 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 10:58:32,722 INFO L168 Benchmark]: CACSL2BoogieTranslator took 755.73 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 98.5 MB in the beginning and 156.0 MB in the end (delta: -57.5 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-04-18 10:58:32,722 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.01 ms. Allocated memory is still 201.9 MB. Free memory was 156.0 MB in the beginning and 154.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 10:58:32,723 INFO L168 Benchmark]: Boogie Preprocessor took 27.08 ms. Allocated memory is still 201.9 MB. Free memory was 154.0 MB in the beginning and 152.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 10:58:32,723 INFO L168 Benchmark]: RCFGBuilder took 466.81 ms. Allocated memory is still 201.9 MB. Free memory was 152.0 MB in the beginning and 128.6 MB in the end (delta: 23.4 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2020-04-18 10:58:32,723 INFO L168 Benchmark]: TraceAbstraction took 10152.05 ms. Allocated memory was 201.9 MB in the beginning and 383.3 MB in the end (delta: 181.4 MB). Free memory was 128.6 MB in the beginning and 91.5 MB in the end (delta: 37.0 MB). Peak memory consumption was 218.4 MB. Max. memory is 7.1 GB. [2020-04-18 10:58:32,726 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 137.9 MB. Free memory is still 120.7 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 755.73 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 98.5 MB in the beginning and 156.0 MB in the end (delta: -57.5 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 47.01 ms. Allocated memory is still 201.9 MB. Free memory was 156.0 MB in the beginning and 154.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.08 ms. Allocated memory is still 201.9 MB. Free memory was 154.0 MB in the beginning and 152.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 466.81 ms. Allocated memory is still 201.9 MB. Free memory was 152.0 MB in the beginning and 128.6 MB in the end (delta: 23.4 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10152.05 ms. Allocated memory was 201.9 MB in the beginning and 383.3 MB in the end (delta: 181.4 MB). Free memory was 128.6 MB in the beginning and 91.5 MB in the end (delta: 37.0 MB). Peak memory consumption was 218.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.9s, 91 ProgramPointsBefore, 39 ProgramPointsAfterwards, 80 TransitionsBefore, 27 TransitionsAfterwards, 1822 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 953 VarBasedMoverChecksPositive, 43 VarBasedMoverChecksNegative, 32 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 0 MoverChecksTotal, 2895 CheckedPairsTotal, 62 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 5 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.0s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 315 SDtfs, 707 SDslu, 1024 SDs, 0 SdLazy, 711 SolverSat, 242 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 752 GetRequests, 519 SyntacticMatches, 2 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2987 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=850occurred 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: 0.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 112 StatesRemovedByMinimization, 2 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...