/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/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product02.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:09:00,845 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:09:00,848 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:09:00,876 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:09:00,876 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:09:00,878 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:09:00,879 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:09:00,881 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:09:00,883 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:09:00,884 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:09:00,886 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:09:00,887 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:09:00,887 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:09:00,888 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:09:00,890 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:09:00,891 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:09:00,892 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:09:00,893 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:09:00,895 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:09:00,898 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:09:00,900 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:09:00,901 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:09:00,902 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:09:00,904 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:09:00,907 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:09:00,907 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:09:00,907 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:09:00,908 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:09:00,909 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:09:00,910 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:09:00,910 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:09:00,911 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:09:00,912 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:09:00,914 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:09:00,915 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:09:00,915 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:09:00,916 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:09:00,916 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:09:00,916 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:09:00,917 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:09:00,918 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:09:00,919 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 20:09:00,947 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:09:00,948 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:09:00,949 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:09:00,949 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:09:00,949 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:09:00,950 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:09:00,950 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:09:00,950 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:09:00,950 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:09:00,950 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:09:00,951 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:09:00,951 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:09:00,951 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:09:00,951 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:09:00,951 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:09:00,952 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:09:00,952 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:09:00,952 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:09:00,952 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:09:00,952 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:09:00,953 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:09:00,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:09:00,953 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:09:00,953 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:09:00,954 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:09:00,954 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:09:00,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:09:00,954 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:09:00,954 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:09:00,955 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; [2020-09-24 20:09:01,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:09:01,464 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:09:01,469 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:09:01,472 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:09:01,473 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:09:01,474 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product02.cil.c [2020-09-24 20:09:01,554 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd80fcf36/f90691555eb84990b559485843088b79/FLAGf7516abe3 [2020-09-24 20:09:02,217 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:09:02,219 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product02.cil.c [2020-09-24 20:09:02,232 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd80fcf36/f90691555eb84990b559485843088b79/FLAGf7516abe3 [2020-09-24 20:09:02,416 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd80fcf36/f90691555eb84990b559485843088b79 [2020-09-24 20:09:02,432 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:09:02,437 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:09:02,439 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:09:02,439 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:09:02,443 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:09:02,445 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:09:02" (1/1) ... [2020-09-24 20:09:02,449 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@177c5926 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:09:02, skipping insertion in model container [2020-09-24 20:09:02,450 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:09:02" (1/1) ... [2020-09-24 20:09:02,459 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:09:02,533 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:09:03,044 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:09:03,067 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:09:03,147 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:09:03,191 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:09:03,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:09:03 WrapperNode [2020-09-24 20:09:03,193 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:09:03,194 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:09:03,194 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:09:03,194 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:09:03,208 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:09:03" (1/1) ... [2020-09-24 20:09:03,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:09:03" (1/1) ... [2020-09-24 20:09:03,240 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:09:03" (1/1) ... [2020-09-24 20:09:03,241 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:09:03" (1/1) ... [2020-09-24 20:09:03,298 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:09:03" (1/1) ... [2020-09-24 20:09:03,309 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:09:03" (1/1) ... [2020-09-24 20:09:03,313 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:09:03" (1/1) ... [2020-09-24 20:09:03,322 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:09:03,322 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:09:03,322 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:09:03,323 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:09:03,324 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:09:03" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-24 20:09:03,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:09:03,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:09:03,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 20:09:03,443 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 20:09:03,444 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 20:09:03,444 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 20:09:03,444 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 20:09:03,444 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 20:09:03,447 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 20:09:03,448 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 20:09:03,448 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 20:09:03,449 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 20:09:03,449 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 20:09:03,449 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-09-24 20:09:03,449 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-09-24 20:09:03,451 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 20:09:03,451 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 20:09:03,451 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 20:09:03,452 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 20:09:03,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 20:09:03,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 20:09:03,453 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 20:09:03,454 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 20:09:03,454 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 20:09:03,456 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 20:09:03,456 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:09:03,456 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 20:09:03,456 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 20:09:03,457 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 20:09:03,457 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 20:09:03,457 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 20:09:03,457 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 20:09:03,457 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 20:09:03,457 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-24 20:09:03,458 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 20:09:03,458 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 20:09:03,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:09:03,459 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:09:03,459 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 20:09:03,459 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 20:09:03,463 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 20:09:03,463 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 20:09:03,463 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 20:09:03,463 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 20:09:03,464 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 20:09:03,465 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 20:09:03,465 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 20:09:03,466 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 20:09:03,467 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 20:09:03,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 20:09:03,468 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 20:09:03,468 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 20:09:03,468 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-09-24 20:09:03,469 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-09-24 20:09:03,469 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 20:09:03,469 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 20:09:03,469 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 20:09:03,470 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 20:09:03,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 20:09:03,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 20:09:03,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 20:09:03,470 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 20:09:03,470 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 20:09:03,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 20:09:03,471 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 20:09:03,472 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 20:09:03,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 20:09:03,472 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 20:09:03,472 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 20:09:03,473 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 20:09:03,473 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 20:09:03,474 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 20:09:03,476 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 20:09:03,476 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 20:09:03,476 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 20:09:03,476 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 20:09:03,476 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 20:09:03,476 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:09:03,477 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 20:09:03,477 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 20:09:03,477 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-24 20:09:03,477 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 20:09:03,477 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 20:09:03,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:09:03,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 20:09:03,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:09:04,644 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:09:04,645 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 20:09:04,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:09:04 BoogieIcfgContainer [2020-09-24 20:09:04,652 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:09:04,653 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:09:04,654 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:09:04,657 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:09:04,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:09:02" (1/3) ... [2020-09-24 20:09:04,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a148788 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:09:04, skipping insertion in model container [2020-09-24 20:09:04,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:09:03" (2/3) ... [2020-09-24 20:09:04,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a148788 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:09:04, skipping insertion in model container [2020-09-24 20:09:04,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:09:04" (3/3) ... [2020-09-24 20:09:04,662 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product02.cil.c [2020-09-24 20:09:04,673 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:09:04,683 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:09:04,703 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:09:04,737 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:09:04,738 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:09:04,738 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:09:04,738 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:09:04,738 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:09:04,738 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:09:04,739 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:09:04,739 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:09:04,766 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states. [2020-09-24 20:09:04,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-24 20:09:04,783 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:09:04,784 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:09:04,785 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:09:04,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:09:04,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1973614371, now seen corresponding path program 1 times [2020-09-24 20:09:04,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:09:04,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316378225] [2020-09-24 20:09:04,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:09:05,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:09:05,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:09:05,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:09:06,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:09:06,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:09:08,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:09:09,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:09:10,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:09:10,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-24 20:09:10,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 20:09:10,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-09-24 20:09:10,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:09:10,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:09:10,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-24 20:09:10,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-24 20:09:10,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 20:09:10,736 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 20:09:10,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:09:10,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:09:10,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:09:11,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:09:11,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-24 20:09:11,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:09:11,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 322 [2020-09-24 20:09:11,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:09:11,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:09:11,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:09:11,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 20:09:11,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:09:11,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 20:09:11,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:09:11,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:09:11,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:09:11,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:09:11,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:09:11,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 20:09:11,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:09:11,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:09:11,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:09:11,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:09:11,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:09:11,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 20:09:11,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:09:11,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:09:11,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:09:11,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:09:11,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:09:11,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:09:11,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:09:11,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:09:11,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:09:11,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:09:11,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:09:11,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 20:09:11,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:09:11,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:09:11,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:09:11,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:09:11,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:09:11,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 20:09:11,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:09:11,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:09:11,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:09:11,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:09:11,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:09:11,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 20:09:11,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:09:11,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:09:11,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:09:11,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:09:11,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:09:11,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 20:09:11,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:09:11,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:09:11,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:09:11,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:09:11,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:09:11,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 20:09:11,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:09:11,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:09:11,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:09:11,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 20:09:11,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:09:11,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 20:09:11,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:09:11,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:09:11,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:09:11,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 20:09:11,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:09:11,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-24 20:09:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:09:11,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:09:11,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:09:11,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:09:11,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:09:11,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 20:09:11,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:09:11,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:09:11,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:09:11,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:09:11,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:09:11,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-24 20:09:11,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:09:11,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:09:11,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:09:11,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:09:11,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:09:11,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:09:11,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:09:11,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:09:11,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 20:09:11,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:09:11,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:09:11,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:09:11,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316378225] [2020-09-24 20:09:11,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:09:11,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 20:09:11,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567797039] [2020-09-24 20:09:11,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 20:09:11,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:09:11,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 20:09:11,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:09:11,568 INFO L87 Difference]: Start difference. First operand 260 states. Second operand 9 states. [2020-09-24 20:09:12,224 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 20:09:13,313 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 20:09:13,708 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-24 20:09:14,081 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 20:09:14,492 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-09-24 20:09:14,843 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-24 20:09:15,461 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 20:09:15,784 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 20:09:16,191 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 20:09:16,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:09:16,842 INFO L93 Difference]: Finished difference Result 467 states and 574 transitions. [2020-09-24 20:09:16,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 20:09:16,846 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 148 [2020-09-24 20:09:16,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:09:16,866 INFO L225 Difference]: With dead ends: 467 [2020-09-24 20:09:16,866 INFO L226 Difference]: Without dead ends: 326 [2020-09-24 20:09:16,872 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2020-09-24 20:09:16,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-09-24 20:09:16,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 263. [2020-09-24 20:09:16,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-09-24 20:09:16,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 286 transitions. [2020-09-24 20:09:16,990 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 286 transitions. Word has length 148 [2020-09-24 20:09:16,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:09:16,991 INFO L479 AbstractCegarLoop]: Abstraction has 263 states and 286 transitions. [2020-09-24 20:09:16,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 20:09:16,991 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 286 transitions. [2020-09-24 20:09:16,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-24 20:09:16,996 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:09:16,997 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:09:16,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:09:16,997 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:09:16,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:09:16,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1104852806, now seen corresponding path program 1 times [2020-09-24 20:09:16,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:09:16,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1621058796] [2020-09-24 20:09:16,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:09:17,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:09:17,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:09:17,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:09:17,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:09:18,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:09:22,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:09:22,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-24 20:09:22,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:09:22,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-09-24 20:09:22,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:09:22,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:09:22,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-09-24 20:09:22,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 20:09:22,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:09:22,380 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 20:09:22,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:09:22,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:09:22,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:09:22,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:09:22,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-24 20:09:22,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:09:22,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-24 20:09:22,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:09:22,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:09:22,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:09:22,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:09:22,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:09:22,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 20:09:22,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:09:22,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:09:22,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:09:22,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:09:22,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:09:22,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:09:22,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:09:22,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:09:22,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:09:22,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:09:22,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:09:22,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 20:09:22,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:09:22,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:09:22,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:09:22,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:09:22,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:09:22,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:09:22,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:09:22,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:09:22,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:09:22,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:09:22,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:09:22,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 20:09:22,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:09:22,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:09:22,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:09:22,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:09:22,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:09:22,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:09:22,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:09:22,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:09:22,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:09:22,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:09:22,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:09:22,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 20:09:22,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:09:22,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:09:22,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:09:22,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:09:22,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:09:22,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:09:22,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:09:22,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:09:22,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:09:22,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:09:22,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:09:22,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 20:09:22,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:09:22,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:09:22,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:09:22,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 20:09:22,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:09:22,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:09:22,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:09:22,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:09:22,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:09:22,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 20:09:22,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:09:22,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-24 20:09:22,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:09:22,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:09:22,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:09:22,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:09:22,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:09:22,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 20:09:22,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:09:22,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:09:22,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:09:22,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:09:22,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:09:22,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-24 20:09:22,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:09:22,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:09:22,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:09:22,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 20:09:22,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:09:22,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:09:22,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:09:22,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:09:22,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:09:22,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 20:09:22,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:09:22,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-24 20:09:22,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:09:22,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:09:22,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:09:22,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:09:22,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:09:22,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:09:22,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:09:22,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:09:22,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:09:22,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:09:22,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 20:09:22,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-09-24 20:09:22,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:09:22,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:09:22,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:09:22,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:09:22,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:09:22,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:09:22,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:09:22,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:09:22,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:09:22,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:09:22,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:09:22,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:09:22,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1621058796] [2020-09-24 20:09:22,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:09:22,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 20:09:22,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463547556] [2020-09-24 20:09:22,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 20:09:22,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:09:22,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 20:09:22,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 20:09:22,718 INFO L87 Difference]: Start difference. First operand 263 states and 286 transitions. Second operand 7 states. [2020-09-24 20:09:23,345 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 20:09:25,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:09:25,394 INFO L93 Difference]: Finished difference Result 673 states and 858 transitions. [2020-09-24 20:09:25,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 20:09:25,395 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 167 [2020-09-24 20:09:25,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:09:25,407 INFO L225 Difference]: With dead ends: 673 [2020-09-24 20:09:25,407 INFO L226 Difference]: Without dead ends: 670 [2020-09-24 20:09:25,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2020-09-24 20:09:25,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-09-24 20:09:25,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 353. [2020-09-24 20:09:25,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2020-09-24 20:09:25,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 396 transitions. [2020-09-24 20:09:25,504 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 396 transitions. Word has length 167 [2020-09-24 20:09:25,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:09:25,505 INFO L479 AbstractCegarLoop]: Abstraction has 353 states and 396 transitions. [2020-09-24 20:09:25,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 20:09:25,505 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 396 transitions. [2020-09-24 20:09:25,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-09-24 20:09:25,509 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:09:25,510 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:09:25,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:09:25,510 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:09:25,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:09:25,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1809537240, now seen corresponding path program 1 times [2020-09-24 20:09:25,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:09:25,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [961401250] [2020-09-24 20:09:25,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:09:25,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:09:25,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:09:25,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:09:25,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:09:26,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:09:26,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:09:27,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:09:27,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:09:30,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:09:30,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:09:30,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-09-24 20:09:30,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 20:09:30,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-09-24 20:09:30,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:09:30,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:09:30,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-09-24 20:09:30,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-09-24 20:09:30,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:09:30,892 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 20:09:30,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:09:30,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:09:30,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:09:31,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:09:31,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-24 20:09:31,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:09:31,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-09-24 20:09:31,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:09:31,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:09:31,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:09:31,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 20:09:31,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:09:31,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 20:09:31,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:09:31,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:09:31,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:09:31,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:09:31,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:09:31,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:09:31,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:09:31,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:09:31,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:09:31,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:09:31,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:09:31,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 20:09:31,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:09:31,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:09:31,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:09:31,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:09:31,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:09:31,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:09:31,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:09:31,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:09:31,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:09:31,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:09:31,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:09:31,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 20:09:31,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:09:31,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:09:31,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:09:31,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:09:31,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:09:31,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 20:09:31,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:09:31,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:09:31,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:09:31,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:09:31,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:09:31,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 20:09:31,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:09:31,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:09:31,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:09:31,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:09:31,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:09:31,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:09:31,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:09:31,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:09:31,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:09:31,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:09:31,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:09:31,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 20:09:31,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:09:31,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:09:31,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:09:31,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 20:09:31,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:09:31,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:09:31,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:09:31,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:09:31,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:09:31,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 20:09:31,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:09:31,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-24 20:09:31,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:09:31,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:09:31,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:09:31,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:09:31,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:09:31,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:09:31,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:09:31,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:09:31,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:09:31,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:09:31,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:09:31,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-24 20:09:31,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:09:31,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:09:31,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:09:31,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 20:09:31,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:09:31,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:09:31,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:09:31,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:09:31,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:09:31,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 20:09:31,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:09:31,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-09-24 20:09:31,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:09:31,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:09:31,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:09:31,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:09:31,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 20:09:31,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:09:31,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-24 20:09:31,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:09:31,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:09:31,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:09:31,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 20:09:31,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:09:31,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:09:31,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:09:31,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:09:31,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:09:31,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 20:09:31,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:09:31,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-24 20:09:31,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:09:31,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:09:31,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 20:09:31,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 20:09:31,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:09:31,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:09:31,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:09:31,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:09:31,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:09:31,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:09:31,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:09:31,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:09:31,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:09:31,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:09:31,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:09:31,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:09:31,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:09:31,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:09:31,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:09:31,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:09:31,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:09:31,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:09:31,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:09:31,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:09:31,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:09:31,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:09:31,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:09:31,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:09:31,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:09:31,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-09-24 20:09:31,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:09:31,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:09:31,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:09:31,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:09:31,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:09:31,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:09:31,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:09:31,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:09:31,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 20:09:31,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:09:31,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:09:31,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-09-24 20:09:31,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:09:31,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:09:31,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:09:31,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:09:31,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:09:31,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:09:31,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:09:31,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:09:31,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 20:09:31,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:09:31,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:09:31,820 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 20:09:31,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [961401250] [2020-09-24 20:09:31,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:09:31,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 20:09:31,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511681939] [2020-09-24 20:09:31,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 20:09:31,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:09:31,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 20:09:31,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-09-24 20:09:31,825 INFO L87 Difference]: Start difference. First operand 353 states and 396 transitions. Second operand 13 states. [2020-09-24 20:09:32,585 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 20:09:33,804 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 20:09:34,121 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 20:09:34,806 WARN L193 SmtUtils]: Spent 578.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 191 [2020-09-24 20:09:35,329 WARN L193 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 193 [2020-09-24 20:09:35,886 WARN L193 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 191 [2020-09-24 20:09:36,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:09:36,594 INFO L93 Difference]: Finished difference Result 642 states and 796 transitions. [2020-09-24 20:09:36,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-24 20:09:36,594 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 204 [2020-09-24 20:09:36,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:09:36,596 INFO L225 Difference]: With dead ends: 642 [2020-09-24 20:09:36,596 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 20:09:36,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=278, Invalid=778, Unknown=0, NotChecked=0, Total=1056 [2020-09-24 20:09:36,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 20:09:36,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 20:09:36,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 20:09:36,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 20:09:36,601 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 204 [2020-09-24 20:09:36,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:09:36,602 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 20:09:36,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 20:09:36,602 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 20:09:36,602 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 20:09:36,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:09:36,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 20:09:36,864 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 20:09:37,062 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 20:09:37,256 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 20:09:37,448 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 20:09:37,629 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 20:09:38,132 WARN L193 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 202 [2020-09-24 20:09:38,306 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 20:09:38,742 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 103 [2020-09-24 20:09:38,905 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 20:09:39,270 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 192 [2020-09-24 20:09:39,431 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 20:09:39,589 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 20:09:39,747 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 20:09:39,901 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 20:09:40,074 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 20:09:40,241 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 20:09:40,416 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 20:09:40,582 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 20:09:40,772 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 20:09:41,107 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 192 [2020-09-24 20:09:41,444 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 192 [2020-09-24 20:09:41,783 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 192 [2020-09-24 20:09:41,940 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 20:09:42,274 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 192 [2020-09-24 20:09:42,609 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 192 [2020-09-24 20:09:42,772 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 20:09:42,930 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 20:09:43,264 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 192 [2020-09-24 20:09:43,422 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 20:09:43,569 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 20:09:43,976 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 107 [2020-09-24 20:09:44,316 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 192 [2020-09-24 20:09:44,478 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 20:09:44,690 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 8 [2020-09-24 20:09:44,843 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 20:09:45,179 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 192 [2020-09-24 20:09:45,337 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 20:09:45,494 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 20:09:45,646 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 20:09:45,804 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 20:09:46,141 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 192 [2020-09-24 20:09:46,298 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 20:09:46,455 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 20:09:46,789 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 192 [2020-09-24 20:09:47,125 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 192 [2020-09-24 20:09:47,458 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 192 [2020-09-24 20:09:47,793 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 192 [2020-09-24 20:09:47,950 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 20:09:48,284 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 192 [2020-09-24 20:09:48,442 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 20:09:48,775 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 192 [2020-09-24 20:09:48,932 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 20:09:49,099 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 20:09:49,256 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 20:09:49,480 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 8 [2020-09-24 20:09:49,653 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 20:09:49,810 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 20:09:49,977 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 20:09:50,144 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 20:09:50,313 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 20:09:50,480 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 20:09:50,646 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 20:09:50,805 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 20:09:50,958 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 20:09:51,113 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 20:09:51,299 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 20:09:51,634 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 192 [2020-09-24 20:09:51,802 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 20:09:51,969 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 20:09:52,433 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 193 [2020-09-24 20:09:52,699 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 192 [2020-09-24 20:09:52,963 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 192 [2020-09-24 20:09:53,232 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 192 [2020-09-24 20:09:53,691 WARN L193 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 193 [2020-09-24 20:09:53,959 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 192 [2020-09-24 20:09:54,225 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 192 [2020-09-24 20:09:54,686 WARN L193 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 193 [2020-09-24 20:09:55,153 WARN L193 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 193 [2020-09-24 20:09:55,609 WARN L193 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 193