/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=HIGHLEXORDER --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_spec1_product44.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:23:51,316 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:23:51,320 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:23:51,368 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:23:51,369 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:23:51,379 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:23:51,381 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:23:51,385 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:23:51,388 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:23:51,392 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:23:51,393 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:23:51,394 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:23:51,394 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:23:51,397 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:23:51,400 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:23:51,402 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:23:51,403 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:23:51,404 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:23:51,406 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:23:51,415 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:23:51,418 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:23:51,419 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:23:51,420 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:23:51,421 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:23:51,424 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:23:51,424 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:23:51,424 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:23:51,428 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:23:51,428 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:23:51,431 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:23:51,431 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:23:51,432 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:23:51,432 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:23:51,433 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:23:51,435 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:23:51,435 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:23:51,436 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:23:51,436 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:23:51,436 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:23:51,437 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:23:51,439 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:23:51,440 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 22:23:51,486 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:23:51,487 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:23:51,489 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:23:51,489 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:23:51,489 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:23:51,489 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:23:51,490 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:23:51,490 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:23:51,490 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:23:51,491 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:23:51,492 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:23:51,492 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:23:51,492 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:23:51,493 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:23:51,493 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:23:51,493 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:23:51,493 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:23:51,494 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:23:51,494 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:23:51,494 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:23:51,494 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:23:51,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:23:51,495 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:23:51,495 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:23:51,495 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:23:51,495 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:23:51,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:23:51,496 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:23:51,496 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:23:51,496 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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;log-additional-information=true; [2020-09-24 22:23:51,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:23:51,978 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:23:51,985 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:23:51,987 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:23:51,988 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:23:51,989 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product44.cil.c [2020-09-24 22:23:52,076 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b7d46750e/6f9257f23a9b42048d4e18ea1a58f727/FLAGeb182df07 [2020-09-24 22:23:52,677 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:23:52,677 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product44.cil.c [2020-09-24 22:23:52,696 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b7d46750e/6f9257f23a9b42048d4e18ea1a58f727/FLAGeb182df07 [2020-09-24 22:23:52,968 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b7d46750e/6f9257f23a9b42048d4e18ea1a58f727 [2020-09-24 22:23:52,980 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:23:52,987 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:23:52,988 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:23:52,988 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:23:52,996 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:23:52,997 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:23:52" (1/1) ... [2020-09-24 22:23:53,002 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e0386e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:23:52, skipping insertion in model container [2020-09-24 22:23:53,002 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:23:52" (1/1) ... [2020-09-24 22:23:53,011 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:23:53,063 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:23:53,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:23:53,535 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:23:53,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:23:53,650 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:23:53,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:23:53 WrapperNode [2020-09-24 22:23:53,651 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:23:53,652 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:23:53,652 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:23:53,652 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:23:53,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:23:53" (1/1) ... [2020-09-24 22:23:53,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:23:53" (1/1) ... [2020-09-24 22:23:53,687 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:23:53" (1/1) ... [2020-09-24 22:23:53,688 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:23:53" (1/1) ... [2020-09-24 22:23:53,723 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:23:53" (1/1) ... [2020-09-24 22:23:53,734 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:23:53" (1/1) ... [2020-09-24 22:23:53,740 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:23:53" (1/1) ... [2020-09-24 22:23:53,747 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:23:53,748 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:23:53,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:23:53,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:23:53,750 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:23:53" (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 22:23:53,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:23:53,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:23:53,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 22:23:53,825 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 22:23:53,826 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 22:23:53,826 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 22:23:53,826 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 22:23:53,826 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 22:23:53,826 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 22:23:53,826 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 22:23:53,827 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 22:23:53,827 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 22:23:53,827 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 22:23:53,827 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 22:23:53,827 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-09-24 22:23:53,828 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 22:23:53,828 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 22:23:53,828 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 22:23:53,828 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 22:23:53,829 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 22:23:53,829 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-24 22:23:53,829 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-24 22:23:53,829 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-24 22:23:53,830 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 22:23:53,830 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 22:23:53,831 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 22:23:53,831 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 22:23:53,831 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 22:23:53,831 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 22:23:53,831 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-24 22:23:53,831 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-09-24 22:23:53,831 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 22:23:53,832 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 22:23:53,832 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 22:23:53,832 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 22:23:53,832 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 22:23:53,832 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 22:23:53,832 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 22:23:53,833 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 22:23:53,833 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:23:53,833 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:23:53,833 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 22:23:53,833 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 22:23:53,833 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 22:23:53,833 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 22:23:53,834 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 22:23:53,834 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 22:23:53,834 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 22:23:53,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 22:23:53,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 22:23:53,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 22:23:53,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 22:23:53,835 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 22:23:53,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 22:23:53,836 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 22:23:53,836 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 22:23:53,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 22:23:53,836 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 22:23:53,836 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 22:23:53,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 22:23:53,837 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 22:23:53,837 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 22:23:53,837 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 22:23:53,837 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-24 22:23:53,838 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-24 22:23:53,838 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 22:23:53,838 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 22:23:53,838 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 22:23:53,839 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 22:23:53,839 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 22:23:53,839 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 22:23:53,840 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-24 22:23:53,841 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 22:23:53,841 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 22:23:53,841 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 22:23:53,842 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 22:23:53,842 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-09-24 22:23:53,842 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 22:23:53,842 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 22:23:53,843 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-24 22:23:53,843 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-09-24 22:23:53,843 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 22:23:53,844 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 22:23:53,844 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 22:23:53,844 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 22:23:53,844 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 22:23:53,844 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 22:23:53,845 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 22:23:53,845 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 22:23:53,845 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 22:23:53,845 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:23:53,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:23:53,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 22:23:53,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:23:54,966 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:23:54,966 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 22:23:54,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:23:54 BoogieIcfgContainer [2020-09-24 22:23:54,974 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:23:54,975 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:23:54,975 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:23:54,979 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:23:54,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:23:52" (1/3) ... [2020-09-24 22:23:54,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6378c5bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:23:54, skipping insertion in model container [2020-09-24 22:23:54,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:23:53" (2/3) ... [2020-09-24 22:23:54,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6378c5bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:23:54, skipping insertion in model container [2020-09-24 22:23:54,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:23:54" (3/3) ... [2020-09-24 22:23:54,983 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product44.cil.c [2020-09-24 22:23:54,995 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:23:55,005 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:23:55,027 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:23:55,058 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:23:55,058 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:23:55,058 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:23:55,058 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:23:55,058 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:23:55,058 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:23:55,058 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:23:55,059 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:23:55,085 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states. [2020-09-24 22:23:55,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-24 22:23:55,102 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:23:55,104 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] [2020-09-24 22:23:55,104 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:23:55,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:23:55,111 INFO L82 PathProgramCache]: Analyzing trace with hash -382402386, now seen corresponding path program 1 times [2020-09-24 22:23:55,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:23:55,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1845144565] [2020-09-24 22:23:55,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:23:55,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:23:55,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:23:55,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:23:57,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:23:58,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:23:59,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:24:00,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:24:00,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-24 22:24:00,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 22:24:00,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-24 22:24:00,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:24:00,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:24:00,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-09-24 22:24:00,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 22:24:00,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-24 22:24:01,124 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 22:24:01,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:24:01,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:24:01,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:24:01,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:24:01,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 22:24:01,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:24:01,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-24 22:24:01,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:24:01,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:24:01,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:24:01,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:24:01,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:24:01,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 22:24:01,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:24:01,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:24:01,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:24:01,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:24:01,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:24:01,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:24:01,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:24:01,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:24:01,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:24:01,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:24:01,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:24:01,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 22:24:01,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:24:01,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:24:01,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:24:01,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:24:01,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:24:01,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:24:01,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:24:01,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:24:01,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:24:01,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:24:01,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:24:01,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 22:24:01,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:24:01,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:24:01,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:24:01,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:24:01,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:24:01,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:24:01,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:24:01,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:24:01,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:24:01,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:24:01,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:24:01,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 22:24:01,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:24:01,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:24:01,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:24:01,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:24:01,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:24:01,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:24:01,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:24:01,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:24:01,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:24:01,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:24:01,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:24:01,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-24 22:24:01,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:24:01,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:24:01,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:24:01,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:24:01,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:24:01,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:24:01,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:24:01,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:24:01,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:24:01,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:24:01,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:24:01,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-24 22:24:01,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:24:01,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:24:01,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:24:01,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:24:01,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:24:01,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 22:24:01,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:24:01,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:24:01,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:24:01,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:24:01,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:24:01,464 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 22:24:01,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1845144565] [2020-09-24 22:24:01,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:24:01,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 22:24:01,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107799331] [2020-09-24 22:24:01,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 22:24:01,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:24:01,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 22:24:01,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 22:24:01,496 INFO L87 Difference]: Start difference. First operand 308 states. Second operand 8 states. [2020-09-24 22:24:02,077 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 22:24:03,301 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 22:24:03,588 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 22:24:03,957 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 22:24:04,285 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 22:24:04,583 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 22:24:05,572 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 22:24:05,891 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 22:24:06,252 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 22:24:07,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:24:07,111 INFO L93 Difference]: Finished difference Result 595 states and 739 transitions. [2020-09-24 22:24:07,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 22:24:07,113 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 142 [2020-09-24 22:24:07,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:24:07,134 INFO L225 Difference]: With dead ends: 595 [2020-09-24 22:24:07,134 INFO L226 Difference]: Without dead ends: 398 [2020-09-24 22:24:07,146 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2020-09-24 22:24:07,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2020-09-24 22:24:07,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 353. [2020-09-24 22:24:07,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2020-09-24 22:24:07,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 403 transitions. [2020-09-24 22:24:07,279 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 403 transitions. Word has length 142 [2020-09-24 22:24:07,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:24:07,280 INFO L479 AbstractCegarLoop]: Abstraction has 353 states and 403 transitions. [2020-09-24 22:24:07,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 22:24:07,281 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 403 transitions. [2020-09-24 22:24:07,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-24 22:24:07,287 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:24:07,287 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:24:07,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:24:07,288 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:24:07,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:24:07,288 INFO L82 PathProgramCache]: Analyzing trace with hash 144004324, now seen corresponding path program 1 times [2020-09-24 22:24:07,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:24:07,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402166594] [2020-09-24 22:24:07,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:24:07,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:24:07,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:24:07,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:24:08,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:24:08,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:24:12,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:24:12,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-09-24 22:24:12,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 22:24:12,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 22:24:12,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:24:12,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 22:24:12,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-09-24 22:24:12,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-24 22:24:12,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:24:12,813 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 22:24:12,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:24:12,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:24:12,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:24:13,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:24:13,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 22:24:13,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:24:13,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-09-24 22:24:13,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:24:13,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:24:13,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:24:13,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:24:13,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:24:13,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 22:24:13,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:24:13,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:24:13,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:24:13,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:24:13,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:24:13,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:24:13,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:24:13,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:24:13,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:24:13,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:24:13,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:24:13,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 22:24:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:24:13,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:24:13,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:24:13,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:24:13,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:24:13,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:24:13,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:24:13,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:24:13,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:24:13,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:24:13,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:24:13,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 22:24:13,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:24:13,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:24:13,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:24:13,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:24:13,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:24:13,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:24:13,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:24:13,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:24:13,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:24:13,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:24:13,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:24:13,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 22:24:13,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:24:13,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:24:13,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:24:13,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:24:13,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:24:13,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:24:13,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:24:13,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:24:13,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:24:13,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:24:13,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:24:13,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-24 22:24:13,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:24:13,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:24:13,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:24:14,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:24:14,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-24 22:24:14,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:24:14,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 958 [2020-09-24 22:24:14,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:24:14,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:24:14,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 22:24:14,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:24:14,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:24:14,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:24:14,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:24:14,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:24:14,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:24:14,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 22:24:14,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:24:14,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 22:24:14,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:24:14,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:24:14,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:24:14,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 22:24:14,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:24:14,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:24:14,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:24:14,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:24:14,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:24:14,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:24:14,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:24:14,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:24:14,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:24:14,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:24:14,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:24:14,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:24:14,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 22:24:14,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 22:24:14,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:24:14,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:24:14,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:24:14,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 22:24:14,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:24:14,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 22:24:14,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:24:14,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:24:14,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-24 22:24:14,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:24:14,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:24:14,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 22:24:14,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:24:14,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:24:14,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:24:14,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 22:24:14,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:24:14,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:24:14,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:24:14,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:24:14,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:24:14,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:24:14,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:24:14,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 22:24:14,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:24:14,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:24:14,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:24:14,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:24:14,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:24:14,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:24:14,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:24:14,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:24:14,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:24:14,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:24:14,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:24:14,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-24 22:24:14,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:24:14,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:24:14,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:24:14,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 22:24:14,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:24:14,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:24:14,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:24:14,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:24:14,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:24:14,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:24:14,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:24:14,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-09-24 22:24:14,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:24:14,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:24:14,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:24:14,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:24:14,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:24:14,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 22:24:14,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:24:14,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:24:14,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:24:14,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:24:14,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:24:14,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-09-24 22:24:14,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:24:14,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:24:14,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:24:14,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:24:14,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:24:14,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:24:14,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:24:14,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:24:14,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 22:24:14,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:24:14,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:24:14,414 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 22:24:14,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1402166594] [2020-09-24 22:24:14,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:24:14,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-24 22:24:14,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465156562] [2020-09-24 22:24:14,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 22:24:14,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:24:14,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 22:24:14,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-09-24 22:24:14,419 INFO L87 Difference]: Start difference. First operand 353 states and 403 transitions. Second operand 14 states. [2020-09-24 22:24:14,874 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 22:24:15,940 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 22:24:16,318 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 22:24:16,711 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 22:24:17,133 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 22:24:17,479 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 22:24:18,033 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 22:24:18,411 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 22:24:18,748 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 22:24:19,116 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 22:24:19,416 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 22:24:19,717 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 22:24:20,020 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 22:24:20,380 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 22:24:20,828 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 22:24:21,295 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 22:24:21,609 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 22:24:21,924 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 22:24:22,253 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 22:24:22,591 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 22:24:22,912 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 22:24:24,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:24:24,727 INFO L93 Difference]: Finished difference Result 974 states and 1288 transitions. [2020-09-24 22:24:24,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-24 22:24:24,732 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 198 [2020-09-24 22:24:24,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:24:24,740 INFO L225 Difference]: With dead ends: 974 [2020-09-24 22:24:24,740 INFO L226 Difference]: Without dead ends: 686 [2020-09-24 22:24:24,745 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=210, Invalid=1050, Unknown=0, NotChecked=0, Total=1260 [2020-09-24 22:24:24,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2020-09-24 22:24:24,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 571. [2020-09-24 22:24:24,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-09-24 22:24:24,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 655 transitions. [2020-09-24 22:24:24,849 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 655 transitions. Word has length 198 [2020-09-24 22:24:24,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:24:24,849 INFO L479 AbstractCegarLoop]: Abstraction has 571 states and 655 transitions. [2020-09-24 22:24:24,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 22:24:24,850 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 655 transitions. [2020-09-24 22:24:24,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-09-24 22:24:24,854 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:24:24,854 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:24:24,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 22:24:24,855 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:24:24,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:24:24,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1226108971, now seen corresponding path program 1 times [2020-09-24 22:24:24,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:24:24,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777018126] [2020-09-24 22:24:24,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:24:24,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:24:24,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:24:25,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:24:29,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:24:29,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:24:29,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-09-24 22:24:29,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:24:29,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-09-24 22:24:29,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:24:29,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 22:24:29,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 206 [2020-09-24 22:24:29,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-24 22:24:29,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:24:30,293 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 22:24:30,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:24:30,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:24:30,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:24:30,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:24:30,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 22:24:30,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:24:30,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-24 22:24:30,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:24:30,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:24:30,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:24:30,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:24:30,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:24:30,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 22:24:30,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:24:30,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:24:30,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:24:30,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:24:30,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:24:30,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:24:30,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:24:30,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:24:30,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:24:30,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:24:30,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:24:30,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 22:24:30,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:24:30,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:24:30,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:24:30,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:24:30,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:24:30,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:24:30,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:24:30,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:24:30,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:24:30,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:24:30,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:24:30,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 22:24:30,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:24:30,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:24:30,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:24:30,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:24:30,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:24:30,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:24:30,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:24:30,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:24:30,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:24:30,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:24:30,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:24:30,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 22:24:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:24:30,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:24:30,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:24:30,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:24:30,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:24:30,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:24:30,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:24:30,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:24:30,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:24:30,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:24:30,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:24:30,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-24 22:24:30,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:24:30,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:24:30,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:24:30,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:24:30,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:24:30,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:24:30,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:24:30,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:24:30,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:24:30,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:24:30,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:24:30,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-24 22:24:30,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:24:30,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:24:30,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:24:30,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 22:24:30,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:24:30,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:24:30,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:24:30,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:24:30,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:24:30,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:24:30,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:24:30,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-24 22:24:30,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:24:30,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:24:30,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:24:31,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:24:31,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-24 22:24:31,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:24:31,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 686 [2020-09-24 22:24:31,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:24:31,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:24:31,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 22:24:31,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:24:31,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:24:31,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:24:31,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:24:31,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:24:31,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:24:31,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 22:24:31,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:24:31,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 22:24:31,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:24:31,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:24:31,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 22:24:31,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:24:31,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:24:31,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:24:31,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:24:31,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:24:31,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:24:31,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:24:31,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:24:31,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:24:31,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:24:31,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:24:31,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:24:31,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:24:31,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:24:31,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 22:24:31,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:24:31,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:24:31,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:24:31,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 22:24:31,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:24:31,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 22:24:31,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:24:31,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:24:31,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-24 22:24:31,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:24:31,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:24:31,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 22:24:31,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:24:31,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:24:31,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:24:31,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 22:24:31,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:24:31,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:24:31,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:24:31,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:24:31,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:24:31,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:24:31,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:24:31,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 22:24:31,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:24:31,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:24:31,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:24:31,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:24:31,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:24:31,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:24:31,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:24:31,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:24:31,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:24:31,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:24:31,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:24:31,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-24 22:24:31,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:24:31,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:24:31,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:24:31,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 22:24:31,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:24:31,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:24:31,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:24:31,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:24:31,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:24:31,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:24:31,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:24:31,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-09-24 22:24:31,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:24:31,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:24:31,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:24:31,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:24:31,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:24:31,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:24:31,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:24:31,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:24:31,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:24:31,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:24:31,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:24:31,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-09-24 22:24:31,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:24:31,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:24:31,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:24:31,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:24:31,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:24:31,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:24:31,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:24:31,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:24:31,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 22:24:31,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:24:31,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:24:31,496 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 22:24:31,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1777018126] [2020-09-24 22:24:31,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:24:31,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-09-24 22:24:31,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782474050] [2020-09-24 22:24:31,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 22:24:31,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:24:31,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 22:24:31,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-09-24 22:24:31,499 INFO L87 Difference]: Start difference. First operand 571 states and 655 transitions. Second operand 15 states. [2020-09-24 22:24:32,055 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 22:24:33,365 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 22:24:33,729 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 22:24:34,087 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 22:24:34,414 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 22:24:34,711 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 22:24:35,039 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 22:24:35,381 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 22:24:35,697 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 22:24:36,002 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 22:24:36,374 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 22:24:36,718 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 22:24:37,044 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 22:24:37,340 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 22:24:37,645 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 22:24:37,981 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 22:24:38,341 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 22:24:38,719 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 22:24:39,027 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 22:24:42,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:24:42,173 INFO L93 Difference]: Finished difference Result 1444 states and 1902 transitions. [2020-09-24 22:24:42,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-09-24 22:24:42,173 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 216 [2020-09-24 22:24:42,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:24:42,182 INFO L225 Difference]: With dead ends: 1444 [2020-09-24 22:24:42,182 INFO L226 Difference]: Without dead ends: 983 [2020-09-24 22:24:42,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=442, Invalid=1538, Unknown=0, NotChecked=0, Total=1980 [2020-09-24 22:24:42,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2020-09-24 22:24:42,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 583. [2020-09-24 22:24:42,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 583 states. [2020-09-24 22:24:42,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 667 transitions. [2020-09-24 22:24:42,282 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 667 transitions. Word has length 216 [2020-09-24 22:24:42,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:24:42,283 INFO L479 AbstractCegarLoop]: Abstraction has 583 states and 667 transitions. [2020-09-24 22:24:42,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 22:24:42,284 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 667 transitions. [2020-09-24 22:24:42,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-09-24 22:24:42,288 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:24:42,288 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:24:42,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 22:24:42,288 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:24:42,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:24:42,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1898830414, now seen corresponding path program 1 times [2020-09-24 22:24:42,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:24:42,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1431698511] [2020-09-24 22:24:42,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:24:42,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:24:42,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:24:42,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking...