/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=LOWLEXORDER --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_spec4_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:24:36,786 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:24:36,791 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:24:36,836 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:24:36,837 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:24:36,848 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:24:36,850 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:24:36,854 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:24:36,856 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:24:36,859 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:24:36,860 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:24:36,862 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:24:36,862 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:24:36,865 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:24:36,868 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:24:36,870 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:24:36,871 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:24:36,873 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:24:36,874 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:24:36,884 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:24:36,889 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:24:36,890 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:24:36,891 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:24:36,892 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:24:36,895 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:24:36,896 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:24:36,896 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:24:36,900 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:24:36,900 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:24:36,901 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:24:36,901 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:24:36,902 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:24:36,905 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:24:36,906 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:24:36,907 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:24:36,908 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:24:36,909 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:24:36,909 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:24:36,909 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:24:36,910 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:24:36,912 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:24:36,913 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 21:24:36,960 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:24:36,960 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:24:36,962 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:24:36,963 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:24:36,963 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:24:36,963 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:24:36,964 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:24:36,964 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:24:36,964 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:24:36,964 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:24:36,965 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:24:36,966 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:24:36,966 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:24:36,966 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:24:36,967 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:24:36,967 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:24:36,967 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:24:36,967 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:24:36,968 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:24:36,968 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:24:36,968 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:24:36,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:24:36,968 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:24:36,969 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:24:36,969 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:24:36,969 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:24:36,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:24:36,969 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:24:36,970 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:24:36,970 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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:24:37,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:24:37,429 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:24:37,434 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:24:37,436 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:24:37,436 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:24:37,438 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product35.cil.c [2020-09-24 21:24:37,532 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d3eb048da/feb7b5ee37a14fee9f1b6e230913bc03/FLAG3a288ab8b [2020-09-24 21:24:38,164 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:24:38,165 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product35.cil.c [2020-09-24 21:24:38,178 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d3eb048da/feb7b5ee37a14fee9f1b6e230913bc03/FLAG3a288ab8b [2020-09-24 21:24:38,418 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d3eb048da/feb7b5ee37a14fee9f1b6e230913bc03 [2020-09-24 21:24:38,432 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:24:38,439 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:24:38,441 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:24:38,442 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:24:38,446 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:24:38,447 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:24:38" (1/1) ... [2020-09-24 21:24:38,453 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11967da3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:24:38, skipping insertion in model container [2020-09-24 21:24:38,454 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:24:38" (1/1) ... [2020-09-24 21:24:38,464 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:24:38,516 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:24:38,998 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:24:39,014 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:24:39,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:24:39,170 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:24:39,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:24:39 WrapperNode [2020-09-24 21:24:39,171 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:24:39,172 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:24:39,172 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:24:39,172 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:24:39,188 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:24:39" (1/1) ... [2020-09-24 21:24:39,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:24:39" (1/1) ... [2020-09-24 21:24:39,210 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:24:39" (1/1) ... [2020-09-24 21:24:39,211 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:24:39" (1/1) ... [2020-09-24 21:24:39,245 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:24:39" (1/1) ... [2020-09-24 21:24:39,257 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:24:39" (1/1) ... [2020-09-24 21:24:39,262 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:24:39" (1/1) ... [2020-09-24 21:24:39,270 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:24:39,271 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:24:39,271 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:24:39,271 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:24:39,273 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:24:39" (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 21:24:39,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:24:39,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:24:39,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 21:24:39,377 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 21:24:39,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-09-24 21:24:39,377 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 21:24:39,377 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 21:24:39,377 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 21:24:39,378 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 21:24:39,379 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 21:24:39,379 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 21:24:39,379 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 21:24:39,379 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 21:24:39,379 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-24 21:24:39,379 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-24 21:24:39,380 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 21:24:39,381 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 21:24:39,381 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 21:24:39,381 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 21:24:39,381 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:24:39,382 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 21:24:39,382 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 21:24:39,382 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 21:24:39,382 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 21:24:39,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 21:24:39,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 21:24:39,384 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 21:24:39,384 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 21:24:39,384 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 21:24:39,384 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 21:24:39,384 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 21:24:39,384 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 21:24:39,384 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 21:24:39,385 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 21:24:39,385 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 21:24:39,385 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 21:24:39,385 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 21:24:39,385 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-24 21:24:39,385 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:24:39,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:24:39,386 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 21:24:39,386 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 21:24:39,386 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 21:24:39,386 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-24 21:24:39,386 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 21:24:39,387 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 21:24:39,387 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 21:24:39,387 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 21:24:39,387 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 21:24:39,387 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 21:24:39,388 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-09-24 21:24:39,388 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 21:24:39,388 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 21:24:39,388 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 21:24:39,388 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-24 21:24:39,388 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 21:24:39,389 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 21:24:39,389 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 21:24:39,389 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 21:24:39,389 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 21:24:39,389 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-24 21:24:39,389 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 21:24:39,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 21:24:39,390 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 21:24:39,390 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 21:24:39,390 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 21:24:39,390 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 21:24:39,390 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 21:24:39,390 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 21:24:39,391 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:24:39,391 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 21:24:39,391 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 21:24:39,391 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 21:24:39,391 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 21:24:39,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 21:24:39,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 21:24:39,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 21:24:39,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 21:24:39,392 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 21:24:39,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 21:24:39,392 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 21:24:39,393 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 21:24:39,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 21:24:39,393 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 21:24:39,393 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 21:24:39,393 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 21:24:39,393 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 21:24:39,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:24:39,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 21:24:39,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:24:40,585 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:24:40,585 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 21:24:40,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:24:40 BoogieIcfgContainer [2020-09-24 21:24:40,593 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:24:40,594 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:24:40,594 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:24:40,598 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:24:40,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:24:38" (1/3) ... [2020-09-24 21:24:40,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48cc3e65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:24:40, skipping insertion in model container [2020-09-24 21:24:40,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:24:39" (2/3) ... [2020-09-24 21:24:40,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48cc3e65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:24:40, skipping insertion in model container [2020-09-24 21:24:40,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:24:40" (3/3) ... [2020-09-24 21:24:40,603 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product35.cil.c [2020-09-24 21:24:40,615 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:24:40,626 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:24:40,648 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:24:40,681 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:24:40,681 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:24:40,681 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:24:40,681 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:24:40,681 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:24:40,681 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:24:40,681 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:24:40,682 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:24:40,711 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states. [2020-09-24 21:24:40,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-24 21:24:40,728 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:24:40,729 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 21:24:40,730 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:24:40,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:24:40,737 INFO L82 PathProgramCache]: Analyzing trace with hash 808133404, now seen corresponding path program 1 times [2020-09-24 21:24:40,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:24:40,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [93260649] [2020-09-24 21:24:40,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:24:41,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:24:41,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:41,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:43,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:44,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:46,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:24:46,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-24 21:24:46,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:24:46,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-09-24 21:24:46,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:24:46,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:24:46,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-24 21:24:46,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-24 21:24:46,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 21:24:46,727 WARN L193 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 21:24:46,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:24:46,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:24:46,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:47,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:24:47,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:24:47,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:24:47,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 348 [2020-09-24 21:24:47,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:24:47,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:24:47,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:24:47,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:24:47,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:24:47,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 21:24:47,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:24:47,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:47,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:24:47,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:24:47,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:24:47,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:24:47,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:24:47,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:24:47,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:24:47,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:24:47,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:24:47,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 21:24:47,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:24:47,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:47,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:24:47,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:24:47,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:24:47,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:24:47,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:24:47,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:24:47,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:24:47,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:24:47,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:24:47,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 21:24:47,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:24:47,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:47,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:24:47,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:24:47,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:24:47,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:24:47,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:24:47,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:24:47,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:24:47,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:24:47,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:24:47,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 21:24:47,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:24:47,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:47,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:24:47,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:24:47,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:24:47,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:24:47,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:24:47,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:24:47,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:24:47,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:24:47,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:24:47,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-24 21:24:47,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:24:47,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:47,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:24:47,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:24:47,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:24:47,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:24:47,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:24:47,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:24:47,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:24:47,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:24:47,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:24:47,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-24 21:24:47,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:24:47,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:47,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:24:47,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:24:47,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:24:47,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:24:47,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:24:47,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:24:47,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:24:47,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:24:47,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:24:47,294 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 21:24:47,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [93260649] [2020-09-24 21:24:47,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:24:47,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 21:24:47,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738702271] [2020-09-24 21:24:47,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 21:24:47,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:24:47,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 21:24:47,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 21:24:47,329 INFO L87 Difference]: Start difference. First operand 287 states. Second operand 4 states. [2020-09-24 21:24:47,957 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 21:24:49,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:24:49,955 INFO L93 Difference]: Finished difference Result 595 states and 724 transitions. [2020-09-24 21:24:49,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:24:49,957 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2020-09-24 21:24:49,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:24:49,979 INFO L225 Difference]: With dead ends: 595 [2020-09-24 21:24:49,980 INFO L226 Difference]: Without dead ends: 419 [2020-09-24 21:24:49,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:24:50,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2020-09-24 21:24:50,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 350. [2020-09-24 21:24:50,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2020-09-24 21:24:50,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 387 transitions. [2020-09-24 21:24:50,128 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 387 transitions. Word has length 142 [2020-09-24 21:24:50,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:24:50,129 INFO L479 AbstractCegarLoop]: Abstraction has 350 states and 387 transitions. [2020-09-24 21:24:50,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 21:24:50,130 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 387 transitions. [2020-09-24 21:24:50,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-24 21:24:50,135 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:24:50,135 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:24:50,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:24:50,136 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:24:50,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:24:50,136 INFO L82 PathProgramCache]: Analyzing trace with hash -528230044, now seen corresponding path program 1 times [2020-09-24 21:24:50,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:24:50,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1648118316] [2020-09-24 21:24:50,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:24:50,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:24:50,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:50,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:50,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:54,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:55,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:24:55,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-24 21:24:55,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:24:55,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-24 21:24:55,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:24:55,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 21:24:55,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-09-24 21:24:55,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 21:24:55,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:24:55,675 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 21:24:55,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:24:55,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:24:55,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:56,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:24:56,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:24:56,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:24:56,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-09-24 21:24:56,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:24:56,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:24:56,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:24:56,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 21:24:56,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:24:56,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 21:24:56,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:24:56,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:56,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:24:56,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:24:56,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:24:56,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:24:56,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:24:56,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:24:56,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:24:56,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:24:56,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:24:56,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 21:24:56,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:24:56,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:56,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:24:56,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:24:56,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:24:56,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:24:56,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:24:56,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:24:56,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:24:56,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:24:56,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:24:56,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 21:24:56,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:24:56,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:56,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:24:56,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:24:56,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:24:56,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 21:24:56,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:24:56,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:24:56,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:24:56,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:24:56,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:24:56,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 21:24:56,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:24:56,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:56,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:24:56,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:24:56,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:24:56,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:24:56,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:24:56,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:24:56,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:24:56,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:24:56,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:24:56,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-24 21:24:56,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:24:56,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:56,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:24:56,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 21:24:56,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:24:56,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:24:56,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:24:56,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:24:56,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:24:56,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 21:24:56,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:24:56,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:24:56,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:24:56,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:56,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:24:56,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:24:56,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:24:56,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:24:56,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:24:56,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:24:56,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:24:56,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:24:56,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:24:56,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-24 21:24:56,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:24:56,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:56,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:24:56,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:24:56,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:24:56,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:24:56,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:24:56,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:24:56,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:24:56,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:24:56,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:24:56,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-24 21:24:56,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:24:56,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:24:56,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:24:56,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:24:56,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:24:56,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:24:56,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:24:56,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:24:56,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:24:56,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:24:56,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:24:56,280 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 21:24:56,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1648118316] [2020-09-24 21:24:56,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:24:56,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 21:24:56,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131786543] [2020-09-24 21:24:56,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:24:56,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:24:56,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:24:56,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:24:56,285 INFO L87 Difference]: Start difference. First operand 350 states and 387 transitions. Second operand 7 states. [2020-09-24 21:24:56,777 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 21:24:58,119 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 21:24:59,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:24:59,053 INFO L93 Difference]: Finished difference Result 937 states and 1141 transitions. [2020-09-24 21:24:59,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 21:24:59,054 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 151 [2020-09-24 21:24:59,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:24:59,062 INFO L225 Difference]: With dead ends: 937 [2020-09-24 21:24:59,062 INFO L226 Difference]: Without dead ends: 697 [2020-09-24 21:24:59,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:24:59,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-09-24 21:24:59,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 579. [2020-09-24 21:24:59,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 579 states. [2020-09-24 21:24:59,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 658 transitions. [2020-09-24 21:24:59,177 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 658 transitions. Word has length 151 [2020-09-24 21:24:59,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:24:59,178 INFO L479 AbstractCegarLoop]: Abstraction has 579 states and 658 transitions. [2020-09-24 21:24:59,178 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:24:59,178 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 658 transitions. [2020-09-24 21:24:59,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-24 21:24:59,181 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:24:59,182 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:24:59,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:24:59,182 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:24:59,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:24:59,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1615445203, now seen corresponding path program 1 times [2020-09-24 21:24:59,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:24:59,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [372526268] [2020-09-24 21:24:59,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:24:59,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:24:59,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:00,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:00,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:03,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:04,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:04,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-24 21:25:04,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:25:04,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-24 21:25:04,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:04,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 21:25:04,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-09-24 21:25:04,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-24 21:25:04,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:04,552 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 21:25:04,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:25:04,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:04,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:04,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:04,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:25:04,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:04,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-09-24 21:25:04,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:04,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:25:04,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:04,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 21:25:04,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:25:04,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 21:25:04,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:04,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:04,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:04,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:25:04,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:04,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:25:04,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:04,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:25:04,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:04,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:25:04,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:04,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 21:25:04,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:04,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:04,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:04,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:25:04,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:04,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:25:04,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:04,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:25:04,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:04,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:25:04,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:04,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 21:25:04,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:04,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:04,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:04,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:25:04,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:04,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:25:04,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:04,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:25:04,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:04,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:25:04,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:04,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 21:25:04,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:04,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:04,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:04,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:25:04,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:04,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:25:04,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:04,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:25:04,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:04,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:25:04,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:04,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-24 21:25:04,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:04,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:04,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:04,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:04,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:25:04,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:25:04,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:25:04,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:04,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:25:04,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:25:04,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:25:04,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:25:04,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-24 21:25:04,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:04,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:04,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:04,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:25:04,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:04,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:25:04,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:04,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:25:04,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:04,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:25:04,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:04,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-24 21:25:04,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:04,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:04,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:04,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:25:04,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:04,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:25:04,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:04,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:25:04,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:04,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:25:04,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:05,029 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 21:25:05,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [372526268] [2020-09-24 21:25:05,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:25:05,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 21:25:05,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106400183] [2020-09-24 21:25:05,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 21:25:05,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:25:05,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 21:25:05,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:25:05,034 INFO L87 Difference]: Start difference. First operand 579 states and 658 transitions. Second operand 10 states. [2020-09-24 21:25:05,523 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 21:25:06,934 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:25:07,245 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 21:25:07,559 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:25:07,874 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 21:25:08,170 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:25:08,585 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 21:25:08,919 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:25:09,332 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 21:25:10,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:25:10,356 INFO L93 Difference]: Finished difference Result 707 states and 839 transitions. [2020-09-24 21:25:10,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 21:25:10,357 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2020-09-24 21:25:10,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:25:10,364 INFO L225 Difference]: With dead ends: 707 [2020-09-24 21:25:10,364 INFO L226 Difference]: Without dead ends: 704 [2020-09-24 21:25:10,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=118, Invalid=302, Unknown=0, NotChecked=0, Total=420 [2020-09-24 21:25:10,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2020-09-24 21:25:10,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 579. [2020-09-24 21:25:10,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 579 states. [2020-09-24 21:25:10,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 656 transitions. [2020-09-24 21:25:10,450 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 656 transitions. Word has length 161 [2020-09-24 21:25:10,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:25:10,451 INFO L479 AbstractCegarLoop]: Abstraction has 579 states and 656 transitions. [2020-09-24 21:25:10,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 21:25:10,451 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 656 transitions. [2020-09-24 21:25:10,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-09-24 21:25:10,454 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:25:10,454 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:25:10,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:25:10,455 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:25:10,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:25:10,455 INFO L82 PathProgramCache]: Analyzing trace with hash -20316787, now seen corresponding path program 1 times [2020-09-24 21:25:10,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:25:10,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1512771434] [2020-09-24 21:25:10,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:25:10,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:10,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:10,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:15,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:15,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-09-24 21:25:15,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:25:15,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-24 21:25:15,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:15,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 21:25:15,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-09-24 21:25:15,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-24 21:25:15,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:25:15,898 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 21:25:15,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:25:15,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:15,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:16,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:16,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:25:16,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:16,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-09-24 21:25:16,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:16,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:25:16,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:16,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 21:25:16,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:16,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 21:25:16,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:16,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:16,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:16,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:25:16,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:16,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:25:16,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:16,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:25:16,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:16,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:25:16,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:16,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 21:25:16,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:16,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:16,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:16,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:25:16,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:16,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:25:16,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:16,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:25:16,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:16,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:25:16,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:16,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 21:25:16,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:16,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:16,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:16,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:25:16,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:16,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:25:16,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:16,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:25:16,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:16,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:25:16,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:16,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 21:25:16,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:16,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:16,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:16,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:25:16,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:16,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:25:16,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:16,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:25:16,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:16,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:25:16,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:16,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-24 21:25:16,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:16,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:16,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:16,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:16,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 21:25:16,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:25:16,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-24 21:25:16,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:16,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:25:16,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:16,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-24 21:25:16,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:25:16,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:25:16,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:16,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:16,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:16,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 21:25:16,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:16,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:25:16,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:16,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:25:16,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:16,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:25:16,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:25:16,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:25:16,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:16,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:16,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:16,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:25:16,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:16,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:25:16,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:16,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:25:16,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:16,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:25:16,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:16,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 21:25:16,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:16,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:16,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:16,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 21:25:16,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:16,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:25:16,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:16,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:25:16,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:16,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:25:16,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:16,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-09-24 21:25:16,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:16,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:16,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:16,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:25:16,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:16,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:25:16,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:16,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:25:16,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:16,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:25:16,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:25:16,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-09-24 21:25:16,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:16,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:16,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:16,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:25:16,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:16,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:25:16,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:16,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:25:16,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:25:16,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:25:16,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:16,500 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 21:25:16,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1512771434] [2020-09-24 21:25:16,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:25:16,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 21:25:16,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64294672] [2020-09-24 21:25:16,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:25:16,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:25:16,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:25:16,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:25:16,503 INFO L87 Difference]: Start difference. First operand 579 states and 656 transitions. Second operand 9 states. [2020-09-24 21:25:17,073 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 21:25:18,272 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:25:18,603 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 21:25:18,936 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:25:19,271 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 21:25:19,585 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:25:20,311 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 21:25:20,608 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:25:21,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:25:21,899 INFO L93 Difference]: Finished difference Result 1500 states and 1896 transitions. [2020-09-24 21:25:21,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 21:25:21,904 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 185 [2020-09-24 21:25:21,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:25:21,915 INFO L225 Difference]: With dead ends: 1500 [2020-09-24 21:25:21,915 INFO L226 Difference]: Without dead ends: 1031 [2020-09-24 21:25:21,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-24 21:25:21,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2020-09-24 21:25:22,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 931. [2020-09-24 21:25:22,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 931 states. [2020-09-24 21:25:22,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 1122 transitions. [2020-09-24 21:25:22,076 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 1122 transitions. Word has length 185 [2020-09-24 21:25:22,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:25:22,077 INFO L479 AbstractCegarLoop]: Abstraction has 931 states and 1122 transitions. [2020-09-24 21:25:22,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:25:22,077 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 1122 transitions. [2020-09-24 21:25:22,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-09-24 21:25:22,082 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:25:22,083 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:25:22,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:25:22,083 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:25:22,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:25:22,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1154696327, now seen corresponding path program 1 times [2020-09-24 21:25:22,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:25:22,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2057320593] [2020-09-24 21:25:22,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:25:22,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:22,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:22,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:22,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:23,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:23,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-09-24 21:25:23,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:25:23,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1829 [2020-09-24 21:25:23,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:23,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:25:23,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-24 21:25:23,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-24 21:25:23,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:24,269 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 21:25:24,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:25:24,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:24,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:24,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:24,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:25:24,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:24,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-09-24 21:25:24,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:24,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:25:24,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:24,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:25:24,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:24,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 21:25:24,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:24,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:24,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:24,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:25:24,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:24,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:25:24,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:24,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:25:24,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:24,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:25:24,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:24,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 21:25:24,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:24,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:24,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:24,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:25:24,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:24,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:25:24,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:24,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:25:24,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:24,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:25:24,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:24,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 21:25:24,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:24,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:24,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:24,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:25:24,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:24,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:25:24,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:24,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:25:24,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:24,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:25:24,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:24,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 21:25:24,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:24,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:24,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:24,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:25:24,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:24,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:25:24,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:24,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:25:24,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:24,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:25:24,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:24,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-24 21:25:24,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:24,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:24,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:24,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:24,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-24 21:25:24,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:25:24,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-09-24 21:25:24,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:24,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:25:24,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:24,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-24 21:25:24,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:24,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:25:24,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:24,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:24,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:24,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:24,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 21:25:24,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:25:24,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-24 21:25:24,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:24,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:25:24,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:24,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:25:24,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:24,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:25:24,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:24,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:24,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:24,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 21:25:24,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:24,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:25:24,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:24,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:25:24,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:24,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:25:24,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:24,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:25:24,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:24,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:24,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:24,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:25:24,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:24,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:25:24,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:24,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:25:24,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:24,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:25:24,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:24,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 21:25:24,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:24,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:24,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:24,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 21:25:24,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:24,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:25:24,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:24,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:25:24,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:24,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:25:24,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:24,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-24 21:25:24,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:24,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:24,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:24,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 21:25:24,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:24,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:25:24,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:24,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:25:24,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:24,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:25:24,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:24,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:25:24,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:24,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:24,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:24,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:25:24,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:24,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:25:24,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:24,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:25:24,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:24,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:25:24,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:24,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-09-24 21:25:24,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:24,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:24,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:24,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:25:24,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:24,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:25:24,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:24,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:25:24,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 21:25:24,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:25:24,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:24,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-09-24 21:25:24,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:24,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:24,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:24,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 21:25:24,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:24,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:25:24,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:24,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:25:24,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:25:24,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:25:24,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:24,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:25:24,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:24,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:24,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:24,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:25:24,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:24,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:25:24,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:24,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:25:24,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:24,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:25:24,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:24,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-09-24 21:25:24,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:24,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:24,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:24,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:25:24,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:24,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:25:24,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:24,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:25:24,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:25:24,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:25:24,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:24,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-09-24 21:25:24,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:24,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:24,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:24,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:25:24,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:24,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:25:24,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:24,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:25:24,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:25:24,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:25:24,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:24,956 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 21:25:24,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2057320593] [2020-09-24 21:25:24,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:25:24,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 21:25:24,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609679371] [2020-09-24 21:25:24,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:25:24,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:25:24,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:25:24,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:25:24,959 INFO L87 Difference]: Start difference. First operand 931 states and 1122 transitions. Second operand 7 states.