/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_product52.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:25:38,820 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:25:38,824 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:25:38,850 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:25:38,850 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:25:38,852 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:25:38,853 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:25:38,855 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:25:38,857 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:25:38,858 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:25:38,859 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:25:38,860 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:25:38,860 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:25:38,862 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:25:38,863 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:25:38,864 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:25:38,865 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:25:38,866 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:25:38,868 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:25:38,870 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:25:38,872 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:25:38,873 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:25:38,874 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:25:38,875 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:25:38,878 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:25:38,878 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:25:38,878 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:25:38,879 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:25:38,880 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:25:38,881 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:25:38,881 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:25:38,882 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:25:38,883 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:25:38,884 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:25:38,885 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:25:38,885 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:25:38,886 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:25:38,886 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:25:38,886 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:25:38,888 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:25:38,888 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:25:38,889 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 21:25:38,919 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:25:38,919 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:25:38,920 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:25:38,921 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:25:38,921 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:25:38,921 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:25:38,921 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:25:38,921 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:25:38,922 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:25:38,922 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:25:38,922 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:25:38,922 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:25:38,922 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:25:38,922 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:25:38,923 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:25:38,923 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:25:38,923 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:25:38,923 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:25:38,924 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:25:38,925 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:25:38,925 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:25:38,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:25:38,925 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:25:38,926 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:25:38,926 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:25:38,926 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:25:38,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:25:38,926 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:25:38,927 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:25:38,927 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 21:25:39,405 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:25:39,428 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:25:39,432 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:25:39,434 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:25:39,436 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:25:39,437 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product52.cil.c [2020-09-24 21:25:39,517 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c29aad3b5/3d56314ad3ac4d8d96192551577d1dbe/FLAG62d041272 [2020-09-24 21:25:40,149 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:25:40,150 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product52.cil.c [2020-09-24 21:25:40,165 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c29aad3b5/3d56314ad3ac4d8d96192551577d1dbe/FLAG62d041272 [2020-09-24 21:25:40,374 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c29aad3b5/3d56314ad3ac4d8d96192551577d1dbe [2020-09-24 21:25:40,387 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:25:40,393 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:25:40,394 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:25:40,394 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:25:40,399 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:25:40,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:25:40" (1/1) ... [2020-09-24 21:25:40,404 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51800d17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:25:40, skipping insertion in model container [2020-09-24 21:25:40,405 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:25:40" (1/1) ... [2020-09-24 21:25:40,414 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:25:40,466 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:25:40,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:25:40,885 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:25:41,131 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:25:41,170 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:25:41,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:25:41 WrapperNode [2020-09-24 21:25:41,171 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:25:41,172 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:25:41,172 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:25:41,172 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:25:41,189 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:25:41" (1/1) ... [2020-09-24 21:25:41,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:25:41" (1/1) ... [2020-09-24 21:25:41,211 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:25:41" (1/1) ... [2020-09-24 21:25:41,212 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:25:41" (1/1) ... [2020-09-24 21:25:41,261 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:25:41" (1/1) ... [2020-09-24 21:25:41,280 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:25:41" (1/1) ... [2020-09-24 21:25:41,288 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:25:41" (1/1) ... [2020-09-24 21:25:41,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:25:41,296 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:25:41,297 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:25:41,297 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:25:41,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:25:41" (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 21:25:41,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:25:41,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:25:41,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 21:25:41,388 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 21:25:41,389 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 21:25:41,389 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 21:25:41,389 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 21:25:41,389 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 21:25:41,389 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 21:25:41,390 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-24 21:25:41,390 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-24 21:25:41,390 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 21:25:41,390 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 21:25:41,391 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 21:25:41,391 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 21:25:41,391 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 21:25:41,391 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 21:25:41,391 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 21:25:41,392 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 21:25:41,392 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 21:25:41,392 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-24 21:25:41,392 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-24 21:25:41,393 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-24 21:25:41,393 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-24 21:25:41,393 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 21:25:41,393 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 21:25:41,393 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 21:25:41,393 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 21:25:41,394 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 21:25:41,394 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 21:25:41,394 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 21:25:41,394 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 21:25:41,394 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 21:25:41,394 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 21:25:41,395 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 21:25:41,395 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:25:41,395 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 21:25:41,395 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 21:25:41,395 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 21:25:41,395 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 21:25:41,396 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 21:25:41,396 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-09-24 21:25:41,396 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:25:41,396 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:25:41,396 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 21:25:41,397 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 21:25:41,397 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 21:25:41,397 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 21:25:41,397 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 21:25:41,397 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 21:25:41,397 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 21:25:41,398 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-24 21:25:41,398 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-24 21:25:41,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 21:25:41,398 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 21:25:41,398 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 21:25:41,398 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 21:25:41,399 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 21:25:41,399 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 21:25:41,399 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-24 21:25:41,399 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-24 21:25:41,399 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-09-24 21:25:41,399 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 21:25:41,400 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 21:25:41,400 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-24 21:25:41,400 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 21:25:41,400 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-24 21:25:41,400 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 21:25:41,401 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 21:25:41,401 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 21:25:41,401 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 21:25:41,401 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 21:25:41,401 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 21:25:41,401 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 21:25:41,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 21:25:41,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 21:25:41,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 21:25:41,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 21:25:41,402 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 21:25:41,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 21:25:41,403 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 21:25:41,403 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 21:25:41,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 21:25:41,403 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 21:25:41,403 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 21:25:41,403 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 21:25:41,404 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 21:25:41,404 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 21:25:41,404 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 21:25:41,404 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 21:25:41,404 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 21:25:41,404 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 21:25:41,404 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:25:41,405 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 21:25:41,405 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 21:25:41,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:25:41,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 21:25:41,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:25:42,732 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:25:42,732 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 21:25:42,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:25:42 BoogieIcfgContainer [2020-09-24 21:25:42,740 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:25:42,741 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:25:42,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:25:42,746 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:25:42,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:25:40" (1/3) ... [2020-09-24 21:25:42,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3032c4bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:25:42, skipping insertion in model container [2020-09-24 21:25:42,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:25:41" (2/3) ... [2020-09-24 21:25:42,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3032c4bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:25:42, skipping insertion in model container [2020-09-24 21:25:42,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:25:42" (3/3) ... [2020-09-24 21:25:42,750 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product52.cil.c [2020-09-24 21:25:42,765 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:25:42,777 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:25:42,803 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:25:42,836 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:25:42,837 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:25:42,837 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:25:42,837 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:25:42,837 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:25:42,837 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:25:42,838 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:25:42,838 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:25:42,867 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states. [2020-09-24 21:25:42,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-24 21:25:42,885 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:25:42,887 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 21:25:42,888 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:25:42,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:25:42,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1964738656, now seen corresponding path program 1 times [2020-09-24 21:25:42,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:25:42,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [165928009] [2020-09-24 21:25:42,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:25:43,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:43,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:43,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:45,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:46,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:48,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:48,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-24 21:25:48,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:25:48,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-09-24 21:25:48,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:48,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 21:25:48,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-09-24 21:25:48,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-24 21:25:48,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 17 [2020-09-24 21:25:48,877 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 21:25:48,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:25:48,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:49,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:49,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:49,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:25:49,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:49,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 333 [2020-09-24 21:25:49,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:49,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:25:49,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:49,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 21:25:49,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:49,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 21:25:49,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:49,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:49,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:49,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:25:49,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:49,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:25:49,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:49,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:25:49,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:49,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:25:49,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:49,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 21:25:49,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:49,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:49,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:49,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:25:49,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:49,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:25:49,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:49,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:25:49,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:49,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:25:49,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:25:49,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 21:25:49,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:49,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:49,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:49,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:25:49,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:49,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 21:25:49,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:49,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:25:49,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:49,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:25:49,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:49,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 21:25:49,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:49,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:49,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:49,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:25:49,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:49,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:25:49,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:49,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:25:49,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:49,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:25:49,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:49,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-24 21:25:49,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:49,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:49,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:49,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:25:49,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:49,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 21:25:49,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:49,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:25:49,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:25:49,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:25:49,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:49,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-24 21:25:49,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:49,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:49,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:25:49,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:25:49,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:25:49,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:25:49,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:25:49,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:25:49,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:25:49,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:25:49,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:25:49,640 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 21:25:49,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [165928009] [2020-09-24 21:25:49,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:25:49,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 21:25:49,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708916666] [2020-09-24 21:25:49,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 21:25:49,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:25:49,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 21:25:49,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:25:49,688 INFO L87 Difference]: Start difference. First operand 322 states. Second operand 8 states. [2020-09-24 21:25:50,296 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 21:25:51,503 WARN L193 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 190 [2020-09-24 21:25:52,165 WARN L193 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 192 [2020-09-24 21:25:52,638 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:25:53,108 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 21:25:53,471 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 21:25:53,862 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-09-24 21:25:54,177 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:25:54,965 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 21:25:56,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:25:56,799 INFO L93 Difference]: Finished difference Result 688 states and 843 transitions. [2020-09-24 21:25:56,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 21:25:56,801 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 142 [2020-09-24 21:25:56,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:25:56,822 INFO L225 Difference]: With dead ends: 688 [2020-09-24 21:25:56,823 INFO L226 Difference]: Without dead ends: 477 [2020-09-24 21:25:56,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2020-09-24 21:25:56,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2020-09-24 21:25:56,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 428. [2020-09-24 21:25:56,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428 states. [2020-09-24 21:25:56,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 482 transitions. [2020-09-24 21:25:56,998 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 482 transitions. Word has length 142 [2020-09-24 21:25:56,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:25:56,999 INFO L479 AbstractCegarLoop]: Abstraction has 428 states and 482 transitions. [2020-09-24 21:25:56,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 21:25:56,999 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 482 transitions. [2020-09-24 21:25:57,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-24 21:25:57,006 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:25:57,006 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:25:57,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:25:57,007 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:25:57,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:25:57,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1633084880, now seen corresponding path program 1 times [2020-09-24 21:25:57,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:25:57,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1137399065] [2020-09-24 21:25:57,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:25:57,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:25:57,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:57,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:25:58,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:02,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:02,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-24 21:26:02,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:26:02,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-24 21:26:02,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:02,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 21:26:02,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-24 21:26:02,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-24 21:26:02,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:02,434 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 21:26:02,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:26:02,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:02,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:02,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:02,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:26:02,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:02,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-09-24 21:26:02,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:02,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:26:02,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:02,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 21:26:02,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:02,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 21:26:02,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:02,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:02,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:02,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:26:02,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:02,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:26:02,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:02,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:26:02,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:02,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:26:02,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:26:02,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 21:26:02,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:02,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:02,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:02,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:26:02,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:02,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:26:02,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:02,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:26:02,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:02,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:26:02,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:26:02,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 21:26:02,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:02,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:02,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:02,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:26:02,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:02,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 21:26:02,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:02,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:26:02,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:02,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:26:02,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:02,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 21:26:02,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:02,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:02,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:02,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:26:02,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:02,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:26:02,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:02,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:26:02,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:02,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:26:02,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:26:02,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-24 21:26:02,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:02,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:02,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:02,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:26:02,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:02,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:26:02,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:02,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:26:02,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 21:26:02,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:26:02,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:26:02,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-24 21:26:02,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:02,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:02,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:02,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:26:02,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:02,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:26:02,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:02,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:26:02,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:26:02,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:26:02,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:02,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-24 21:26:02,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:02,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:02,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:02,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:26:02,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:02,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:26:02,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:02,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:26:02,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:26:02,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:26:02,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 21:26:02,907 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 21:26:02,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1137399065] [2020-09-24 21:26:02,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:26:02,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:26:02,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716969029] [2020-09-24 21:26:02,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:26:02,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:26:02,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:26:02,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:26:02,915 INFO L87 Difference]: Start difference. First operand 428 states and 482 transitions. Second operand 5 states. [2020-09-24 21:26:03,403 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 21:26:05,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:26:05,504 INFO L93 Difference]: Finished difference Result 946 states and 1178 transitions. [2020-09-24 21:26:05,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 21:26:05,506 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-09-24 21:26:05,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:26:05,514 INFO L225 Difference]: With dead ends: 946 [2020-09-24 21:26:05,514 INFO L226 Difference]: Without dead ends: 628 [2020-09-24 21:26:05,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:26:05,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-09-24 21:26:05,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 566. [2020-09-24 21:26:05,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 566 states. [2020-09-24 21:26:05,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 662 transitions. [2020-09-24 21:26:05,626 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 662 transitions. Word has length 148 [2020-09-24 21:26:05,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:26:05,627 INFO L479 AbstractCegarLoop]: Abstraction has 566 states and 662 transitions. [2020-09-24 21:26:05,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:26:05,628 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 662 transitions. [2020-09-24 21:26:05,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-24 21:26:05,630 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:26:05,631 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 21:26:05,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:26:05,631 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:26:05,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:26:05,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1462775773, now seen corresponding path program 1 times [2020-09-24 21:26:05,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:26:05,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1173905523] [2020-09-24 21:26:05,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:26:05,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:05,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:05,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:07,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:07,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:10,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:10,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-24 21:26:10,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:26:10,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 21:26:10,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:10,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 21:26:10,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-09-24 21:26:10,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-24 21:26:10,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:26:10,994 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 21:26:10,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:26:11,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:11,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:11,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:11,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:26:11,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:11,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-09-24 21:26:11,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:11,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:26:11,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:11,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 21:26:11,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:11,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 21:26:11,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:11,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:11,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:11,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:26:11,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:11,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:26:11,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:11,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:26:11,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:11,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:26:11,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:11,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 21:26:11,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:11,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:11,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:11,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:26:11,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:11,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:26:11,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:11,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:26:11,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:11,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:26:11,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:26:11,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 21:26:11,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:11,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:11,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:11,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:26:11,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:11,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:26:11,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:11,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:26:11,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:11,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:26:11,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:11,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 21:26:11,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:11,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:11,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:11,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:26:11,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:11,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:26:11,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:11,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:26:11,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:11,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:26:11,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:11,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-24 21:26:11,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:11,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:11,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:11,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:26:11,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:11,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 21:26:11,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:11,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:26:11,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:26:11,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:26:11,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:11,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-24 21:26:11,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:11,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:11,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:11,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 21:26:11,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:11,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:26:11,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:11,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:26:11,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:11,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 21:26:11,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 21:26:11,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-24 21:26:11,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:11,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:11,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:11,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:26:11,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:11,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 21:26:11,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:11,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:26:11,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:11,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:26:11,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:11,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-24 21:26:11,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:11,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:11,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:11,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:26:11,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:11,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:26:11,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:11,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:26:11,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:26:11,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:26:11,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:11,555 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 21:26:11,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1173905523] [2020-09-24 21:26:11,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:26:11,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-24 21:26:11,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894565128] [2020-09-24 21:26:11,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 21:26:11,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:26:11,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 21:26:11,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:26:11,559 INFO L87 Difference]: Start difference. First operand 566 states and 662 transitions. Second operand 12 states. [2020-09-24 21:26:12,224 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 21:26:13,613 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-09-24 21:26:14,214 WARN L193 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 190 [2020-09-24 21:26:14,580 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 21:26:14,990 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 21:26:15,381 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 21:26:16,686 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-24 21:26:17,047 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-09-24 21:26:17,503 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:26:20,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:26:20,363 INFO L93 Difference]: Finished difference Result 1346 states and 1895 transitions. [2020-09-24 21:26:20,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-24 21:26:20,364 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 161 [2020-09-24 21:26:20,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:26:20,373 INFO L225 Difference]: With dead ends: 1346 [2020-09-24 21:26:20,373 INFO L226 Difference]: Without dead ends: 1077 [2020-09-24 21:26:20,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=175, Invalid=581, Unknown=0, NotChecked=0, Total=756 [2020-09-24 21:26:20,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2020-09-24 21:26:20,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 760. [2020-09-24 21:26:20,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 760 states. [2020-09-24 21:26:20,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 938 transitions. [2020-09-24 21:26:20,548 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 938 transitions. Word has length 161 [2020-09-24 21:26:20,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:26:20,550 INFO L479 AbstractCegarLoop]: Abstraction has 760 states and 938 transitions. [2020-09-24 21:26:20,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 21:26:20,550 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 938 transitions. [2020-09-24 21:26:20,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-09-24 21:26:20,559 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:26:20,560 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 21:26:20,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:26:20,560 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:26:20,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:26:20,561 INFO L82 PathProgramCache]: Analyzing trace with hash -503463126, now seen corresponding path program 1 times [2020-09-24 21:26:20,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:26:20,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11517440] [2020-09-24 21:26:20,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:26:20,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:20,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:20,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:21,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:21,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:25,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:25,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-09-24 21:26:25,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:26:25,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 21:26:25,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:25,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:26:25,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-24 21:26:25,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-24 21:26:25,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:25,911 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 21:26:25,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:26:25,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:25,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:26,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:26,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:26:26,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:26,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-09-24 21:26:26,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:26,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:26:26,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:26,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 21:26:26,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:26,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 21:26:26,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:26,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:26,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:26,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:26:26,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:26,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:26:26,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:26,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:26:26,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:26,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:26:26,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:26,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 21:26:26,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:26,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:26,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:26,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:26:26,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:26,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:26:26,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:26,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:26:26,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:26,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:26:26,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:26,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 21:26:26,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:26,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:26,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:26,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:26:26,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:26,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:26:26,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:26,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:26:26,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:26,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:26:26,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:26,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 21:26:26,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:26,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:26,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:26,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:26:26,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:26,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:26:26,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:26,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:26:26,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:26,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:26:26,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:26,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-24 21:26:26,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:26,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:26,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:26,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:26,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-24 21:26:26,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:26:26,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-09-24 21:26:26,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:26,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:26:26,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:26,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 21:26:26,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:26,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:26:26,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:26,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:26,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:26,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:26,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 21:26:26,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:26:26,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-24 21:26:26,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:26,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:26:26,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:26,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:26:26,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:26,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:26:26,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:26,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:26,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:26,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:26,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 21:26:26,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:26:26,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-24 21:26:26,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:26,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:26:26,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:26,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:26:26,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:26,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:26:26,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:26,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:26,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:26,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 21:26:26,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:26,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:26:26,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:26,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:26:26,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:26,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:26:26,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:26:26,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:26:26,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:26,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:26,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:26,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:26:26,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:26,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:26:26,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:26,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:26:26,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:26,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:26:26,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:26,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 21:26:26,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:26,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:26,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:26,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 21:26:26,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:26,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:26:26,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:26,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:26:26,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:26,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:26:26,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:26:26,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-24 21:26:26,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:26,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:26,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:26,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 21:26:26,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:26,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:26:26,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:26,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:26:26,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:26,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:26:26,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:26,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:26:26,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:26,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:26,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:26,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:26:26,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:26,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:26:26,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:26,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:26:26,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:26,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:26:26,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:26,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-09-24 21:26:26,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:26,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:26,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:26,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:26:26,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:26,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:26:26,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:26,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:26:26,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:26:26,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:26:26,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:26,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-09-24 21:26:26,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:26,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:26,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:26,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:26:26,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:26,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:26:26,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:26,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:26:26,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:26:26,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:26:26,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:26,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-09-24 21:26:26,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:26:26,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:26:26,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:26:26,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:26:26,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:26:26,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:26:26,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:26:26,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:26:26,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:26:26,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:26:26,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:26:26,756 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-24 21:26:26,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11517440] [2020-09-24 21:26:26,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:26:26,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 21:26:26,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872322035] [2020-09-24 21:26:26,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:26:26,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:26:26,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:26:26,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:26:26,758 INFO L87 Difference]: Start difference. First operand 760 states and 938 transitions. Second operand 7 states. [2020-09-24 21:26:27,245 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 186