/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product47.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:13:01,539 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:13:01,543 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:13:01,595 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:13:01,596 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:13:01,604 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:13:01,607 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:13:01,610 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:13:01,613 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:13:01,617 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:13:01,618 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:13:01,619 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:13:01,619 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:13:01,622 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:13:01,625 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:13:01,627 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:13:01,628 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:13:01,630 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:13:01,631 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:13:01,640 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:13:01,643 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:13:01,644 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:13:01,645 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:13:01,646 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:13:01,659 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:13:01,659 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:13:01,659 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:13:01,666 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:13:01,666 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:13:01,671 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:13:01,671 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:13:01,675 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:13:01,676 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:13:01,677 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:13:01,678 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:13:01,678 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:13:01,679 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:13:01,679 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:13:01,680 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:13:01,681 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:13:01,682 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:13:01,683 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 [2020-09-25 05:13:01,728 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:13:01,729 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:13:01,731 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:13:01,731 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:13:01,731 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:13:01,732 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:13:01,732 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:13:01,732 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:13:01,733 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:13:01,733 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:13:01,734 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:13:01,734 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:13:01,734 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:13:01,735 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:13:01,735 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:13:01,735 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:13:01,735 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:13:01,736 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:13:01,736 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:13:01,736 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:13:01,736 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:13:01,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:13:01,737 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:13:01,737 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:13:01,737 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:13:01,737 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:13:01,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:13:01,738 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:13:01,738 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:13:01,738 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:13:02,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:13:02,320 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:13:02,325 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:13:02,327 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:13:02,327 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:13:02,328 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product47.cil.c [2020-09-25 05:13:02,402 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bea844d9f/ceaa8292cb91489d823625296de6d860/FLAG811c847bd [2020-09-25 05:13:03,006 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:13:03,007 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product47.cil.c [2020-09-25 05:13:03,035 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bea844d9f/ceaa8292cb91489d823625296de6d860/FLAG811c847bd [2020-09-25 05:13:03,240 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bea844d9f/ceaa8292cb91489d823625296de6d860 [2020-09-25 05:13:03,254 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:13:03,258 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:13:03,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:13:03,260 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:13:03,264 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:13:03,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:13:03" (1/1) ... [2020-09-25 05:13:03,269 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2970dae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:13:03, skipping insertion in model container [2020-09-25 05:13:03,269 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:13:03" (1/1) ... [2020-09-25 05:13:03,279 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:13:03,326 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:13:03,809 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:13:03,831 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:13:03,913 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:13:03,956 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:13:03,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:13:03 WrapperNode [2020-09-25 05:13:03,957 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:13:03,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:13:03,958 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:13:03,959 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:13:03,974 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:13:03" (1/1) ... [2020-09-25 05:13:03,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:13:03" (1/1) ... [2020-09-25 05:13:03,996 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:13:03" (1/1) ... [2020-09-25 05:13:03,997 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:13:03" (1/1) ... [2020-09-25 05:13:04,032 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:13:03" (1/1) ... [2020-09-25 05:13:04,045 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:13:03" (1/1) ... [2020-09-25 05:13:04,050 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:13:03" (1/1) ... [2020-09-25 05:13:04,058 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:13:04,059 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:13:04,059 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:13:04,059 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:13:04,061 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:13:03" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:13:04,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:13:04,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:13:04,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-25 05:13:04,142 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-25 05:13:04,142 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-25 05:13:04,142 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-25 05:13:04,142 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-25 05:13:04,143 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-25 05:13:04,144 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-25 05:13:04,144 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-25 05:13:04,144 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-25 05:13:04,144 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-25 05:13:04,144 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-25 05:13:04,144 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-25 05:13:04,145 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-09-25 05:13:04,146 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-09-25 05:13:04,146 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-25 05:13:04,146 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-25 05:13:04,146 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-25 05:13:04,147 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-25 05:13:04,147 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:13:04,148 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-25 05:13:04,148 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-25 05:13:04,148 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-25 05:13:04,150 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-25 05:13:04,151 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-25 05:13:04,151 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-25 05:13:04,151 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-25 05:13:04,151 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-25 05:13:04,151 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-25 05:13:04,151 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-09-25 05:13:04,152 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-25 05:13:04,152 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-09-25 05:13:04,152 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-25 05:13:04,152 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-25 05:13:04,152 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-25 05:13:04,152 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-25 05:13:04,152 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-25 05:13:04,153 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-25 05:13:04,153 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-25 05:13:04,153 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-25 05:13:04,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:13:04,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:13:04,153 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-25 05:13:04,154 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-25 05:13:04,154 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-25 05:13:04,154 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-25 05:13:04,154 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-25 05:13:04,154 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-25 05:13:04,155 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-25 05:13:04,155 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 05:13:04,155 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 05:13:04,155 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-25 05:13:04,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 05:13:04,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 05:13:04,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 05:13:04,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 05:13:04,156 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-25 05:13:04,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 05:13:04,156 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-25 05:13:04,156 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-25 05:13:04,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 05:13:04,157 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-25 05:13:04,157 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-25 05:13:04,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 05:13:04,157 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-25 05:13:04,157 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-25 05:13:04,157 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-25 05:13:04,158 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-09-25 05:13:04,158 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-09-25 05:13:04,158 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-25 05:13:04,158 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-25 05:13:04,158 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-25 05:13:04,158 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-25 05:13:04,159 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-25 05:13:04,159 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-25 05:13:04,159 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-25 05:13:04,159 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-25 05:13:04,159 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-25 05:13:04,159 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:13:04,159 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-25 05:13:04,160 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-25 05:13:04,160 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-25 05:13:04,160 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-25 05:13:04,160 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-25 05:13:04,160 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-25 05:13:04,160 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-25 05:13:04,160 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-25 05:13:04,160 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-25 05:13:04,160 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-25 05:13:04,161 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-09-25 05:13:04,161 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-25 05:13:04,161 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-09-25 05:13:04,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:13:04,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 05:13:04,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:13:05,442 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:13:05,443 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-25 05:13:05,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:13:05 BoogieIcfgContainer [2020-09-25 05:13:05,451 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:13:05,453 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:13:05,453 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:13:05,458 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:13:05,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:13:03" (1/3) ... [2020-09-25 05:13:05,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5da969d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:13:05, skipping insertion in model container [2020-09-25 05:13:05,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:13:03" (2/3) ... [2020-09-25 05:13:05,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5da969d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:13:05, skipping insertion in model container [2020-09-25 05:13:05,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:13:05" (3/3) ... [2020-09-25 05:13:05,463 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product47.cil.c [2020-09-25 05:13:05,478 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:13:05,490 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:13:05,515 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:13:05,556 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:13:05,556 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:13:05,556 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:13:05,556 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:13:05,556 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:13:05,557 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:13:05,557 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:13:05,557 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:13:05,589 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states. [2020-09-25 05:13:05,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-25 05:13:05,609 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:13:05,610 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] [2020-09-25 05:13:05,611 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:13:05,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:13:05,620 INFO L82 PathProgramCache]: Analyzing trace with hash -149848456, now seen corresponding path program 1 times [2020-09-25 05:13:05,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:13:05,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [573235775] [2020-09-25 05:13:05,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:13:06,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:13:06,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:06,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:07,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:08,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:09,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:11,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:13:11,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-25 05:13:11,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:13:11,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 05:13:11,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:13:11,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:13:11,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:13:11,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-09-25 05:13:11,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:13:11,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 16 [2020-09-25 05:13:11,543 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 05:13:11,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:13:11,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:13:11,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:11,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:13:11,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 05:13:11,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:13:11,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-25 05:13:11,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:13:11,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:13:11,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:13:11,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:13:11,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:13:11,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:13:11,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 05:13:11,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:13:11,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:11,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:13:11,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:13:11,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:13:11,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:13:11,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:13:11,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:13:11,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:13:11,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:13:11,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:13:11,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:13:11,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 05:13:11,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:13:11,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:11,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:13:11,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:13:11,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:13:11,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:13:11,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:13:11,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:13:11,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:13:11,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:13:11,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:13:11,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:13:11,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 05:13:11,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:13:11,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:11,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:13:11,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:13:11,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:13:11,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:13:11,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:13:11,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:13:11,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:13:11,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:13:11,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:13:11,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:13:11,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 05:13:11,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:13:11,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:11,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:13:11,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:13:11,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:13:11,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:13:11,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:13:11,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:13:11,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:13:11,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:13:11,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:13:11,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:13:11,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 05:13:11,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:13:11,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:11,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:13:11,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 05:13:11,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:13:11,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:13:11,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:13:11,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:13:11,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:13:11,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:13:11,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:13:11,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:13:11,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-25 05:13:11,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:13:11,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:11,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:13:11,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:13:11,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:13:11,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:13:11,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:13:11,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:13:11,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:13:11,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 05:13:11,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:13:11,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:13:11,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-25 05:13:11,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:13:11,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:11,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:13:11,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:13:11,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:13:11,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:13:11,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:13:11,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:13:11,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:13:11,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 05:13:11,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:13:11,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:13:11,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:13:11,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [573235775] [2020-09-25 05:13:11,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:13:11,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:13:11,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865952537] [2020-09-25 05:13:11,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:13:11,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:13:11,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:13:11,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:13:11,941 INFO L87 Difference]: Start difference. First operand 325 states. Second operand 4 states. [2020-09-25 05:13:13,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:13:13,766 INFO L93 Difference]: Finished difference Result 515 states and 614 transitions. [2020-09-25 05:13:13,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 05:13:13,768 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2020-09-25 05:13:13,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:13:13,790 INFO L225 Difference]: With dead ends: 515 [2020-09-25 05:13:13,790 INFO L226 Difference]: Without dead ends: 326 [2020-09-25 05:13:13,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:13:13,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-09-25 05:13:14,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 274. [2020-09-25 05:13:14,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-09-25 05:13:14,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 301 transitions. [2020-09-25 05:13:14,016 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 301 transitions. Word has length 148 [2020-09-25 05:13:14,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:13:14,018 INFO L479 AbstractCegarLoop]: Abstraction has 274 states and 301 transitions. [2020-09-25 05:13:14,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:13:14,019 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 301 transitions. [2020-09-25 05:13:14,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-25 05:13:14,032 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:13:14,032 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] [2020-09-25 05:13:14,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:13:14,033 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:13:14,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:13:14,034 INFO L82 PathProgramCache]: Analyzing trace with hash -807647223, now seen corresponding path program 1 times [2020-09-25 05:13:14,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:13:14,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1439353751] [2020-09-25 05:13:14,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:13:14,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:13:14,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:14,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:15,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:16,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:17,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:18,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:19,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:13:19,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-25 05:13:19,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:13:19,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 05:13:19,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:13:19,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:13:19,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:13:19,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-09-25 05:13:19,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 05:13:19,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:13:19,497 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 05:13:19,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:13:19,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:13:19,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:19,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:13:19,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 05:13:19,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:13:19,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-25 05:13:19,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:13:19,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:13:19,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:13:19,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:13:19,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:13:19,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:13:19,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 05:13:19,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:13:19,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:19,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:13:19,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:13:19,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:13:19,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:13:19,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:13:19,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:13:19,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:13:19,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:13:19,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:13:19,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:13:19,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 05:13:19,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:13:19,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:19,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:13:19,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:13:19,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:13:19,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:13:19,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:13:19,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:13:19,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:13:19,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:13:19,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:13:19,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:13:19,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 05:13:19,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:13:19,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:19,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:13:19,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:13:19,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:13:19,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:13:19,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:13:19,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:13:19,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:13:19,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:13:19,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:13:19,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:13:19,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 05:13:19,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:13:19,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:19,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:13:19,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:13:19,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:13:19,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:13:19,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:13:19,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:13:19,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:13:19,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:13:19,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:13:19,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:13:19,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 05:13:19,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:13:19,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:19,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:13:19,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 05:13:19,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:13:19,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:13:19,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:13:19,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:13:19,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:13:19,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:13:19,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:13:19,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:13:19,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-25 05:13:19,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:13:19,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:19,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:13:19,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:13:19,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:13:19,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:13:19,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:13:19,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:13:19,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:13:19,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 05:13:19,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:13:19,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:13:19,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-25 05:13:19,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:13:19,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:19,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:13:19,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:13:19,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:13:19,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:13:19,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:13:19,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:13:19,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:13:19,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 05:13:19,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:13:19,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:13:19,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:13:19,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1439353751] [2020-09-25 05:13:19,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:13:19,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 05:13:19,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450819844] [2020-09-25 05:13:19,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:13:19,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:13:19,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:13:19,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:13:19,767 INFO L87 Difference]: Start difference. First operand 274 states and 301 transitions. Second operand 5 states. [2020-09-25 05:13:20,718 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 05:13:22,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:13:22,524 INFO L93 Difference]: Finished difference Result 438 states and 501 transitions. [2020-09-25 05:13:22,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 05:13:22,524 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-09-25 05:13:22,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:13:22,529 INFO L225 Difference]: With dead ends: 438 [2020-09-25 05:13:22,530 INFO L226 Difference]: Without dead ends: 315 [2020-09-25 05:13:22,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:13:22,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-09-25 05:13:22,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 264. [2020-09-25 05:13:22,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-09-25 05:13:22,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 288 transitions. [2020-09-25 05:13:22,628 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 288 transitions. Word has length 149 [2020-09-25 05:13:22,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:13:22,631 INFO L479 AbstractCegarLoop]: Abstraction has 264 states and 288 transitions. [2020-09-25 05:13:22,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:13:22,631 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 288 transitions. [2020-09-25 05:13:22,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-25 05:13:22,633 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:13:22,633 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] [2020-09-25 05:13:22,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:13:22,634 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:13:22,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:13:22,634 INFO L82 PathProgramCache]: Analyzing trace with hash 603003046, now seen corresponding path program 1 times [2020-09-25 05:13:22,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:13:22,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [25378980] [2020-09-25 05:13:22,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:13:22,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:13:22,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:23,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:24,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:25,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:26,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:27,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:13:27,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-09-25 05:13:27,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:13:27,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 05:13:27,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:13:27,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:13:27,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:13:27,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-09-25 05:13:27,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 05:13:27,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:13:28,100 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 05:13:28,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:13:28,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:13:28,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:28,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:13:28,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 05:13:28,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:13:28,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-09-25 05:13:28,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:13:28,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:13:28,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:13:28,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:13:28,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 05:13:28,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:13:28,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 05:13:28,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:13:28,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:28,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:13:28,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:13:28,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:13:28,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:13:28,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:13:28,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:13:28,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:13:28,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:13:28,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 05:13:28,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:13:28,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 05:13:28,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:13:28,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:28,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:13:28,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:13:28,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:13:28,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:13:28,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:13:28,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:13:28,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:13:28,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:13:28,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 05:13:28,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:13:28,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 05:13:28,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:13:28,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:28,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:13:28,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:13:28,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:13:28,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:13:28,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:13:28,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:13:28,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:13:28,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:13:28,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:13:28,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:13:28,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 05:13:28,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:13:28,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:28,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:13:28,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:13:28,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:13:28,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:13:28,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:13:28,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:13:28,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:13:28,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:13:28,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 05:13:28,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:13:28,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 05:13:28,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:13:28,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:28,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:13:28,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 05:13:28,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:13:28,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:13:28,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:13:28,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:13:28,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:13:28,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:13:28,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 05:13:28,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:13:28,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-25 05:13:28,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:13:28,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:28,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:13:28,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:13:28,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:13:28,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:13:28,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:13:28,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:13:28,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:13:28,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 05:13:28,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:13:28,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:13:28,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-25 05:13:28,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:13:28,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:28,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:13:28,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:13:28,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:13:28,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:13:28,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:13:28,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:13:28,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:13:28,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 05:13:28,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:13:28,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:13:28,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:13:28,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [25378980] [2020-09-25 05:13:28,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:13:28,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 05:13:28,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113464181] [2020-09-25 05:13:28,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:13:28,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:13:28,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:13:28,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:13:28,536 INFO L87 Difference]: Start difference. First operand 264 states and 288 transitions. Second operand 5 states. [2020-09-25 05:13:29,070 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-25 05:13:31,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:13:31,108 INFO L93 Difference]: Finished difference Result 626 states and 728 transitions. [2020-09-25 05:13:31,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 05:13:31,108 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2020-09-25 05:13:31,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:13:31,115 INFO L225 Difference]: With dead ends: 626 [2020-09-25 05:13:31,115 INFO L226 Difference]: Without dead ends: 477 [2020-09-25 05:13:31,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:13:31,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2020-09-25 05:13:31,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 407. [2020-09-25 05:13:31,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-09-25 05:13:31,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 456 transitions. [2020-09-25 05:13:31,212 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 456 transitions. Word has length 158 [2020-09-25 05:13:31,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:13:31,214 INFO L479 AbstractCegarLoop]: Abstraction has 407 states and 456 transitions. [2020-09-25 05:13:31,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:13:31,214 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 456 transitions. [2020-09-25 05:13:31,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 05:13:31,217 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:13:31,217 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:13:31,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:13:31,217 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:13:31,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:13:31,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1286470438, now seen corresponding path program 1 times [2020-09-25 05:13:31,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:13:31,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1366054550] [2020-09-25 05:13:31,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:13:31,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:13:31,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:32,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:32,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:33,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:35,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:36,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:13:36,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-25 05:13:36,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:13:36,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 05:13:36,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:13:36,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:13:36,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:13:36,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-09-25 05:13:36,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 05:13:36,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:13:36,579 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 05:13:36,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:13:36,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:13:36,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:36,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:13:36,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 05:13:36,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:13:36,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-25 05:13:36,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:13:36,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:13:36,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:13:36,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:13:36,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:13:36,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:13:36,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 05:13:36,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:13:36,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:36,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:13:36,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:13:36,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:13:36,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:13:36,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:13:36,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:13:36,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:13:36,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:13:36,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:13:36,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:13:36,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 05:13:36,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:13:36,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:36,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:13:36,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:13:36,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:13:36,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:13:36,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:13:36,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:13:36,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:13:36,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:13:36,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:13:36,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:13:36,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 05:13:36,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:13:36,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:36,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:13:36,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:13:36,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:13:36,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:13:36,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:13:36,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:13:36,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:13:36,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:13:36,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:13:36,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:13:36,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 05:13:36,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:13:36,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:36,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:13:36,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:13:36,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:13:36,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:13:36,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:13:36,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:13:36,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:13:36,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:13:36,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:13:36,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:13:36,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 05:13:36,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:13:36,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:36,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:13:36,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 05:13:36,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:13:36,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:13:36,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:13:36,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:13:36,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:13:36,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:13:36,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 05:13:36,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:13:36,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-25 05:13:36,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:13:36,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:36,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:13:36,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 05:13:36,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:13:36,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:13:36,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:13:36,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:13:36,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:13:36,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:13:36,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 05:13:36,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:13:36,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-25 05:13:36,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:13:36,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:36,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:13:36,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:13:36,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:13:36,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:13:36,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:13:36,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:13:36,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:13:36,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:13:36,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:13:36,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:13:36,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-09-25 05:13:36,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:13:36,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:36,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:13:36,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:13:36,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:13:36,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:13:36,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:13:36,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:13:36,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:13:36,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:13:36,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:13:36,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:13:36,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:13:36,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1366054550] [2020-09-25 05:13:36,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:13:36,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 05:13:36,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096349225] [2020-09-25 05:13:36,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:13:36,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:13:36,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:13:36,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:13:36,897 INFO L87 Difference]: Start difference. First operand 407 states and 456 transitions. Second operand 6 states. [2020-09-25 05:13:37,671 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-25 05:13:40,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:13:40,504 INFO L93 Difference]: Finished difference Result 911 states and 1122 transitions. [2020-09-25 05:13:40,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:13:40,505 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 167 [2020-09-25 05:13:40,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:13:40,511 INFO L225 Difference]: With dead ends: 911 [2020-09-25 05:13:40,511 INFO L226 Difference]: Without dead ends: 908 [2020-09-25 05:13:40,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:13:40,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2020-09-25 05:13:40,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 702. [2020-09-25 05:13:40,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2020-09-25 05:13:40,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 803 transitions. [2020-09-25 05:13:40,624 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 803 transitions. Word has length 167 [2020-09-25 05:13:40,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:13:40,624 INFO L479 AbstractCegarLoop]: Abstraction has 702 states and 803 transitions. [2020-09-25 05:13:40,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:13:40,625 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 803 transitions. [2020-09-25 05:13:40,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-09-25 05:13:40,629 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:13:40,629 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:13:40,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:13:40,630 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:13:40,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:13:40,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1927819356, now seen corresponding path program 1 times [2020-09-25 05:13:40,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:13:40,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [723071660] [2020-09-25 05:13:40,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:13:40,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:13:40,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:40,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:41,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:41,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:44,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:45,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:13:45,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-09-25 05:13:45,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:13:45,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 05:13:45,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:13:45,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:13:45,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:13:45,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-09-25 05:13:45,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 05:13:45,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:13:46,046 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 05:13:46,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:13:46,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:13:46,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:46,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:13:46,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 05:13:46,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:13:46,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 05:13:46,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:13:46,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:13:46,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:13:46,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:13:46,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:13:46,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:13:46,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 05:13:46,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:13:46,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:46,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:13:46,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:13:46,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:13:46,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:13:46,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:13:46,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:13:46,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:13:46,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:13:46,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:13:46,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:13:46,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 05:13:46,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:13:46,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:46,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:13:46,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:13:46,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:13:46,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:13:46,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:13:46,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:13:46,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:13:46,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:13:46,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:13:46,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:13:46,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 05:13:46,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:13:46,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:46,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:13:46,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:13:46,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:13:46,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:13:46,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:13:46,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:13:46,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:13:46,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:13:46,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:13:46,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:13:46,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 05:13:46,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:13:46,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:46,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:13:46,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:13:46,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:13:46,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:13:46,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:13:46,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:13:46,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:13:46,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:13:46,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:13:46,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:13:46,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 05:13:46,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:13:46,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:46,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:13:46,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 05:13:46,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:13:46,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:13:46,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:13:46,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:13:46,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:13:46,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:13:46,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:13:46,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:13:46,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-25 05:13:46,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:13:46,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:46,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:13:46,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 05:13:46,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:13:46,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:13:46,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:13:46,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:13:46,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:13:46,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:13:46,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 05:13:46,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:13:46,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-09-25 05:13:46,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:13:46,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:46,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:46,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:13:46,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 05:13:46,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:13:46,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 05:13:46,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:13:46,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:13:46,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:13:46,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:13:46,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 05:13:46,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:13:46,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 05:13:46,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:13:46,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:46,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:13:46,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 05:13:46,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:13:46,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 05:13:46,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:13:46,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:13:46,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:13:46,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:13:46,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 05:13:46,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:13:46,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 05:13:46,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:13:46,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:46,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:13:46,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:13:46,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:13:46,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:13:46,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:13:46,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:13:46,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:13:46,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:13:46,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:13:46,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:13:46,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 05:13:46,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:13:46,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:46,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:13:46,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:13:46,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:13:46,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:13:46,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:13:46,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:13:46,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:13:46,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:13:46,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 05:13:46,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:13:46,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-09-25 05:13:46,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:13:46,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:46,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:13:46,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:13:46,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:13:46,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:13:46,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:13:46,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:13:46,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:13:46,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 05:13:46,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:13:46,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:13:46,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-09-25 05:13:46,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:13:46,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:13:46,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:13:46,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:13:46,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:13:46,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:13:46,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:13:46,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:13:46,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:13:46,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 05:13:46,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:13:46,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:13:46,643 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 31 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 05:13:46,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [723071660] [2020-09-25 05:13:46,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:13:46,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 05:13:46,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155854313] [2020-09-25 05:13:46,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 05:13:46,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:13:46,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 05:13:46,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-09-25 05:13:46,645 INFO L87 Difference]: Start difference. First operand 702 states and 803 transitions. Second operand 14 states. [2020-09-25 05:13:47,236 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 189