/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=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product57.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:27:49,103 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:27:49,107 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:27:49,133 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:27:49,133 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:27:49,134 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:27:49,136 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:27:49,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:27:49,139 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:27:49,140 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:27:49,141 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:27:49,142 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:27:49,142 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:27:49,143 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:27:49,144 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:27:49,145 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:27:49,146 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:27:49,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:27:49,148 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:27:49,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:27:49,152 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:27:49,153 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:27:49,154 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:27:49,155 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:27:49,157 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:27:49,158 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:27:49,158 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:27:49,159 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:27:49,159 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:27:49,160 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:27:49,160 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:27:49,161 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:27:49,162 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:27:49,162 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:27:49,163 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:27:49,164 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:27:49,164 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:27:49,164 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:27:49,165 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:27:49,165 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:27:49,166 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:27:49,167 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 07:27:49,191 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:27:49,191 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:27:49,192 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:27:49,193 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:27:49,193 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:27:49,193 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:27:49,193 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:27:49,194 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:27:49,194 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:27:49,194 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:27:49,194 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:27:49,194 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:27:49,195 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:27:49,195 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:27:49,195 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:27:49,195 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:27:49,195 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:27:49,196 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:27:49,196 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:27:49,196 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:27:49,196 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:27:49,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:27:49,197 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:27:49,197 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:27:49,197 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:27:49,197 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:27:49,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:27:49,198 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:27:49,198 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:27:49,198 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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;log-additional-information=true; [2020-09-25 07:27:49,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:27:49,720 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:27:49,725 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:27:49,727 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:27:49,729 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:27:49,730 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product57.cil.c [2020-09-25 07:27:49,809 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/57b5f39e2/46a2f2d93b9c4402a0e099b74e4555e1/FLAG830a5e99a [2020-09-25 07:27:50,437 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:27:50,438 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product57.cil.c [2020-09-25 07:27:50,454 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/57b5f39e2/46a2f2d93b9c4402a0e099b74e4555e1/FLAG830a5e99a [2020-09-25 07:27:50,674 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/57b5f39e2/46a2f2d93b9c4402a0e099b74e4555e1 [2020-09-25 07:27:50,687 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:27:50,693 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:27:50,694 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:27:50,694 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:27:50,699 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:27:50,700 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:27:50" (1/1) ... [2020-09-25 07:27:50,704 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53926226 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:27:50, skipping insertion in model container [2020-09-25 07:27:50,704 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:27:50" (1/1) ... [2020-09-25 07:27:50,713 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:27:50,762 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:27:51,207 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:27:51,223 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:27:51,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:27:51,355 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:27:51,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:27:51 WrapperNode [2020-09-25 07:27:51,355 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:27:51,356 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:27:51,357 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:27:51,357 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:27:51,375 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:27:51" (1/1) ... [2020-09-25 07:27:51,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:27:51" (1/1) ... [2020-09-25 07:27:51,398 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:27:51" (1/1) ... [2020-09-25 07:27:51,398 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:27:51" (1/1) ... [2020-09-25 07:27:51,430 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:27:51" (1/1) ... [2020-09-25 07:27:51,454 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:27:51" (1/1) ... [2020-09-25 07:27:51,463 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:27:51" (1/1) ... [2020-09-25 07:27:51,477 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:27:51,479 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:27:51,479 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:27:51,479 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:27:51,480 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:27:51" (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 07:27:51,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:27:51,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:27:51,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-25 07:27:51,557 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-09-25 07:27:51,557 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-25 07:27:51,557 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-25 07:27:51,557 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-25 07:27:51,557 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-25 07:27:51,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-25 07:27:51,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-25 07:27:51,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-25 07:27:51,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-25 07:27:51,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-25 07:27:51,559 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-25 07:27:51,559 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-25 07:27:51,559 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-25 07:27:51,559 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-25 07:27:51,559 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-25 07:27:51,560 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-25 07:27:51,560 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-09-25 07:27:51,560 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-25 07:27:51,560 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-25 07:27:51,560 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-25 07:27:51,561 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-25 07:27:51,561 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-25 07:27:51,561 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-25 07:27:51,561 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-25 07:27:51,561 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-25 07:27:51,561 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-25 07:27:51,562 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-25 07:27:51,562 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-25 07:27:51,562 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:27:51,562 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-25 07:27:51,562 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-25 07:27:51,562 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-25 07:27:51,563 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-25 07:27:51,563 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-25 07:27:51,563 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-25 07:27:51,563 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-25 07:27:51,563 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-25 07:27:51,563 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-25 07:27:51,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:27:51,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:27:51,564 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-25 07:27:51,564 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-25 07:27:51,564 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-25 07:27:51,565 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-25 07:27:51,565 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-09-25 07:27:51,565 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-25 07:27:51,565 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-25 07:27:51,565 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-25 07:27:51,566 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-25 07:27:51,566 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-25 07:27:51,566 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 07:27:51,566 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 07:27:51,566 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-25 07:27:51,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 07:27:51,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 07:27:51,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 07:27:51,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 07:27:51,567 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-25 07:27:51,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 07:27:51,567 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-25 07:27:51,568 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-25 07:27:51,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 07:27:51,568 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-25 07:27:51,568 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-25 07:27:51,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 07:27:51,569 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-25 07:27:51,569 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-25 07:27:51,569 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-25 07:27:51,569 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-25 07:27:51,569 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-25 07:27:51,569 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-25 07:27:51,570 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-25 07:27:51,570 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-25 07:27:51,570 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-25 07:27:51,570 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-25 07:27:51,570 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-25 07:27:51,570 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-25 07:27:51,570 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-25 07:27:51,571 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-25 07:27:51,571 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-25 07:27:51,571 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-25 07:27:51,571 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-25 07:27:51,571 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-25 07:27:51,572 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-09-25 07:27:51,572 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-25 07:27:51,572 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-25 07:27:51,572 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-25 07:27:51,572 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-25 07:27:51,572 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:27:51,572 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-25 07:27:51,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:27:51,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 07:27:51,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:27:52,778 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:27:52,779 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-25 07:27:52,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:27:52 BoogieIcfgContainer [2020-09-25 07:27:52,793 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:27:52,796 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:27:52,796 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:27:52,799 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:27:52,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:27:50" (1/3) ... [2020-09-25 07:27:52,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b046a94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:27:52, skipping insertion in model container [2020-09-25 07:27:52,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:27:51" (2/3) ... [2020-09-25 07:27:52,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b046a94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:27:52, skipping insertion in model container [2020-09-25 07:27:52,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:27:52" (3/3) ... [2020-09-25 07:27:52,804 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product57.cil.c [2020-09-25 07:27:52,816 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:27:52,830 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:27:52,853 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:27:52,897 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:27:52,898 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:27:52,898 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:27:52,898 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:27:52,898 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:27:52,899 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:27:52,899 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:27:52,900 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:27:52,946 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states. [2020-09-25 07:27:52,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 07:27:52,975 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:27:52,976 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:27:52,977 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:27:52,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:27:52,986 INFO L82 PathProgramCache]: Analyzing trace with hash 324352486, now seen corresponding path program 1 times [2020-09-25 07:27:52,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:27:52,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1421315556] [2020-09-25 07:27:52,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:27:53,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:27:53,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:27:53,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:27:54,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:27:55,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:27:55,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:27:58,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:27:58,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 07:27:58,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:27:58,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 07:27:58,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:27:58,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:27:58,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:27:58,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-25 07:27:58,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:27:58,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 16 [2020-09-25 07:27:59,053 WARN L193 SmtUtils]: Spent 492.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 07:27:59,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:27:59,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:27:59,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:27:59,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:27:59,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:27:59,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:27:59,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-25 07:27:59,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:27:59,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:27:59,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:27:59,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:27:59,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:27:59,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:27:59,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 07:27:59,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:27:59,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:27:59,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:27:59,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:27:59,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:27:59,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:27:59,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:27:59,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:27:59,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:27:59,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:27:59,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:27:59,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:27:59,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 07:27:59,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:27:59,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:27:59,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:27:59,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:27:59,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:27:59,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:27:59,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:27:59,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:27:59,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:27:59,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:27:59,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:27:59,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:27:59,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 07:27:59,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:27:59,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:27:59,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:27:59,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:27:59,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:27:59,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 07:27:59,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:27:59,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:27:59,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:27:59,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:27:59,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:27:59,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:27:59,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 07:27:59,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:27:59,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:27:59,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:27:59,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:27:59,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:27:59,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 07:27:59,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:27:59,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:27:59,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:27:59,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:27:59,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:27:59,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:27:59,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-25 07:27:59,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:27:59,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:27:59,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:27:59,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:27:59,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:27:59,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:27:59,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:27:59,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:27:59,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:27:59,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 07:27:59,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:27:59,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:27:59,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-25 07:27:59,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:27:59,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:27:59,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:27:59,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:27:59,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:27:59,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:27:59,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:27:59,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:27:59,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:27:59,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 07:27:59,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:27:59,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:27:59,343 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 07:27:59,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1421315556] [2020-09-25 07:27:59,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:27:59,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 07:27:59,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742136560] [2020-09-25 07:27:59,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 07:27:59,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:27:59,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 07:27:59,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:27:59,376 INFO L87 Difference]: Start difference. First operand 329 states. Second operand 3 states. [2020-09-25 07:28:00,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:28:00,880 INFO L93 Difference]: Finished difference Result 525 states and 620 transitions. [2020-09-25 07:28:00,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 07:28:00,882 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-09-25 07:28:00,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:28:00,904 INFO L225 Difference]: With dead ends: 525 [2020-09-25 07:28:00,905 INFO L226 Difference]: Without dead ends: 321 [2020-09-25 07:28:00,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:28:00,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-09-25 07:28:01,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 278. [2020-09-25 07:28:01,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-09-25 07:28:01,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 302 transitions. [2020-09-25 07:28:01,066 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 302 transitions. Word has length 142 [2020-09-25 07:28:01,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:28:01,067 INFO L479 AbstractCegarLoop]: Abstraction has 278 states and 302 transitions. [2020-09-25 07:28:01,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 07:28:01,068 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 302 transitions. [2020-09-25 07:28:01,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-25 07:28:01,081 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:28:01,081 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] [2020-09-25 07:28:01,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:28:01,082 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:28:01,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:28:01,086 INFO L82 PathProgramCache]: Analyzing trace with hash 173272106, now seen corresponding path program 1 times [2020-09-25 07:28:01,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:28:01,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2100947727] [2020-09-25 07:28:01,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:28:01,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:28:01,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:01,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:01,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:02,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:02,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:06,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:28:06,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 07:28:06,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:28:06,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 07:28:06,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:28:06,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:28:06,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:28:06,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-25 07:28:06,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 07:28:06,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:28:06,523 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 07:28:06,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:28:06,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:28:06,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:06,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:28:06,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:28:06,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:28:06,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-09-25 07:28:06,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:28:06,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:28:06,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:28:06,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:28:06,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 07:28:06,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:28:06,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 07:28:06,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:28:06,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:06,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:28:06,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:28:06,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:28:06,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 07:28:06,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:28:06,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:28:06,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:28:06,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:28:06,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 07:28:06,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:28:06,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 07:28:06,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:28:06,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:06,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:28:06,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:28:06,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:28:06,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 07:28:06,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:28:06,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:28:06,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:28:06,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:28:06,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 07:28:06,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:28:06,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 07:28:06,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:28:06,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:06,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:28:06,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:28:06,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:28:06,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 07:28:06,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:28:06,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:28:06,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:28:06,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:28:06,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:28:06,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:28:06,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 07:28:06,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:28:06,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:06,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:28:06,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:28:06,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:28:06,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:28:06,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:28:06,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:28:06,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:28:06,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:28:06,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 07:28:06,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:28:06,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-25 07:28:06,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:28:06,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:06,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:28:06,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:28:06,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:28:06,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:28:06,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:28:06,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:28:06,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:28:06,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 07:28:06,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:28:06,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:28:06,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-25 07:28:06,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:28:06,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:06,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:28:06,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:28:06,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:28:06,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:28:06,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:28:06,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:28:06,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:28:06,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 07:28:06,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:28:06,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:28:06,981 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 07:28:06,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2100947727] [2020-09-25 07:28:06,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:28:06,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:28:06,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147664858] [2020-09-25 07:28:06,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:28:06,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:28:06,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:28:06,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:28:06,988 INFO L87 Difference]: Start difference. First operand 278 states and 302 transitions. Second operand 4 states. [2020-09-25 07:28:07,504 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 07:28:08,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:28:08,542 INFO L93 Difference]: Finished difference Result 489 states and 561 transitions. [2020-09-25 07:28:08,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:28:08,543 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-09-25 07:28:08,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:28:08,547 INFO L225 Difference]: With dead ends: 489 [2020-09-25 07:28:08,547 INFO L226 Difference]: Without dead ends: 321 [2020-09-25 07:28:08,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:28:08,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-09-25 07:28:08,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 278. [2020-09-25 07:28:08,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-09-25 07:28:08,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 301 transitions. [2020-09-25 07:28:08,626 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 301 transitions. Word has length 143 [2020-09-25 07:28:08,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:28:08,627 INFO L479 AbstractCegarLoop]: Abstraction has 278 states and 301 transitions. [2020-09-25 07:28:08,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:28:08,627 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 301 transitions. [2020-09-25 07:28:08,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 07:28:08,630 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:28:08,630 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] [2020-09-25 07:28:08,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:28:08,630 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:28:08,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:28:08,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1427031856, now seen corresponding path program 1 times [2020-09-25 07:28:08,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:28:08,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [686962701] [2020-09-25 07:28:08,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:28:08,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:28:08,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:08,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:08,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:09,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:13,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:28:13,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-09-25 07:28:13,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:28:13,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-09-25 07:28:13,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:28:13,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:28:13,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:28:13,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-25 07:28:13,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 07:28:13,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:28:14,070 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 07:28:14,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:28:14,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:28:14,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:14,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:28:14,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:28:14,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:28:14,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-25 07:28:14,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:28:14,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:28:14,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:28:14,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:28:14,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:28:14,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:28:14,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 07:28:14,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:28:14,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:14,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:28:14,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:28:14,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:28:14,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:28:14,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:28:14,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:28:14,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:28:14,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:28:14,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:28:14,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:28:14,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 07:28:14,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:28:14,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:14,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:28:14,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:28:14,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:28:14,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:28:14,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:28:14,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:28:14,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:28:14,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:28:14,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:28:14,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:28:14,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 07:28:14,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:28:14,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:14,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:28:14,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:28:14,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:28:14,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 07:28:14,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:28:14,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:28:14,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:28:14,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:28:14,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:28:14,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:28:14,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 07:28:14,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:28:14,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:14,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:28:14,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:28:14,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:28:14,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:28:14,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:28:14,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:28:14,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:28:14,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:28:14,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:28:14,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:28:14,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-25 07:28:14,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:28:14,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:14,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:14,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:28:14,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 07:28:14,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:28:14,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 07:28:14,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:28:14,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:28:14,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:28:14,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:28:14,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:28:14,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:28:14,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:28:14,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:28:14,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:14,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:28:14,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:28:14,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:28:14,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 07:28:14,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:28:14,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:28:14,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:28:14,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:28:14,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:28:14,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:28:14,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:28:14,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:28:14,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:14,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:28:14,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:28:14,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:28:14,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:28:14,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:28:14,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:28:14,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:28:14,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:28:14,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:28:14,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:28:14,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-25 07:28:14,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:28:14,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:14,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:28:14,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:28:14,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:28:14,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:28:14,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:28:14,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:28:14,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:28:14,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 07:28:14,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:28:14,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:28:14,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-25 07:28:14,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:28:14,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:14,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:28:14,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:28:14,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:28:14,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:28:14,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:28:14,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:28:14,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:28:14,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 07:28:14,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:28:14,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:28:14,333 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 07:28:14,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [686962701] [2020-09-25 07:28:14,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:28:14,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 07:28:14,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880304498] [2020-09-25 07:28:14,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:28:14,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:28:14,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:28:14,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:28:14,336 INFO L87 Difference]: Start difference. First operand 278 states and 301 transitions. Second operand 5 states. [2020-09-25 07:28:15,179 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 07:28:16,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:28:16,616 INFO L93 Difference]: Finished difference Result 466 states and 529 transitions. [2020-09-25 07:28:16,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 07:28:16,617 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-09-25 07:28:16,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:28:16,622 INFO L225 Difference]: With dead ends: 466 [2020-09-25 07:28:16,624 INFO L226 Difference]: Without dead ends: 328 [2020-09-25 07:28:16,625 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:28:16,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2020-09-25 07:28:16,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 268. [2020-09-25 07:28:16,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-09-25 07:28:16,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 288 transitions. [2020-09-25 07:28:16,684 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 288 transitions. Word has length 156 [2020-09-25 07:28:16,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:28:16,686 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 288 transitions. [2020-09-25 07:28:16,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:28:16,686 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 288 transitions. [2020-09-25 07:28:16,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 07:28:16,689 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:28:16,690 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] [2020-09-25 07:28:16,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:28:16,690 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:28:16,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:28:16,691 INFO L82 PathProgramCache]: Analyzing trace with hash 2053095868, now seen corresponding path program 1 times [2020-09-25 07:28:16,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:28:16,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1713979622] [2020-09-25 07:28:16,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:28:16,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:28:16,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:16,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:17,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:19,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:20,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:20,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:20,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:21,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:28:21,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-25 07:28:21,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:28:21,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 07:28:21,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:28:21,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:28:21,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:28:21,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-09-25 07:28:21,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 07:28:21,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:28:22,085 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 07:28:22,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:28:22,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:28:22,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:22,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:28:22,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:28:22,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:28:22,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-09-25 07:28:22,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:28:22,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:28:22,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:28:22,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:28:22,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:28:22,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:28:22,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 07:28:22,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:28:22,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:22,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:28:22,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:28:22,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:28:22,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:28:22,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:28:22,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:28:22,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:28:22,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:28:22,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:28:22,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:28:22,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 07:28:22,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:28:22,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:22,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:28:22,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:28:22,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:28:22,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:28:22,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:28:22,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:28:22,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:28:22,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:28:22,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:28:22,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:28:22,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 07:28:22,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:28:22,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:22,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:28:22,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:28:22,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:28:22,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 07:28:22,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:28:22,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:28:22,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:28:22,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:28:22,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:28:22,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:28:22,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 07:28:22,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:28:22,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:22,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:28:22,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:28:22,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:28:22,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:28:22,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:28:22,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:28:22,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:28:22,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:28:22,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:28:22,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:28:22,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-25 07:28:22,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:28:22,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:22,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:22,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:28:22,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 07:28:22,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:28:22,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 07:28:22,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:28:22,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:28:22,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:28:22,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:28:22,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 07:28:22,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:28:22,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:28:22,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:28:22,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:22,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:28:22,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:28:22,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:28:22,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 07:28:22,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:28:22,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:28:22,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:28:22,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:28:22,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 07:28:22,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:28:22,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:28:22,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:28:22,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:22,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:28:22,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:28:22,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:28:22,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:28:22,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:28:22,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:28:22,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:28:22,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:28:22,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 07:28:22,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 07:28:22,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-09-25 07:28:22,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:28:22,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:22,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:28:22,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:28:22,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:28:22,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:28:22,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:28:22,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:28:22,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:28:22,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 07:28:22,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:28:22,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 07:28:22,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-09-25 07:28:22,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:28:22,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:22,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:28:22,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:28:22,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:28:22,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 07:28:22,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:28:22,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:28:22,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:28:22,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 07:28:22,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:28:22,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:28:22,563 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 07:28:22,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1713979622] [2020-09-25 07:28:22,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:28:22,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:28:22,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666315551] [2020-09-25 07:28:22,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:28:22,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:28:22,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:28:22,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:28:22,568 INFO L87 Difference]: Start difference. First operand 268 states and 288 transitions. Second operand 7 states. [2020-09-25 07:28:23,081 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 07:28:24,451 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 07:28:25,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:28:25,408 INFO L93 Difference]: Finished difference Result 593 states and 675 transitions. [2020-09-25 07:28:25,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 07:28:25,409 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 165 [2020-09-25 07:28:25,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:28:25,417 INFO L225 Difference]: With dead ends: 593 [2020-09-25 07:28:25,418 INFO L226 Difference]: Without dead ends: 435 [2020-09-25 07:28:25,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:28:25,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2020-09-25 07:28:25,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 376. [2020-09-25 07:28:25,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-09-25 07:28:25,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 405 transitions. [2020-09-25 07:28:25,512 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 405 transitions. Word has length 165 [2020-09-25 07:28:25,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:28:25,512 INFO L479 AbstractCegarLoop]: Abstraction has 376 states and 405 transitions. [2020-09-25 07:28:25,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:28:25,513 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 405 transitions. [2020-09-25 07:28:25,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-25 07:28:25,517 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:28:25,518 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:28:25,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:28:25,518 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:28:25,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:28:25,519 INFO L82 PathProgramCache]: Analyzing trace with hash 2027625623, now seen corresponding path program 1 times [2020-09-25 07:28:25,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:28:25,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [793734569] [2020-09-25 07:28:25,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:28:25,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:28:25,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:26,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:26,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:27,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:28,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:30,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:28:30,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-09-25 07:28:30,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:28:30,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 07:28:30,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:28:30,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:28:30,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 07:28:30,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-09-25 07:28:30,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 07:28:30,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:28:30,975 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 07:28:30,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:28:30,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:28:30,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:31,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:28:31,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:28:31,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:28:31,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-25 07:28:31,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:28:31,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:28:31,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:28:31,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:28:31,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:28:31,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:28:31,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 07:28:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:28:31,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:31,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:28:31,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:28:31,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:28:31,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:28:31,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:28:31,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:28:31,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:28:31,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:28:31,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:28:31,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:28:31,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 07:28:31,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:28:31,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:31,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:28:31,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:28:31,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:28:31,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:28:31,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:28:31,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:28:31,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:28:31,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:28:31,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:28:31,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:28:31,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 07:28:31,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:28:31,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:31,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:28:31,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:28:31,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:28:31,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:28:31,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:28:31,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:28:31,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:28:31,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:28:31,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:28:31,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:28:31,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 07:28:31,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:28:31,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:31,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:28:31,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:28:31,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:28:31,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:28:31,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:28:31,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:28:31,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:28:31,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:28:31,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:28:31,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:28:31,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-25 07:28:31,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:28:31,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:31,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:31,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:31,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:28:31,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-25 07:28:31,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:28:31,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-09-25 07:28:31,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:28:31,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:28:31,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:28:31,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:28:31,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:28:31,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:28:31,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:28:31,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:28:31,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:31,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:28:31,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 07:28:31,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:28:31,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 07:28:31,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:28:31,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:28:31,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:28:31,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:28:31,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 07:28:31,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:28:31,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:28:31,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:28:31,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:31,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:28:31,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:28:31,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:28:31,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 07:28:31,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:28:31,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:28:31,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:28:31,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:28:31,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 07:28:31,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:28:31,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:28:31,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:28:31,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:31,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:28:31,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:28:31,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:28:31,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:28:31,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:28:31,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:28:31,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:28:31,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:28:31,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:28:31,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:28:31,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 07:28:31,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:28:31,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:31,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:28:31,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:28:31,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:28:31,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:28:31,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:28:31,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:28:31,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:28:31,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:28:31,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 07:28:31,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:28:31,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-09-25 07:28:31,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:28:31,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:31,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:28:31,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:28:31,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:28:31,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 07:28:31,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:28:31,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:28:31,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:28:31,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:28:31,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:28:31,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:28:31,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-09-25 07:28:31,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:28:31,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:28:31,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:28:31,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:28:31,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:28:31,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 07:28:31,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:28:31,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:28:31,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:28:31,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:28:31,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:28:31,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:28:31,463 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 07:28:31,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [793734569] [2020-09-25 07:28:31,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:28:31,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 07:28:31,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936542222] [2020-09-25 07:28:31,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 07:28:31,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:28:31,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 07:28:31,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:28:31,466 INFO L87 Difference]: Start difference. First operand 376 states and 405 transitions. Second operand 9 states. [2020-09-25 07:28:31,977 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 07:28:33,648 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 07:28:33,956 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 07:28:34,320 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 190