/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product56.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:16:49,092 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:16:49,097 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:16:49,144 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:16:49,145 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:16:49,153 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:16:49,155 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:16:49,159 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:16:49,161 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:16:49,164 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:16:49,165 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:16:49,167 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:16:49,167 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:16:49,170 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:16:49,172 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:16:49,174 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:16:49,176 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:16:49,177 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:16:49,179 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:16:49,188 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:16:49,190 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:16:49,191 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:16:49,192 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:16:49,193 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:16:49,206 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:16:49,206 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:16:49,206 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:16:49,212 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:16:49,213 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:16:49,217 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:16:49,217 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:16:49,218 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:16:49,222 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:16:49,223 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:16:49,224 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:16:49,226 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:16:49,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:16:49,228 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:16:49,230 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:16:49,232 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:16:49,233 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:16:49,236 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 21:16:49,276 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:16:49,276 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:16:49,277 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:16:49,277 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:16:49,278 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:16:49,278 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:16:49,278 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:16:49,278 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:16:49,279 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:16:49,279 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:16:49,279 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:16:49,279 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:16:49,279 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:16:49,280 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:16:49,280 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:16:49,280 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:16:49,280 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:16:49,280 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:16:49,281 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:16:49,281 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:16:49,281 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:16:49,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:16:49,282 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:16:49,282 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:16:49,282 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:16:49,282 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:16:49,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:16:49,282 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:16:49,283 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:16:49,283 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:16:49,786 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:16:49,812 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:16:49,820 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:16:49,822 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:16:49,822 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:16:49,824 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product56.cil.c [2020-09-24 21:16:49,905 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/34b1ec476/2b02a6502f8e4718a5d3b6b2e6059058/FLAGda5f9aac2 [2020-09-24 21:16:50,465 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:16:50,466 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product56.cil.c [2020-09-24 21:16:50,492 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/34b1ec476/2b02a6502f8e4718a5d3b6b2e6059058/FLAGda5f9aac2 [2020-09-24 21:16:50,745 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/34b1ec476/2b02a6502f8e4718a5d3b6b2e6059058 [2020-09-24 21:16:50,758 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:16:50,763 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:16:50,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:16:50,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:16:50,769 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:16:50,770 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:16:50" (1/1) ... [2020-09-24 21:16:50,776 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51800d17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:16:50, skipping insertion in model container [2020-09-24 21:16:50,776 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:16:50" (1/1) ... [2020-09-24 21:16:50,786 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:16:50,868 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:16:51,269 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:16:51,293 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:16:51,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:16:51,533 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:16:51,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:16:51 WrapperNode [2020-09-24 21:16:51,534 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:16:51,535 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:16:51,535 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:16:51,535 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:16:51,549 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:16:51" (1/1) ... [2020-09-24 21:16:51,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:16:51" (1/1) ... [2020-09-24 21:16:51,571 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:16:51" (1/1) ... [2020-09-24 21:16:51,571 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:16:51" (1/1) ... [2020-09-24 21:16:51,607 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:16:51" (1/1) ... [2020-09-24 21:16:51,619 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:16:51" (1/1) ... [2020-09-24 21:16:51,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:16:51" (1/1) ... [2020-09-24 21:16:51,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:16:51,633 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:16:51,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:16:51,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:16:51,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:16:51" (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 [2020-09-24 21:16:51,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:16:51,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:16:51,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 21:16:51,727 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 21:16:51,727 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 21:16:51,727 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 21:16:51,728 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 21:16:51,728 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 21:16:51,729 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 21:16:51,729 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 21:16:51,729 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 21:16:51,729 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 21:16:51,730 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 21:16:51,730 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-24 21:16:51,730 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 21:16:51,731 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 21:16:51,731 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 21:16:51,732 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 21:16:51,732 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 21:16:51,732 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 21:16:51,732 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-24 21:16:51,733 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-24 21:16:51,733 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-24 21:16:51,733 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-24 21:16:51,734 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 21:16:51,734 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 21:16:51,735 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 21:16:51,735 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 21:16:51,735 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-09-24 21:16:51,735 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 21:16:51,735 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 21:16:51,735 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 21:16:51,736 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 21:16:51,736 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 21:16:51,736 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:16:51,736 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 21:16:51,736 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 21:16:51,736 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 21:16:51,737 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 21:16:51,737 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 21:16:51,737 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 21:16:51,737 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-24 21:16:51,737 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-24 21:16:51,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:16:51,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:16:51,739 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 21:16:51,739 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 21:16:51,739 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 21:16:51,740 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 21:16:51,740 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 21:16:51,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 21:16:51,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 21:16:51,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 21:16:51,741 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 21:16:51,741 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 21:16:51,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 21:16:51,742 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 21:16:51,742 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 21:16:51,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 21:16:51,742 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 21:16:51,742 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 21:16:51,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 21:16:51,743 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 21:16:51,743 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 21:16:51,743 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 21:16:51,743 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-24 21:16:51,743 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-24 21:16:51,744 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 21:16:51,744 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 21:16:51,744 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 21:16:51,745 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 21:16:51,745 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 21:16:51,746 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 21:16:51,747 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-24 21:16:51,747 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-24 21:16:51,747 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 21:16:51,747 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 21:16:51,747 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 21:16:51,748 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 21:16:51,748 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-09-24 21:16:51,748 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 21:16:51,748 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 21:16:51,748 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-24 21:16:51,749 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 21:16:51,749 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-24 21:16:51,749 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-24 21:16:51,749 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 21:16:51,749 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 21:16:51,749 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 21:16:51,750 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 21:16:51,750 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 21:16:51,750 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 21:16:51,750 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 21:16:51,750 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 21:16:51,750 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 21:16:51,751 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:16:51,751 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 21:16:51,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:16:51,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 21:16:51,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:16:52,946 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:16:52,946 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 21:16:52,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:16:52 BoogieIcfgContainer [2020-09-24 21:16:52,954 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:16:52,955 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:16:52,955 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:16:52,959 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:16:52,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:16:50" (1/3) ... [2020-09-24 21:16:52,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d77b8b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:16:52, skipping insertion in model container [2020-09-24 21:16:52,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:16:51" (2/3) ... [2020-09-24 21:16:52,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d77b8b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:16:52, skipping insertion in model container [2020-09-24 21:16:52,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:16:52" (3/3) ... [2020-09-24 21:16:52,963 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product56.cil.c [2020-09-24 21:16:52,975 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:16:52,987 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:16:53,009 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:16:53,041 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:16:53,041 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:16:53,041 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:16:53,041 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:16:53,041 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:16:53,042 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:16:53,042 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:16:53,042 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:16:53,073 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states. [2020-09-24 21:16:53,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-24 21:16:53,092 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:16:53,093 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:16:53,094 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:16:53,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:16:53,102 INFO L82 PathProgramCache]: Analyzing trace with hash 826882234, now seen corresponding path program 1 times [2020-09-24 21:16:53,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:16:53,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [798240407] [2020-09-24 21:16:53,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:16:53,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:16:53,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:53,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:55,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:56,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:58,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:58,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:16:58,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-24 21:16:58,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:16:58,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5097 [2020-09-24 21:16:58,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:16:58,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 21:16:58,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-24 21:16:58,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-24 21:16:58,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-24 21:16:59,110 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 21:16:59,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:16:59,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:16:59,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:59,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:16:59,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:16:59,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:16:59,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 312 [2020-09-24 21:16:59,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:16:59,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:16:59,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:16:59,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:16:59,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:16:59,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 21:16:59,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:16:59,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:59,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:16:59,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:16:59,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:16:59,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:16:59,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:16:59,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:16:59,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:16:59,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:16:59,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:16:59,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 21:16:59,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:16:59,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:59,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:16:59,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:16:59,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:16:59,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:16:59,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:16:59,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:16:59,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:16:59,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:16:59,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:16:59,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 21:16:59,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:16:59,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:59,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:16:59,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:16:59,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:16:59,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 21:16:59,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:16:59,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:16:59,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:16:59,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:16:59,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:16:59,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 21:16:59,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:16:59,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:59,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:16:59,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:16:59,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:16:59,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:16:59,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:16:59,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:16:59,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:16:59,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:16:59,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:16:59,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-24 21:16:59,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:16:59,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:59,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:16:59,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:16:59,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:16:59,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:16:59,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:16:59,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:16:59,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:16:59,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:16:59,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:16:59,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-24 21:16:59,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:16:59,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:16:59,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:16:59,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:16:59,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:16:59,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 21:16:59,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:16:59,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:16:59,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:16:59,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:16:59,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:16:59,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:16:59,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [798240407] [2020-09-24 21:16:59,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:16:59,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 21:16:59,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738798269] [2020-09-24 21:16:59,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 21:16:59,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:16:59,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 21:16:59,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:16:59,820 INFO L87 Difference]: Start difference. First operand 342 states. Second operand 8 states. [2020-09-24 21:17:00,449 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 21:17:01,734 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:17:02,091 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 21:17:02,371 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:17:02,730 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 21:17:03,024 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:17:03,858 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 21:17:04,148 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:17:04,517 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 21:17:06,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:17:06,014 INFO L93 Difference]: Finished difference Result 677 states and 847 transitions. [2020-09-24 21:17:06,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 21:17:06,017 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 142 [2020-09-24 21:17:06,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:17:06,041 INFO L225 Difference]: With dead ends: 677 [2020-09-24 21:17:06,041 INFO L226 Difference]: Without dead ends: 446 [2020-09-24 21:17:06,051 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2020-09-24 21:17:06,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2020-09-24 21:17:06,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 401. [2020-09-24 21:17:06,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2020-09-24 21:17:06,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 462 transitions. [2020-09-24 21:17:06,205 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 462 transitions. Word has length 142 [2020-09-24 21:17:06,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:17:06,206 INFO L479 AbstractCegarLoop]: Abstraction has 401 states and 462 transitions. [2020-09-24 21:17:06,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 21:17:06,206 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 462 transitions. [2020-09-24 21:17:06,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-24 21:17:06,213 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:17:06,214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:17:06,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:17:06,214 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:17:06,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:17:06,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1255055236, now seen corresponding path program 1 times [2020-09-24 21:17:06,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:17:06,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [129016021] [2020-09-24 21:17:06,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:17:06,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:06,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:06,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:11,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:11,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-09-24 21:17:11,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:17:11,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-09-24 21:17:11,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:11,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 21:17:11,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-09-24 21:17:11,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-24 21:17:11,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:17:11,798 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 21:17:11,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:17:11,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:11,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:12,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:12,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:17:12,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:12,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-09-24 21:17:12,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:12,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:17:12,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:17:12,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 21:17:12,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:17:12,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 21:17:12,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:12,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:12,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:12,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:17:12,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:12,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:17:12,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:12,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:17:12,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:17:12,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:17:12,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:17:12,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 21:17:12,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:12,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:12,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:12,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:17:12,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:12,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:17:12,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:12,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:17:12,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:17:12,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:17:12,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:17:12,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 21:17:12,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:12,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:12,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:12,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:17:12,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:12,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:17:12,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:12,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:17:12,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:17:12,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:17:12,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:17:12,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 21:17:12,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:12,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:12,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:12,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:17:12,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:12,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:17:12,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:12,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:17:12,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:17:12,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:17:12,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:17:12,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-24 21:17:12,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:12,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:12,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:12,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 21:17:12,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:12,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:17:12,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:12,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:17:12,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:17:12,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 21:17:12,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:17:12,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-24 21:17:12,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:12,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:12,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:12,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:12,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-24 21:17:12,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:17:12,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-09-24 21:17:12,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:12,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:17:12,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:17:12,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-24 21:17:12,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:17:12,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:17:12,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:12,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:12,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:12,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:12,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 21:17:12,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:17:12,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-24 21:17:12,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:12,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:17:12,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:17:12,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:17:12,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:17:12,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:17:12,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:12,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:12,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:12,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:12,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 21:17:12,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:17:12,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-24 21:17:12,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:12,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:17:12,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:17:12,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:17:12,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:17:12,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:17:12,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:12,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:12,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:12,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:12,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 21:17:12,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:17:12,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-24 21:17:12,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:12,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:17:12,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:17:12,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:17:12,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:17:12,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:17:12,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:12,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:12,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:12,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:17:12,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:12,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:17:12,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:12,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:17:12,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:17:12,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:17:12,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:17:12,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 21:17:12,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:12,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:12,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:12,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 21:17:12,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:12,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:17:12,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:12,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:17:12,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:17:12,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:17:12,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:17:12,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-09-24 21:17:12,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:12,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:12,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:12,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:17:12,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:12,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:17:12,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:12,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:17:12,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:17:12,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:17:12,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:17:12,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-24 21:17:12,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:12,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:12,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:12,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:17:12,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:12,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:17:12,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:12,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:17:12,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:17:12,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:17:12,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:17:12,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:17:12,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [129016021] [2020-09-24 21:17:12,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:17:12,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 21:17:12,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690185254] [2020-09-24 21:17:12,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 21:17:12,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:17:12,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 21:17:12,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:17:12,686 INFO L87 Difference]: Start difference. First operand 401 states and 462 transitions. Second operand 10 states. [2020-09-24 21:17:13,239 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 21:17:14,114 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 21:17:14,490 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 21:17:14,876 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:17:15,290 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 21:17:15,611 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:17:16,301 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 21:17:16,633 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 21:17:17,043 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 21:17:20,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:17:20,342 INFO L93 Difference]: Finished difference Result 1250 states and 1660 transitions. [2020-09-24 21:17:20,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 21:17:20,342 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 199 [2020-09-24 21:17:20,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:17:20,356 INFO L225 Difference]: With dead ends: 1250 [2020-09-24 21:17:20,357 INFO L226 Difference]: Without dead ends: 910 [2020-09-24 21:17:20,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-09-24 21:17:20,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2020-09-24 21:17:20,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 651. [2020-09-24 21:17:20,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651 states. [2020-09-24 21:17:20,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 757 transitions. [2020-09-24 21:17:20,509 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 757 transitions. Word has length 199 [2020-09-24 21:17:20,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:17:20,510 INFO L479 AbstractCegarLoop]: Abstraction has 651 states and 757 transitions. [2020-09-24 21:17:20,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 21:17:20,510 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 757 transitions. [2020-09-24 21:17:20,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-09-24 21:17:20,515 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:17:20,515 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:17:20,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:17:20,516 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:17:20,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:17:20,516 INFO L82 PathProgramCache]: Analyzing trace with hash 515628642, now seen corresponding path program 1 times [2020-09-24 21:17:20,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:17:20,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002735147] [2020-09-24 21:17:20,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:17:20,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:20,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:21,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:21,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-09-24 21:17:21,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:21,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 789 [2020-09-24 21:17:21,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:21,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:17:21,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 187 [2020-09-24 21:17:21,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:17:21,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:17:21,660 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 21:17:21,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:17:21,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:21,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:21,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:21,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:17:21,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:21,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-24 21:17:21,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:21,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:17:21,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:17:21,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:17:21,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:17:21,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 21:17:21,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:21,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:21,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:21,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:17:21,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:21,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:17:21,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:21,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:17:21,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:17:21,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:17:21,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:17:21,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 21:17:21,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:21,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:21,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:21,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:17:21,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:21,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:17:21,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:21,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:17:21,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:17:21,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:17:21,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:17:21,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 21:17:21,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:21,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:21,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:21,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:17:21,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:21,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:17:21,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:21,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:17:21,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:17:21,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:17:21,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:17:21,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 21:17:21,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:21,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:21,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:21,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:17:21,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:21,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:17:21,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:21,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:17:21,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:17:21,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:17:21,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:17:21,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-24 21:17:21,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:21,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:21,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:21,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:17:21,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:21,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:17:21,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:21,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:17:21,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:17:21,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:17:21,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:17:21,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-24 21:17:21,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:21,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:21,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:21,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 21:17:21,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:21,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:17:21,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:21,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:17:21,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:17:21,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:17:21,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:17:21,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-24 21:17:21,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:21,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:21,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:21,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-24 21:17:21,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:21,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-24 21:17:21,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:21,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:17:21,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-24 21:17:21,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:17:21,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:17:21,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:17:21,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:21,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:22,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:22,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 21:17:22,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:22,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-24 21:17:22,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:22,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:17:22,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 21:17:22,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:17:22,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:17:22,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:17:22,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:22,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:22,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:22,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 21:17:22,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:22,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-24 21:17:22,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:22,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:17:22,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 21:17:22,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:17:22,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:17:22,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:17:22,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:22,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:22,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:22,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 21:17:22,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:22,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 21:17:22,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:22,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:17:22,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:17:22,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:17:22,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:17:22,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:17:22,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:22,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:22,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:22,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:17:22,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:22,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:17:22,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:22,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:17:22,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:17:22,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:17:22,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:17:22,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 21:17:22,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:22,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:22,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:22,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 21:17:22,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:22,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:17:22,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:22,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:17:22,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 21:17:22,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:17:22,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:17:22,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-09-24 21:17:22,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:22,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:22,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:22,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:17:22,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:22,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:17:22,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:22,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:17:22,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:17:22,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:17:22,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:17:22,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-09-24 21:17:22,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:22,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:22,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:22,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:17:22,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:22,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:17:22,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:22,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:17:22,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:17:22,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:17:22,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:17:22,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:17:22,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1002735147] [2020-09-24 21:17:22,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:17:22,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 21:17:22,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353710722] [2020-09-24 21:17:22,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 21:17:22,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:17:22,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 21:17:22,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:17:22,274 INFO L87 Difference]: Start difference. First operand 651 states and 757 transitions. Second operand 10 states. [2020-09-24 21:17:23,759 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 21:17:24,093 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 21:17:24,420 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:17:24,791 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 21:17:25,067 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:17:27,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:17:27,201 INFO L93 Difference]: Finished difference Result 1605 states and 2130 transitions. [2020-09-24 21:17:27,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 21:17:27,201 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 204 [2020-09-24 21:17:27,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:17:27,211 INFO L225 Difference]: With dead ends: 1605 [2020-09-24 21:17:27,211 INFO L226 Difference]: Without dead ends: 1064 [2020-09-24 21:17:27,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-09-24 21:17:27,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2020-09-24 21:17:27,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 663. [2020-09-24 21:17:27,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 663 states. [2020-09-24 21:17:27,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 769 transitions. [2020-09-24 21:17:27,309 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 769 transitions. Word has length 204 [2020-09-24 21:17:27,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:17:27,310 INFO L479 AbstractCegarLoop]: Abstraction has 663 states and 769 transitions. [2020-09-24 21:17:27,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 21:17:27,310 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 769 transitions. [2020-09-24 21:17:27,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-09-24 21:17:27,314 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:17:27,314 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:17:27,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:17:27,315 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:17:27,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:17:27,315 INFO L82 PathProgramCache]: Analyzing trace with hash 101997250, now seen corresponding path program 1 times [2020-09-24 21:17:27,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:17:27,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1947577769] [2020-09-24 21:17:27,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:17:27,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:27,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:28,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:28,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-09-24 21:17:28,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:28,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 795 [2020-09-24 21:17:28,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:28,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:17:28,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 195 [2020-09-24 21:17:28,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:17:28,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:17:28,505 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 21:17:28,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:17:28,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:28,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:28,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:28,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:17:28,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:28,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-24 21:17:28,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:28,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:17:28,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:17:28,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:17:28,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:17:28,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 21:17:28,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:28,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:28,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:28,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:17:28,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:28,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:17:28,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:28,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:17:28,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:17:28,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:17:28,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:17:28,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 21:17:28,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:28,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:28,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:28,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:17:28,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:28,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:17:28,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:28,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:17:28,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:17:28,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:17:28,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:17:28,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 21:17:28,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:28,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:28,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:28,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:17:28,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:28,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:17:28,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:28,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:17:28,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:17:28,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:17:28,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:17:28,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 21:17:28,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:28,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:28,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:28,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:17:28,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:28,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:17:28,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:28,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:17:28,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:17:28,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:17:28,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:17:28,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-24 21:17:28,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:28,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:28,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:28,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:17:28,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:28,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:17:28,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:28,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:17:28,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:17:28,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:17:28,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:17:28,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-24 21:17:28,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:28,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:28,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:28,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 21:17:28,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:28,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:17:28,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:28,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:17:28,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:17:28,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:17:28,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:17:28,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-24 21:17:28,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:28,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:28,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:28,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-24 21:17:28,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:28,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-24 21:17:28,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:28,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:17:28,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-24 21:17:28,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:17:28,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:17:28,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:17:28,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:28,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:28,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:28,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 21:17:28,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:28,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-24 21:17:28,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:28,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:17:28,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-24 21:17:28,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:17:28,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:17:28,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:17:28,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:28,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:28,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:28,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 21:17:28,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:28,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-24 21:17:28,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:28,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:17:28,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 21:17:28,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:17:28,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:17:29,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:17:29,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:29,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:29,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:29,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 21:17:29,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:29,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-24 21:17:29,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:29,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:17:29,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:17:29,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 21:17:29,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:17:29,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:17:29,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:29,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:29,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:29,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:17:29,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:29,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:17:29,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:29,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:17:29,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:17:29,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:17:29,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:17:29,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 21:17:29,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:29,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:29,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:29,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 21:17:29,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:29,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:17:29,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:29,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:17:29,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 21:17:29,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:17:29,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:17:29,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-09-24 21:17:29,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:29,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:29,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:29,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:17:29,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:29,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:17:29,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:29,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:17:29,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:17:29,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:17:29,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:17:29,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-09-24 21:17:29,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:29,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:29,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:29,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:17:29,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:29,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:17:29,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:29,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:17:29,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:17:29,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:17:29,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:17:29,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:17:29,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1947577769] [2020-09-24 21:17:29,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:17:29,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 21:17:29,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643759345] [2020-09-24 21:17:29,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 21:17:29,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:17:29,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 21:17:29,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-24 21:17:29,254 INFO L87 Difference]: Start difference. First operand 663 states and 769 transitions. Second operand 11 states. [2020-09-24 21:17:31,087 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:17:31,373 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 21:17:31,673 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-24 21:17:32,064 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:17:32,404 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 21:17:32,749 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 21:17:34,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:17:34,800 INFO L93 Difference]: Finished difference Result 1625 states and 2097 transitions. [2020-09-24 21:17:34,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 21:17:34,801 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 204 [2020-09-24 21:17:34,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:17:34,808 INFO L225 Difference]: With dead ends: 1625 [2020-09-24 21:17:34,808 INFO L226 Difference]: Without dead ends: 1072 [2020-09-24 21:17:34,811 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-09-24 21:17:34,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2020-09-24 21:17:34,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 679. [2020-09-24 21:17:34,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 679 states. [2020-09-24 21:17:34,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 785 transitions. [2020-09-24 21:17:34,907 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 785 transitions. Word has length 204 [2020-09-24 21:17:34,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:17:34,908 INFO L479 AbstractCegarLoop]: Abstraction has 679 states and 785 transitions. [2020-09-24 21:17:34,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 21:17:34,908 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 785 transitions. [2020-09-24 21:17:34,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-09-24 21:17:34,912 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:17:34,912 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:17:34,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:17:34,913 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:17:34,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:17:34,913 INFO L82 PathProgramCache]: Analyzing trace with hash 446110533, now seen corresponding path program 1 times [2020-09-24 21:17:34,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:17:34,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2115057183] [2020-09-24 21:17:34,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:17:34,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:35,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:36,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:36,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-09-24 21:17:36,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:36,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1318 [2020-09-24 21:17:36,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:36,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:17:36,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-09-24 21:17:36,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-24 21:17:36,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:17:36,582 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 21:17:36,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:17:36,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:36,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:36,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:36,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:17:36,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:36,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-09-24 21:17:36,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:36,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:17:36,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:17:36,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 21:17:36,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:17:36,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 21:17:36,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:36,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:36,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:36,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:17:36,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:36,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:17:36,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:36,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:17:36,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:17:36,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:17:36,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:17:36,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 21:17:36,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:36,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:36,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:36,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:17:36,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:36,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:17:36,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:36,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:17:36,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:17:36,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:17:36,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:17:36,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 21:17:36,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:36,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:36,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:36,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:17:36,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:36,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:17:36,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:36,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:17:36,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:17:36,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:17:36,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:17:36,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 21:17:36,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:36,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:36,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:36,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:17:36,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:36,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:17:36,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:36,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:17:36,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:17:36,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:17:36,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:17:36,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-24 21:17:36,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:36,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:36,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:36,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:17:36,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:36,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:17:36,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:36,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:17:36,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:17:36,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:17:36,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:17:36,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-24 21:17:36,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:36,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:36,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:36,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 21:17:36,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:36,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:17:36,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:36,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:17:36,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:17:36,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 21:17:36,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:17:36,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-24 21:17:36,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:36,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:37,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:37,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-24 21:17:37,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:37,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 21:17:37,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:37,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:17:37,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 21:17:37,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 21:17:37,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:17:37,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:17:37,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:37,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:37,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:37,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 21:17:37,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:37,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 21:17:37,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:37,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:17:37,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:17:37,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 21:17:37,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:17:37,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:17:37,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:37,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:37,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:37,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 21:17:37,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:37,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 21:17:37,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:37,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:17:37,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:17:37,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 21:17:37,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:17:37,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:17:37,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:37,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:37,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:37,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 21:17:37,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:37,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 21:17:37,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:37,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:17:37,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:17:37,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:17:37,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:17:37,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:17:37,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:37,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:37,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:37,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:17:37,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:37,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:17:37,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:37,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:17:37,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:17:37,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 21:17:37,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:17:37,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 21:17:37,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:37,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:37,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:37,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 21:17:37,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:37,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:17:37,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:37,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:17:37,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:17:37,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 21:17:37,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:17:37,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-09-24 21:17:37,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:37,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:37,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:37,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:17:37,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:37,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:17:37,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:37,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:17:37,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:17:37,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:17:37,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:17:37,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-09-24 21:17:37,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:17:37,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:17:37,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:17:37,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:17:37,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:17:37,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:17:37,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:17:37,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:17:37,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:17:37,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:17:37,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:17:37,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:17:37,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2115057183] [2020-09-24 21:17:37,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:17:37,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 21:17:37,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868297222] [2020-09-24 21:17:37,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 21:17:37,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:17:37,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 21:17:37,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:17:37,253 INFO L87 Difference]: Start difference. First operand 679 states and 785 transitions. Second operand 8 states. [2020-09-24 21:17:37,887 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 21:17:39,256 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 186