/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=NARROWEST --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_product45.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 01:44:42,584 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 01:44:42,588 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 01:44:42,615 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 01:44:42,615 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 01:44:42,616 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 01:44:42,618 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 01:44:42,620 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 01:44:42,622 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 01:44:42,623 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 01:44:42,624 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 01:44:42,626 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 01:44:42,626 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 01:44:42,627 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 01:44:42,629 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 01:44:42,630 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 01:44:42,631 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 01:44:42,632 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 01:44:42,634 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 01:44:42,636 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 01:44:42,638 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 01:44:42,639 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 01:44:42,641 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 01:44:42,642 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 01:44:42,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 01:44:42,645 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 01:44:42,645 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 01:44:42,646 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 01:44:42,647 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 01:44:42,648 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 01:44:42,648 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 01:44:42,649 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 01:44:42,650 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 01:44:42,651 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 01:44:42,652 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 01:44:42,653 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 01:44:42,654 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 01:44:42,654 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 01:44:42,654 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 01:44:42,655 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 01:44:42,656 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 01:44:42,657 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 01:44:42,704 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 01:44:42,704 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 01:44:42,709 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 01:44:42,709 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 01:44:42,709 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 01:44:42,709 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 01:44:42,710 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 01:44:42,712 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 01:44:42,712 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 01:44:42,712 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 01:44:42,712 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 01:44:42,714 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 01:44:42,714 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 01:44:42,714 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 01:44:42,714 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 01:44:42,714 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 01:44:42,715 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 01:44:42,715 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 01:44:42,716 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 01:44:42,716 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 01:44:42,716 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 01:44:42,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:44:42,716 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 01:44:42,717 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 01:44:42,717 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 01:44:42,717 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 01:44:42,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 01:44:42,717 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 01:44:42,718 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 01:44:42,718 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true; [2020-09-25 01:44:43,190 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 01:44:43,215 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 01:44:43,220 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 01:44:43,222 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 01:44:43,224 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 01:44:43,225 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product45.cil.c [2020-09-25 01:44:43,309 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/479a75084/22c02c4d95fd4a2b96922d5f3da387ec/FLAG51065044c [2020-09-25 01:44:43,924 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 01:44:43,925 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product45.cil.c [2020-09-25 01:44:43,939 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/479a75084/22c02c4d95fd4a2b96922d5f3da387ec/FLAG51065044c [2020-09-25 01:44:44,219 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/479a75084/22c02c4d95fd4a2b96922d5f3da387ec [2020-09-25 01:44:44,232 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 01:44:44,239 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 01:44:44,240 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 01:44:44,240 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 01:44:44,245 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 01:44:44,246 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:44:44" (1/1) ... [2020-09-25 01:44:44,250 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1392f113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:44:44, skipping insertion in model container [2020-09-25 01:44:44,251 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:44:44" (1/1) ... [2020-09-25 01:44:44,260 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 01:44:44,318 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 01:44:44,805 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:44:44,826 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 01:44:44,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:44:44,958 INFO L208 MainTranslator]: Completed translation [2020-09-25 01:44:44,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:44:44 WrapperNode [2020-09-25 01:44:44,959 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 01:44:44,960 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 01:44:44,960 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 01:44:44,960 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 01:44:44,976 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:44:44" (1/1) ... [2020-09-25 01:44:44,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:44:44" (1/1) ... [2020-09-25 01:44:44,998 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:44:44" (1/1) ... [2020-09-25 01:44:44,999 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:44:44" (1/1) ... [2020-09-25 01:44:45,038 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:44:44" (1/1) ... [2020-09-25 01:44:45,050 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:44:44" (1/1) ... [2020-09-25 01:44:45,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:44:44" (1/1) ... [2020-09-25 01:44:45,082 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 01:44:45,082 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 01:44:45,083 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 01:44:45,083 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 01:44:45,088 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:44:44" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:44:45,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 01:44:45,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 01:44:45,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-25 01:44:45,207 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-25 01:44:45,207 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-25 01:44:45,208 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-25 01:44:45,208 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-25 01:44:45,208 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-25 01:44:45,209 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-25 01:44:45,210 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-25 01:44:45,210 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-25 01:44:45,210 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-09-25 01:44:45,210 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-25 01:44:45,210 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-25 01:44:45,211 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-25 01:44:45,212 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-25 01:44:45,212 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 01:44:45,212 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-25 01:44:45,212 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-25 01:44:45,213 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-25 01:44:45,213 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-25 01:44:45,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-25 01:44:45,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-25 01:44:45,214 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-25 01:44:45,214 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-25 01:44:45,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-25 01:44:45,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-25 01:44:45,215 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-25 01:44:45,215 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-25 01:44:45,215 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-25 01:44:45,215 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-09-25 01:44:45,216 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-25 01:44:45,216 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-09-25 01:44:45,216 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-25 01:44:45,216 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-25 01:44:45,216 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-25 01:44:45,216 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-25 01:44:45,216 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-25 01:44:45,217 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-25 01:44:45,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 01:44:45,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 01:44:45,217 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-25 01:44:45,217 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-25 01:44:45,217 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-25 01:44:45,218 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-25 01:44:45,219 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-25 01:44:45,219 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-25 01:44:45,219 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-25 01:44:45,219 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-25 01:44:45,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 01:44:45,220 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-25 01:44:45,220 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-25 01:44:45,220 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-09-25 01:44:45,220 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-25 01:44:45,221 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-25 01:44:45,221 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-25 01:44:45,221 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-25 01:44:45,221 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-25 01:44:45,221 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-25 01:44:45,222 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-25 01:44:45,222 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-25 01:44:45,222 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-25 01:44:45,222 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-25 01:44:45,222 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 01:44:45,222 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-25 01:44:45,222 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-25 01:44:45,223 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 01:44:45,223 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 01:44:45,223 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-25 01:44:45,223 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 01:44:45,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 01:44:45,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 01:44:45,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 01:44:45,226 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-25 01:44:45,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 01:44:45,226 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-25 01:44:45,226 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-25 01:44:45,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 01:44:45,227 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-25 01:44:45,227 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-25 01:44:45,227 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-25 01:44:45,227 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-25 01:44:45,227 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-25 01:44:45,227 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-25 01:44:45,228 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-25 01:44:45,228 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-25 01:44:45,228 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-09-25 01:44:45,228 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-25 01:44:45,228 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-09-25 01:44:45,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 01:44:45,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 01:44:45,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 01:44:46,393 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 01:44:46,393 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-25 01:44:46,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:44:46 BoogieIcfgContainer [2020-09-25 01:44:46,402 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 01:44:46,403 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 01:44:46,403 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 01:44:46,407 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 01:44:46,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:44:44" (1/3) ... [2020-09-25 01:44:46,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@928de8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:44:46, skipping insertion in model container [2020-09-25 01:44:46,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:44:44" (2/3) ... [2020-09-25 01:44:46,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@928de8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:44:46, skipping insertion in model container [2020-09-25 01:44:46,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:44:46" (3/3) ... [2020-09-25 01:44:46,412 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product45.cil.c [2020-09-25 01:44:46,424 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 01:44:46,436 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 01:44:46,460 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 01:44:46,496 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 01:44:46,496 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 01:44:46,497 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 01:44:46,497 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 01:44:46,497 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 01:44:46,497 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 01:44:46,497 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 01:44:46,497 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 01:44:46,527 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states. [2020-09-25 01:44:46,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 01:44:46,546 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:44:46,548 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:44:46,548 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:44:46,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:44:46,555 INFO L82 PathProgramCache]: Analyzing trace with hash 2110022022, now seen corresponding path program 1 times [2020-09-25 01:44:46,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:44:46,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [161326657] [2020-09-25 01:44:46,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:44:46,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:44:47,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:44:47,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:44:47,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:44:48,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:44:48,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:44:51,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:44:51,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 01:44:51,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 01:44:51,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-09-25 01:44:51,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:44:51,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:44:51,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-25 01:44:51,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:44:51,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 01:44:52,400 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:44:52,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:44:52,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:44:52,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:44:52,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:44:52,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:44:52,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:44:52,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-09-25 01:44:52,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:44:52,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:44:52,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:44:52,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:44:52,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:44:52,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:44:52,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:44:52,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:44:52,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:44:52,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:44:52,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:44:52,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:44:52,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:44:52,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:44:52,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:44:52,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:44:52,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:44:52,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:44:52,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:44:52,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:44:52,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:44:52,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:44:52,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:44:52,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 01:44:52,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:44:52,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:44:52,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:44:52,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:44:52,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:44:52,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:44:52,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:44:52,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:44:52,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:44:52,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:44:52,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:44:52,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 01:44:52,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:44:52,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:44:52,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:44:52,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:44:52,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:44:52,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:44:52,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:44:52,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:44:52,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:44:52,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:44:52,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:44:52,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:44:52,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:44:52,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:44:52,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:44:52,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:44:52,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:44:52,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-25 01:44:52,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:44:52,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:44:52,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:44:52,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:44:52,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:44:52,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:44:52,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:44:52,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:44:52,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:44:52,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:44:52,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:44:52,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-25 01:44:52,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:44:52,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:44:52,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:44:52,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:44:52,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:44:52,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:44:52,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:44:52,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:44:52,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:44:52,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:44:52,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:44:52,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:44:52,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [161326657] [2020-09-25 01:44:52,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:44:52,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 01:44:52,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306073810] [2020-09-25 01:44:52,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 01:44:52,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:44:52,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 01:44:52,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 01:44:52,804 INFO L87 Difference]: Start difference. First operand 310 states. Second operand 3 states. [2020-09-25 01:44:54,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:44:54,522 INFO L93 Difference]: Finished difference Result 487 states and 582 transitions. [2020-09-25 01:44:54,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 01:44:54,526 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-09-25 01:44:54,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:44:54,559 INFO L225 Difference]: With dead ends: 487 [2020-09-25 01:44:54,559 INFO L226 Difference]: Without dead ends: 302 [2020-09-25 01:44:54,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 01:44:54,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-09-25 01:44:54,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 259. [2020-09-25 01:44:54,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-09-25 01:44:54,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 283 transitions. [2020-09-25 01:44:54,776 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 283 transitions. Word has length 142 [2020-09-25 01:44:54,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:44:54,777 INFO L479 AbstractCegarLoop]: Abstraction has 259 states and 283 transitions. [2020-09-25 01:44:54,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 01:44:54,778 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 283 transitions. [2020-09-25 01:44:54,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-25 01:44:54,791 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:44:54,792 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:44:54,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 01:44:54,796 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:44:54,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:44:54,797 INFO L82 PathProgramCache]: Analyzing trace with hash 2094249122, now seen corresponding path program 1 times [2020-09-25 01:44:54,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:44:54,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100239796] [2020-09-25 01:44:54,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:44:54,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:44:54,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:44:55,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:44:55,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:44:56,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:44:56,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:44:59,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:44:59,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 01:44:59,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 01:44:59,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-09-25 01:44:59,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:44:59,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:44:59,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-25 01:44:59,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 01:44:59,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:45:00,255 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:45:00,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:45:00,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:45:00,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:45:00,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:45:00,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:45:00,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:45:00,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-25 01:45:00,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:45:00,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:45:00,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:45:00,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:45:00,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:45:00,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:45:00,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:45:00,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:45:00,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:45:00,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:45:00,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:45:00,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:45:00,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:45:00,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:45:00,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:45:00,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:45:00,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:45:00,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:45:00,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:45:00,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:45:00,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:45:00,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:45:00,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:45:00,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:45:00,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:45:00,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:45:00,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:45:00,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:45:00,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:45:00,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:45:00,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:45:00,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:45:00,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:45:00,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:45:00,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:45:00,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:45:00,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:45:00,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:45:00,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:45:00,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:45:00,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:45:00,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:45:00,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:45:00,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:45:00,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:45:00,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:45:00,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:45:00,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:45:00,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:45:00,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:45:00,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:45:00,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:45:00,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:45:00,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-25 01:45:00,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:45:00,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:45:00,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:45:00,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:45:00,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:45:00,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:45:00,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:45:00,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:45:00,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:45:00,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:45:00,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:45:00,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-25 01:45:00,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:45:00,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:45:00,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:45:00,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:45:00,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:45:00,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:45:00,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:45:00,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:45:00,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:45:00,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:45:00,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:45:00,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:45:00,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1100239796] [2020-09-25 01:45:00,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:45:00,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 01:45:00,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162161423] [2020-09-25 01:45:00,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 01:45:00,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:45:00,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 01:45:00,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:45:00,544 INFO L87 Difference]: Start difference. First operand 259 states and 283 transitions. Second operand 4 states. [2020-09-25 01:45:01,170 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:45:02,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:45:02,356 INFO L93 Difference]: Finished difference Result 404 states and 457 transitions. [2020-09-25 01:45:02,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 01:45:02,356 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-09-25 01:45:02,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:45:02,363 INFO L225 Difference]: With dead ends: 404 [2020-09-25 01:45:02,363 INFO L226 Difference]: Without dead ends: 285 [2020-09-25 01:45:02,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:45:02,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-09-25 01:45:02,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 249. [2020-09-25 01:45:02,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-09-25 01:45:02,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 270 transitions. [2020-09-25 01:45:02,440 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 270 transitions. Word has length 143 [2020-09-25 01:45:02,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:45:02,442 INFO L479 AbstractCegarLoop]: Abstraction has 249 states and 270 transitions. [2020-09-25 01:45:02,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 01:45:02,443 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 270 transitions. [2020-09-25 01:45:02,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 01:45:02,446 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:45:02,446 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] [2020-09-25 01:45:02,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 01:45:02,446 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:45:02,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:45:02,447 INFO L82 PathProgramCache]: Analyzing trace with hash -104136956, now seen corresponding path program 1 times [2020-09-25 01:45:02,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:45:02,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1297805878] [2020-09-25 01:45:02,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:45:02,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:45:02,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:45:02,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:45:03,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:45:03,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:45:07,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:45:07,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-25 01:45:07,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 01:45:07,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-09-25 01:45:07,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:45:07,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 01:45:07,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-09-25 01:45:07,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 01:45:07,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:45:07,930 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:45:07,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:45:07,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:45:07,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:45:08,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:45:08,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:45:08,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:45:08,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-25 01:45:08,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:45:08,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:45:08,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:45:08,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:45:08,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:45:08,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:45:08,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:45:08,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:45:08,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:45:08,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:45:08,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:45:08,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:45:08,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:45:08,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:45:08,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:45:08,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:45:08,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:45:08,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:45:08,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:45:08,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:45:08,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:45:08,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:45:08,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:45:08,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:45:08,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:45:08,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:45:08,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:45:08,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:45:08,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:45:08,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:45:08,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:45:08,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:45:08,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:45:08,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:45:08,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:45:08,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:45:08,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:45:08,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:45:08,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:45:08,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:45:08,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:45:08,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:45:08,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:45:08,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:45:08,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:45:08,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:45:08,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:45:08,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:45:08,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:45:08,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:45:08,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:45:08,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:45:08,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:45:08,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-25 01:45:08,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:45:08,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:45:08,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:45:08,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:45:08,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:45:08,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:45:08,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:45:08,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:45:08,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:45:08,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:45:08,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:45:08,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-09-25 01:45:08,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:45:08,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:45:08,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:45:08,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:45:08,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:45:08,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 01:45:08,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:45:08,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 01:45:08,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:45:08,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:45:08,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:45:08,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:45:08,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1297805878] [2020-09-25 01:45:08,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:45:08,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 01:45:08,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120185958] [2020-09-25 01:45:08,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 01:45:08,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:45:08,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 01:45:08,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 01:45:08,199 INFO L87 Difference]: Start difference. First operand 249 states and 270 transitions. Second operand 8 states. [2020-09-25 01:45:08,767 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:45:09,968 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-25 01:45:10,318 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 01:45:10,664 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:45:11,023 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-25 01:45:11,368 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:45:12,269 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:45:12,576 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:45:12,930 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:45:13,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:45:13,591 INFO L93 Difference]: Finished difference Result 513 states and 596 transitions. [2020-09-25 01:45:13,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 01:45:13,598 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 152 [2020-09-25 01:45:13,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:45:13,602 INFO L225 Difference]: With dead ends: 513 [2020-09-25 01:45:13,602 INFO L226 Difference]: Without dead ends: 374 [2020-09-25 01:45:13,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2020-09-25 01:45:13,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2020-09-25 01:45:13,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 345. [2020-09-25 01:45:13,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-09-25 01:45:13,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 385 transitions. [2020-09-25 01:45:13,656 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 385 transitions. Word has length 152 [2020-09-25 01:45:13,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:45:13,657 INFO L479 AbstractCegarLoop]: Abstraction has 345 states and 385 transitions. [2020-09-25 01:45:13,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 01:45:13,657 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 385 transitions. [2020-09-25 01:45:13,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-25 01:45:13,660 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:45:13,660 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:45:13,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 01:45:13,661 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:45:13,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:45:13,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1132487743, now seen corresponding path program 1 times [2020-09-25 01:45:13,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:45:13,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973897134] [2020-09-25 01:45:13,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:45:13,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:45:13,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:45:14,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:45:14,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:45:18,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:45:18,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-09-25 01:45:18,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 01:45:18,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 01:45:18,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:45:18,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 01:45:18,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 169 [2020-09-25 01:45:18,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 01:45:18,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:45:19,021 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:45:19,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:45:19,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:45:19,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:45:19,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:45:19,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:45:19,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:45:19,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-25 01:45:19,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:45:19,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:45:19,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:45:19,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:45:19,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:45:19,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:45:19,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:45:19,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:45:19,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:45:19,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:45:19,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:45:19,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:45:19,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:45:19,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:45:19,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:45:19,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:45:19,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:45:19,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:45:19,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:45:19,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:45:19,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:45:19,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:45:19,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:45:19,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:45:19,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:45:19,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:45:19,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:45:19,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:45:19,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:45:19,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:45:19,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:45:19,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:45:19,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:45:19,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:45:19,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:45:19,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:45:19,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:45:19,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:45:19,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:45:19,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:45:19,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:45:19,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:45:19,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:45:19,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:45:19,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:45:19,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:45:19,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:45:19,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:45:19,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:45:19,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:45:19,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:45:19,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:45:19,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:45:19,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-25 01:45:19,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:45:19,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:45:19,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:45:19,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 01:45:19,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:45:19,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 01:45:19,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:45:19,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 01:45:19,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 01:45:19,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 01:45:19,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:45:19,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 01:45:19,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:45:19,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:45:19,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:45:19,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 01:45:19,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:45:19,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 01:45:19,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:45:19,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 01:45:19,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 01:45:19,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 01:45:19,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:45:19,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 01:45:19,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:45:19,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:45:19,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:45:19,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 01:45:19,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:45:19,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 01:45:19,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:45:19,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 01:45:19,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 01:45:19,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 01:45:19,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:45:19,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 01:45:19,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:45:19,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:45:19,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:45:19,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 01:45:19,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:45:19,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 01:45:19,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:45:19,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:45:19,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:45:19,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:45:19,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:45:19,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 01:45:19,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:45:19,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:45:19,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:45:19,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 01:45:19,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:45:19,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 01:45:19,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:45:19,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:45:19,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-25 01:45:19,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:45:19,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:45:19,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-25 01:45:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:45:19,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:45:19,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:45:19,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 01:45:19,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:45:19,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:45:19,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:45:19,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:45:19,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:45:19,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:45:19,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:45:19,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-25 01:45:19,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:45:19,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:45:19,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:45:19,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:45:19,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:45:19,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:45:19,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:45:19,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:45:19,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:45:19,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:45:19,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:45:19,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 01:45:19,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:45:19,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:45:19,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:45:19,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:45:19,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:45:19,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:45:19,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:45:19,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:45:19,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:45:19,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:45:19,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:45:19,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-09-25 01:45:19,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:45:19,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:45:19,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:45:19,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:45:19,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:45:19,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:45:19,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:45:19,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:45:19,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:45:19,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:45:19,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:45:19,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-09-25 01:45:19,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:45:19,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:45:19,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:45:19,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:45:19,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:45:19,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:45:19,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:45:19,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:45:19,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:45:19,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:45:19,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:45:19,737 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 01:45:19,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973897134] [2020-09-25 01:45:19,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:45:19,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 01:45:19,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356502900] [2020-09-25 01:45:19,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 01:45:19,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:45:19,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 01:45:19,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 01:45:19,741 INFO L87 Difference]: Start difference. First operand 345 states and 385 transitions. Second operand 8 states. [2020-09-25 01:45:20,916 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:45:21,225 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-25 01:45:21,576 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:45:21,933 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-25 01:45:22,235 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:45:23,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:45:23,135 INFO L93 Difference]: Finished difference Result 643 states and 764 transitions. [2020-09-25 01:45:23,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 01:45:23,136 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 212 [2020-09-25 01:45:23,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:45:23,144 INFO L225 Difference]: With dead ends: 643 [2020-09-25 01:45:23,144 INFO L226 Difference]: Without dead ends: 408 [2020-09-25 01:45:23,146 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-09-25 01:45:23,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2020-09-25 01:45:23,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 351. [2020-09-25 01:45:23,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2020-09-25 01:45:23,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 391 transitions. [2020-09-25 01:45:23,220 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 391 transitions. Word has length 212 [2020-09-25 01:45:23,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:45:23,221 INFO L479 AbstractCegarLoop]: Abstraction has 351 states and 391 transitions. [2020-09-25 01:45:23,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 01:45:23,221 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 391 transitions. [2020-09-25 01:45:23,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-25 01:45:23,224 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:45:23,224 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:45:23,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 01:45:23,224 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:45:23,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:45:23,225 INFO L82 PathProgramCache]: Analyzing trace with hash -551620449, now seen corresponding path program 1 times [2020-09-25 01:45:23,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:45:23,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [873136691] [2020-09-25 01:45:23,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:45:23,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:45:23,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:45:23,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:45:23,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:45:28,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:45:28,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-09-25 01:45:28,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 01:45:28,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 01:45:28,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:45:28,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 01:45:28,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-09-25 01:45:28,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 01:45:28,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:45:28,562 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:45:28,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:45:28,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:45:28,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:45:28,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:45:28,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:45:28,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:45:28,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-25 01:45:28,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:45:28,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:45:28,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:45:28,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:45:28,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:45:28,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:45:28,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:45:28,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:45:28,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:45:28,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:45:28,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:45:28,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:45:28,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:45:28,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:45:28,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:45:28,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:45:28,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:45:28,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:45:28,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:45:28,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:45:28,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:45:28,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:45:28,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:45:28,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:45:28,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:45:28,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:45:28,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:45:28,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:45:28,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:45:28,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:45:28,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:45:28,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:45:28,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:45:28,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:45:28,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:45:28,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:45:28,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:45:28,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:45:28,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:45:28,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:45:28,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:45:28,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:45:28,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:45:28,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:45:28,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:45:28,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:45:28,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:45:28,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:45:28,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:45:28,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:45:28,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:45:28,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:45:28,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:45:28,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-25 01:45:28,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:45:28,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:45:28,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:45:28,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 01:45:28,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:45:28,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-25 01:45:28,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:45:28,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 01:45:28,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 01:45:28,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 01:45:28,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:45:28,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 01:45:28,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:45:28,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:45:28,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:45:28,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 01:45:28,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:45:28,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 01:45:28,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:45:28,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 01:45:28,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 01:45:28,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 01:45:28,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:45:28,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 01:45:28,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:45:28,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:45:29,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:45:29,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 01:45:29,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:45:29,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 01:45:29,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:45:29,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 01:45:29,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:45:29,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 01:45:29,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:45:29,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 01:45:29,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:45:29,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:45:29,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:45:29,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 01:45:29,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:45:29,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:45:29,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:45:29,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:45:29,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:45:29,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:45:29,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:45:29,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 01:45:29,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:45:29,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:45:29,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:45:29,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 01:45:29,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:45:29,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 01:45:29,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:45:29,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:45:29,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-25 01:45:29,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:45:29,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:45:29,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-25 01:45:29,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:45:29,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:45:29,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:45:29,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 01:45:29,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:45:29,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:45:29,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:45:29,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:45:29,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:45:29,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:45:29,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:45:29,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-25 01:45:29,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:45:29,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:45:29,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:45:29,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:45:29,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:45:29,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:45:29,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:45:29,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:45:29,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:45:29,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:45:29,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:45:29,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 01:45:29,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:45:29,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:45:29,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:45:29,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:45:29,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:45:29,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:45:29,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:45:29,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:45:29,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:45:29,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:45:29,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:45:29,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-09-25 01:45:29,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:45:29,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:45:29,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:45:29,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:45:29,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:45:29,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:45:29,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:45:29,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:45:29,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:45:29,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:45:29,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:45:29,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-09-25 01:45:29,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:45:29,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:45:29,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:45:29,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:45:29,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:45:29,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:45:29,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:45:29,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:45:29,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:45:29,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:45:29,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:45:29,185 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 01:45:29,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [873136691] [2020-09-25 01:45:29,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:45:29,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 01:45:29,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304045416] [2020-09-25 01:45:29,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 01:45:29,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:45:29,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 01:45:29,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 01:45:29,188 INFO L87 Difference]: Start difference. First operand 351 states and 391 transitions. Second operand 9 states. [2020-09-25 01:45:30,665 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:45:30,970 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-25 01:45:31,292 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 01:45:31,593 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 187