/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 --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product56.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:10:47,119 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:10:47,124 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:10:47,174 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:10:47,174 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:10:47,186 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:10:47,188 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:10:47,190 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:10:47,193 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:10:47,195 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:10:47,196 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:10:47,199 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:10:47,199 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:10:47,204 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:10:47,206 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:10:47,208 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:10:47,210 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:10:47,212 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:10:47,215 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:10:47,221 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:10:47,226 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:10:47,228 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:10:47,229 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:10:47,230 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:10:47,235 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:10:47,235 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:10:47,235 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:10:47,239 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:10:47,240 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:10:47,242 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:10:47,242 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:10:47,243 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:10:47,244 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:10:47,245 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:10:47,247 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:10:47,247 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:10:47,248 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:10:47,248 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:10:47,248 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:10:47,250 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:10:47,251 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:10:47,252 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 [2020-09-21 12:10:47,304 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:10:47,305 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:10:47,307 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:10:47,307 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:10:47,308 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:10:47,308 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:10:47,308 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:10:47,309 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:10:47,309 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:10:47,309 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:10:47,310 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:10:47,310 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:10:47,311 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:10:47,311 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:10:47,311 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:10:47,312 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:10:47,312 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:10:47,312 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:10:47,312 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:10:47,312 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:10:47,313 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:10:47,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:10:47,313 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:10:47,313 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:10:47,314 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:10:47,314 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:10:47,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:10:47,314 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:10:47,314 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:10:47,315 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.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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:10:47,769 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:10:47,797 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:10:47,804 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:10:47,806 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:10:47,807 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:10:47,809 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product56.cil.c [2020-09-21 12:10:47,900 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3dffa9feb/8427f421933e497fb6811b54f0ec8ea0/FLAG34ac98639 [2020-09-21 12:10:48,538 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:10:48,546 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product56.cil.c [2020-09-21 12:10:48,568 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3dffa9feb/8427f421933e497fb6811b54f0ec8ea0/FLAG34ac98639 [2020-09-21 12:10:48,809 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3dffa9feb/8427f421933e497fb6811b54f0ec8ea0 [2020-09-21 12:10:48,823 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:10:48,828 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:10:48,830 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:10:48,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:10:48,834 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:10:48,835 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:10:48" (1/1) ... [2020-09-21 12:10:48,839 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51800d17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:10:48, skipping insertion in model container [2020-09-21 12:10:48,839 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:10:48" (1/1) ... [2020-09-21 12:10:48,846 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:10:48,916 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:10:49,408 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:10:49,434 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:10:49,571 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:10:49,609 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:10:49,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:10:49 WrapperNode [2020-09-21 12:10:49,610 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:10:49,611 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:10:49,611 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:10:49,611 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:10:49,627 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:10:49" (1/1) ... [2020-09-21 12:10:49,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:10:49" (1/1) ... [2020-09-21 12:10:49,650 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:10:49" (1/1) ... [2020-09-21 12:10:49,651 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:10:49" (1/1) ... [2020-09-21 12:10:49,696 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:10:49" (1/1) ... [2020-09-21 12:10:49,709 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:10:49" (1/1) ... [2020-09-21 12:10:49,714 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:10:49" (1/1) ... [2020-09-21 12:10:49,726 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:10:49,727 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:10:49,727 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:10:49,727 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:10:49,729 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:10:49" (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 [2020-09-21 12:10:49,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:10:49,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:10:49,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-21 12:10:49,807 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-21 12:10:49,807 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-21 12:10:49,807 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-21 12:10:49,807 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-21 12:10:49,807 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-21 12:10:49,808 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-21 12:10:49,808 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-21 12:10:49,808 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-21 12:10:49,808 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-21 12:10:49,808 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-21 12:10:49,809 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-21 12:10:49,809 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-21 12:10:49,809 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-21 12:10:49,809 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-21 12:10:49,809 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-21 12:10:49,810 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-09-21 12:10:49,810 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-09-21 12:10:49,810 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-21 12:10:49,810 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-21 12:10:49,811 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-21 12:10:49,811 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-21 12:10:49,811 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-21 12:10:49,811 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-21 12:10:49,811 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-21 12:10:49,811 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-21 12:10:49,812 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-21 12:10:49,812 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-21 12:10:49,812 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-21 12:10:49,812 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-21 12:10:49,812 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-21 12:10:49,812 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-21 12:10:49,813 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-21 12:10:49,813 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-21 12:10:49,813 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-21 12:10:49,813 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-21 12:10:49,813 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-21 12:10:49,813 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-21 12:10:49,814 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-21 12:10:49,814 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-21 12:10:49,814 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-21 12:10:49,814 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:10:49,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:10:49,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:10:49,815 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 12:10:49,815 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 12:10:49,815 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 12:10:49,815 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 12:10:49,815 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-21 12:10:49,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 12:10:49,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 12:10:49,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 12:10:49,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 12:10:49,816 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-21 12:10:49,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 12:10:49,817 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-21 12:10:49,817 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-21 12:10:49,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 12:10:49,817 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-21 12:10:49,817 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-21 12:10:49,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 12:10:49,817 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-21 12:10:49,818 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-21 12:10:49,818 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-21 12:10:49,818 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-21 12:10:49,818 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-21 12:10:49,818 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-21 12:10:49,818 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-21 12:10:49,819 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-21 12:10:49,819 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-21 12:10:49,819 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-21 12:10:49,819 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-21 12:10:49,819 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-09-21 12:10:49,819 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-09-21 12:10:49,820 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-21 12:10:49,820 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-21 12:10:49,820 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-21 12:10:49,820 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-21 12:10:49,820 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-21 12:10:49,820 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-21 12:10:49,821 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-21 12:10:49,821 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-21 12:10:49,821 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-21 12:10:49,821 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-21 12:10:49,821 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-21 12:10:49,821 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-21 12:10:49,822 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-21 12:10:49,822 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-21 12:10:49,822 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-21 12:10:49,822 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-21 12:10:49,822 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-21 12:10:49,822 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-21 12:10:49,822 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-21 12:10:49,823 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-21 12:10:49,823 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-21 12:10:49,823 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-21 12:10:49,823 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:10:49,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:10:49,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 12:10:49,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:10:51,037 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:10:51,037 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 12:10:51,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:10:51 BoogieIcfgContainer [2020-09-21 12:10:51,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:10:51,050 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:10:51,050 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:10:51,054 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:10:51,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:10:48" (1/3) ... [2020-09-21 12:10:51,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18f870bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:10:51, skipping insertion in model container [2020-09-21 12:10:51,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:10:49" (2/3) ... [2020-09-21 12:10:51,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18f870bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:10:51, skipping insertion in model container [2020-09-21 12:10:51,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:10:51" (3/3) ... [2020-09-21 12:10:51,060 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product56.cil.c [2020-09-21 12:10:51,072 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:10:51,089 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:10:51,112 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:10:51,141 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:10:51,141 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:10:51,141 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:10:51,141 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:10:51,141 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:10:51,142 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:10:51,142 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:10:51,142 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:10:51,171 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states. [2020-09-21 12:10:51,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-21 12:10:51,184 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:10:51,186 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] [2020-09-21 12:10:51,187 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:10:51,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:10:51,196 INFO L82 PathProgramCache]: Analyzing trace with hash -453171886, now seen corresponding path program 1 times [2020-09-21 12:10:51,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:10:51,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [503617188] [2020-09-21 12:10:51,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:10:51,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:10:51,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:10:51,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:10:52,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:10:52,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-21 12:10:52,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:10:52,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1008 [2020-09-21 12:10:52,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:10:52,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:10:52,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-09-21 12:10:52,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:10:52,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-21 12:10:53,343 WARN L193 SmtUtils]: Spent 560.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:10:53,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:10:53,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:10:53,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:10:53,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:10:53,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:10:53,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:10:53,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-21 12:10:53,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:10:53,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:10:53,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:10:53,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:10:53,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:10:53,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:10:53,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:10:53,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:10:53,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:10:53,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:10:53,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:10:53,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:10:53,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:10:53,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:10:53,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:10:53,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:10:53,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:10:53,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:10:53,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:10:53,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:10:53,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:10:53,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:10:53,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:10:53,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:10:53,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:10:53,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:10:53,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:10:53,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:10:53,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:10:53,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:10:53,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:10:53,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:10:53,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:10:53,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:10:53,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:10:53,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:10:53,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:10:53,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:10:53,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:10:53,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:10:53,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:10:53,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:10:53,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:10:53,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:10:53,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:10:53,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:10:53,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:10:53,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:10:53,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:10:53,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:10:53,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:10:53,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:10:53,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:10:53,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 12:10:53,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:10:53,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:10:53,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:10:53,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:10:53,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:10:53,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:10:53,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:10:53,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:10:53,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:10:53,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:10:53,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:10:53,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 12:10:53,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:10:53,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:10:53,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:10:53,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:10:53,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:10:53,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:10:53,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:10:53,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:10:53,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:10:53,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:10:53,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:10:53,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-21 12:10:53,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:10:53,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:10:53,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:10:53,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:10:53,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:10:53,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:10:53,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:10:53,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:10:53,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:10:53,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:10:53,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:10:53,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:10:53,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [503617188] [2020-09-21 12:10:53,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:10:53,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:10:53,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089803910] [2020-09-21 12:10:53,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:10:53,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:10:53,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:10:53,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:10:53,593 INFO L87 Difference]: Start difference. First operand 201 states. Second operand 4 states. [2020-09-21 12:10:54,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:10:54,989 INFO L93 Difference]: Finished difference Result 353 states and 461 transitions. [2020-09-21 12:10:54,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 12:10:54,991 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-09-21 12:10:54,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:10:55,010 INFO L225 Difference]: With dead ends: 353 [2020-09-21 12:10:55,010 INFO L226 Difference]: Without dead ends: 196 [2020-09-21 12:10:55,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:10:55,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-09-21 12:10:55,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 158. [2020-09-21 12:10:55,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-09-21 12:10:55,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 188 transitions. [2020-09-21 12:10:55,127 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 188 transitions. Word has length 51 [2020-09-21 12:10:55,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:10:55,128 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 188 transitions. [2020-09-21 12:10:55,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:10:55,128 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 188 transitions. [2020-09-21 12:10:55,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-21 12:10:55,132 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:10:55,133 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] [2020-09-21 12:10:55,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:10:55,133 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:10:55,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:10:55,134 INFO L82 PathProgramCache]: Analyzing trace with hash 23130160, now seen corresponding path program 1 times [2020-09-21 12:10:55,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:10:55,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1236252635] [2020-09-21 12:10:55,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:10:55,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:10:55,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:10:55,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:10:56,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:10:56,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-21 12:10:56,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:10:56,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1007 [2020-09-21 12:10:56,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:10:56,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:10:56,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-21 12:10:56,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:10:56,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:10:56,483 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:10:56,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:10:56,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:10:56,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:10:56,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:10:56,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:10:56,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:10:56,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-21 12:10:56,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:10:56,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:10:56,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:10:56,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:10:56,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:10:56,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:10:56,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:10:56,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:10:56,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:10:56,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:10:56,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:10:56,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:10:56,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:10:56,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:10:56,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:10:56,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:10:56,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:10:56,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:10:56,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:10:56,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:10:56,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:10:56,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:10:56,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:10:56,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:10:56,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:10:56,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:10:56,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:10:56,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:10:56,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:10:56,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:10:56,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:10:56,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:10:56,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:10:56,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:10:56,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:10:56,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:10:56,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:10:56,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:10:56,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:10:56,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:10:56,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:10:56,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:10:56,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:10:56,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:10:56,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:10:56,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:10:56,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:10:56,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:10:56,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:10:56,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:10:56,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:10:56,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:10:56,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:10:56,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 12:10:56,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:10:56,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:10:56,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:10:56,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:10:56,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:10:56,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:10:56,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:10:56,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:10:56,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:10:56,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:10:56,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:10:56,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 12:10:56,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:10:56,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:10:56,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:10:56,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:10:56,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:10:56,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:10:56,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:10:56,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:10:56,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:10:56,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:10:56,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:10:56,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 12:10:56,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:10:56,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:10:56,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:10:56,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:10:56,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:10:56,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:10:56,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:10:56,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:10:56,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:10:56,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:10:56,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:10:56,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:10:56,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1236252635] [2020-09-21 12:10:56,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:10:56,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:10:56,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806732021] [2020-09-21 12:10:56,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:10:56,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:10:56,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:10:56,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:10:56,641 INFO L87 Difference]: Start difference. First operand 158 states and 188 transitions. Second operand 5 states. [2020-09-21 12:10:57,245 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:10:58,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:10:58,493 INFO L93 Difference]: Finished difference Result 288 states and 360 transitions. [2020-09-21 12:10:58,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 12:10:58,494 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-09-21 12:10:58,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:10:58,499 INFO L225 Difference]: With dead ends: 288 [2020-09-21 12:10:58,499 INFO L226 Difference]: Without dead ends: 186 [2020-09-21 12:10:58,501 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:10:58,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-09-21 12:10:58,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 149. [2020-09-21 12:10:58,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-09-21 12:10:58,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 176 transitions. [2020-09-21 12:10:58,557 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 176 transitions. Word has length 52 [2020-09-21 12:10:58,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:10:58,557 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 176 transitions. [2020-09-21 12:10:58,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:10:58,557 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 176 transitions. [2020-09-21 12:10:58,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-21 12:10:58,560 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:10:58,560 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] [2020-09-21 12:10:58,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:10:58,564 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:10:58,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:10:58,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1418292754, now seen corresponding path program 1 times [2020-09-21 12:10:58,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:10:58,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535990610] [2020-09-21 12:10:58,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:10:58,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:10:58,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:10:59,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:10:59,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:10:59,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-21 12:10:59,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:10:59,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1017 [2020-09-21 12:10:59,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:10:59,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 12:10:59,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:10:59,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-21 12:10:59,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:10:59,941 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:10:59,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:10:59,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:10:59,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:00,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:00,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:00,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:00,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-21 12:11:00,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:00,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:11:00,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:00,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:11:00,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:00,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:11:00,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:00,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:00,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:00,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:11:00,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:00,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:11:00,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:00,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:11:00,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:00,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:11:00,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:00,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:11:00,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:00,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:00,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:00,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:11:00,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:00,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:11:00,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:00,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:11:00,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:00,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:11:00,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:00,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:11:00,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:00,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:00,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:00,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:00,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:00,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:11:00,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:00,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:11:00,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:00,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:11:00,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:00,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:11:00,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:00,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:00,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:00,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:11:00,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:00,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:11:00,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:00,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:11:00,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:00,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:11:00,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:00,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 12:11:00,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:00,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:00,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:00,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:00,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:00,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:11:00,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:00,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:11:00,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:00,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:11:00,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:00,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-21 12:11:00,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:00,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:00,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:00,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:00,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:00,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:11:00,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:00,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:00,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:11:00,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:00,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:00,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-21 12:11:00,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:00,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:00,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:00,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:00,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:00,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:11:00,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:00,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:00,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:11:00,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:00,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:00,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:11:00,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1535990610] [2020-09-21 12:11:00,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:11:00,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:11:00,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815348226] [2020-09-21 12:11:00,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:11:00,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:11:00,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:11:00,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:11:00,177 INFO L87 Difference]: Start difference. First operand 149 states and 176 transitions. Second operand 5 states. [2020-09-21 12:11:00,525 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:11:02,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:11:02,767 INFO L93 Difference]: Finished difference Result 441 states and 556 transitions. [2020-09-21 12:11:02,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 12:11:02,769 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 57 [2020-09-21 12:11:02,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:11:02,773 INFO L225 Difference]: With dead ends: 441 [2020-09-21 12:11:02,773 INFO L226 Difference]: Without dead ends: 320 [2020-09-21 12:11:02,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:11:02,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-09-21 12:11:02,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 260. [2020-09-21 12:11:02,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-09-21 12:11:02,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 315 transitions. [2020-09-21 12:11:02,850 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 315 transitions. Word has length 57 [2020-09-21 12:11:02,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:11:02,851 INFO L479 AbstractCegarLoop]: Abstraction has 260 states and 315 transitions. [2020-09-21 12:11:02,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:11:02,851 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 315 transitions. [2020-09-21 12:11:02,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-21 12:11:02,854 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:11:02,855 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] [2020-09-21 12:11:02,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:11:02,855 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:11:02,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:11:02,856 INFO L82 PathProgramCache]: Analyzing trace with hash -335998659, now seen corresponding path program 1 times [2020-09-21 12:11:02,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:11:02,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [87668042] [2020-09-21 12:11:02,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:11:02,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:02,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:03,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:03,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-21 12:11:03,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:03,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1027 [2020-09-21 12:11:03,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:03,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:11:03,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:11:03,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-21 12:11:03,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:04,323 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:11:04,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:11:04,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:04,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:04,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:04,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:04,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:04,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-21 12:11:04,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:04,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:11:04,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:04,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:11:04,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:04,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:11:04,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:04,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:04,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:04,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:11:04,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:04,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:11:04,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:04,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:11:04,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:04,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:11:04,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:11:04,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:11:04,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:04,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:04,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:04,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:11:04,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:04,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:11:04,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:04,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:11:04,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:04,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:11:04,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:04,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:11:04,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:04,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:04,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:04,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:04,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:04,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:11:04,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:04,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:11:04,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:04,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:11:04,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:04,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:11:04,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:04,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:04,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:04,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:11:04,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:04,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:11:04,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:04,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:11:04,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:04,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:11:04,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:04,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 12:11:04,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:04,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:04,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:04,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:04,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:04,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:11:04,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:04,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:11:04,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:04,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:11:04,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:11:04,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 12:11:04,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:04,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:04,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:04,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:11:04,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:04,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:11:04,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:04,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:11:04,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:04,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:11:04,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:04,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-21 12:11:04,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:04,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:04,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:04,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:04,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:04,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:11:04,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:04,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:11:04,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:04,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:11:04,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:04,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-21 12:11:04,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:04,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:04,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:04,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:04,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:04,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:11:04,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:04,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:04,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:11:04,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:04,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:04,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:11:04,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [87668042] [2020-09-21 12:11:04,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:11:04,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 12:11:04,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474897664] [2020-09-21 12:11:04,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 12:11:04,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:11:04,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 12:11:04,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:11:04,632 INFO L87 Difference]: Start difference. First operand 260 states and 315 transitions. Second operand 9 states. [2020-09-21 12:11:05,038 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:11:06,313 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:11:06,838 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:11:07,155 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:11:07,505 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 12:11:09,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:11:09,629 INFO L93 Difference]: Finished difference Result 838 states and 1106 transitions. [2020-09-21 12:11:09,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-21 12:11:09,630 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-09-21 12:11:09,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:11:09,640 INFO L225 Difference]: With dead ends: 838 [2020-09-21 12:11:09,640 INFO L226 Difference]: Without dead ends: 606 [2020-09-21 12:11:09,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-09-21 12:11:09,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2020-09-21 12:11:09,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 475. [2020-09-21 12:11:09,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2020-09-21 12:11:09,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 580 transitions. [2020-09-21 12:11:09,790 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 580 transitions. Word has length 62 [2020-09-21 12:11:09,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:11:09,790 INFO L479 AbstractCegarLoop]: Abstraction has 475 states and 580 transitions. [2020-09-21 12:11:09,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 12:11:09,791 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 580 transitions. [2020-09-21 12:11:09,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-21 12:11:09,795 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:11:09,796 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] [2020-09-21 12:11:09,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:11:09,796 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:11:09,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:11:09,796 INFO L82 PathProgramCache]: Analyzing trace with hash 563759321, now seen corresponding path program 1 times [2020-09-21 12:11:09,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:11:09,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [421271364] [2020-09-21 12:11:09,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:11:09,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:09,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:10,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:10,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:10,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:10,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-21 12:11:10,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:11:10,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1026 [2020-09-21 12:11:10,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:10,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:11:10,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-09-21 12:11:10,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-21 12:11:10,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:11,150 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:11:11,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:11:11,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:11,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:11,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:11,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:11,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:11,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-21 12:11:11,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:11,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:11,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:11,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:11,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:11,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:11:11,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:11,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:11,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:11,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:11:11,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:11,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:11:11,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:11,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:11,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:11,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:11,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:11,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:11:11,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:11,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:11,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:11,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:11:11,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:11,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:11:11,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:11,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:11,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:11,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:11,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:11,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:11:11,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:11,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:11,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:11,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:11,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:11,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:11:11,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:11,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:11,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:11,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:11,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:11,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:11:11,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:11,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:11,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:11,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:11:11,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:11,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:11:11,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:11,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:11,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:11,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:11,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:11,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 12:11:11,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:11,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:11,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:11,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:11,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:11,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:11:11,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:11,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:11,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:11,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:11,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:11,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-21 12:11:11,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:11,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:11,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:11,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:11,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:11,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:11:11,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:11,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:11,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:11,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:11,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:11,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-21 12:11:11,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:11,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:11,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:11,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:11:11,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:11,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:11:11,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:11,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:11,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:11,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:11,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:11,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-21 12:11:11,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:11,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:11,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:11,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:11,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:11,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:11:11,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:11,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:11:11,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:11,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:11:11,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:11,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-21 12:11:11,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:11,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:11,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:11,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:11,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:11,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:11:11,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:11,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:11:11,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:11,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:11:11,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:11,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:11:11,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [421271364] [2020-09-21 12:11:11,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:11:11,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-21 12:11:11,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866235734] [2020-09-21 12:11:11,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 12:11:11,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:11:11,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 12:11:11,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:11:11,365 INFO L87 Difference]: Start difference. First operand 475 states and 580 transitions. Second operand 10 states. [2020-09-21 12:11:11,927 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:11:13,168 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:11:13,509 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:11:13,841 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:11:14,741 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:11:16,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:11:16,623 INFO L93 Difference]: Finished difference Result 1381 states and 1884 transitions. [2020-09-21 12:11:16,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-21 12:11:16,625 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-09-21 12:11:16,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:11:16,632 INFO L225 Difference]: With dead ends: 1381 [2020-09-21 12:11:16,632 INFO L226 Difference]: Without dead ends: 934 [2020-09-21 12:11:16,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2020-09-21 12:11:16,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2020-09-21 12:11:16,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 751. [2020-09-21 12:11:16,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 751 states. [2020-09-21 12:11:16,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 914 transitions. [2020-09-21 12:11:16,817 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 914 transitions. Word has length 66 [2020-09-21 12:11:16,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:11:16,817 INFO L479 AbstractCegarLoop]: Abstraction has 751 states and 914 transitions. [2020-09-21 12:11:16,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 12:11:16,817 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 914 transitions. [2020-09-21 12:11:16,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-09-21 12:11:16,825 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:11:16,826 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] [2020-09-21 12:11:16,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:11:16,826 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:11:16,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:11:16,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1340944239, now seen corresponding path program 1 times [2020-09-21 12:11:16,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:11:16,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [623583439] [2020-09-21 12:11:16,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:11:16,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:16,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:17,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:17,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:17,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-21 12:11:17,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:11:17,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1035 [2020-09-21 12:11:17,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:17,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:11:17,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-21 12:11:17,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:11:17,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:18,179 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:11:18,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:11:18,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:18,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:18,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:18,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:18,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:18,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-21 12:11:18,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:18,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:18,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:18,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:18,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:18,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:11:18,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:18,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:18,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:18,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:11:18,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:18,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:11:18,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:18,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:18,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:18,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:18,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:18,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:11:18,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:18,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:18,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:18,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:11:18,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:18,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:11:18,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:18,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:18,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:18,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:18,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:18,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:11:18,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:18,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:18,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:18,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:18,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:18,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:11:18,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:18,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:18,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:18,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:18,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:18,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:11:18,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:18,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:18,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:18,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:11:18,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:18,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:11:18,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:18,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:18,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:18,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:18,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:18,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 12:11:18,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:18,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:18,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:18,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:18,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:18,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:11:18,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:18,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:18,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:18,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:18,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:18,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-21 12:11:18,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:18,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:18,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:18,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:18,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:18,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:11:18,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:18,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:18,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:18,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:18,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:18,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 12:11:18,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:18,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:18,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:18,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-21 12:11:18,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:18,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-21 12:11:18,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:18,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:11:18,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-21 12:11:18,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:11:18,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:11:18,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:11:18,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:18,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:18,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:18,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-21 12:11:18,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:18,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-21 12:11:18,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:18,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:11:18,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-21 12:11:18,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:11:18,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:18,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:11:18,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:18,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:18,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:18,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:11:18,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:18,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-21 12:11:18,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:18,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:11:18,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 12:11:18,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:11:18,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:18,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:11:18,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:18,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:18,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:18,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:11:18,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:18,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-21 12:11:18,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:18,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:11:18,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:18,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 12:11:18,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:18,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:11:18,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:18,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:18,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:18,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:11:18,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:18,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:11:18,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:18,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:18,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:18,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:18,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:11:18,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:11:18,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:18,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:18,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:18,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:18,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:18,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:11:18,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:18,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:18,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:11:18,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:18,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:18,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-21 12:11:18,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:18,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:18,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:18,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:18,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:18,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:11:18,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:18,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:18,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:11:18,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:18,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:18,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-21 12:11:18,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:18,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:18,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:18,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:18,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:18,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:11:18,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:18,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:18,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:11:18,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:18,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:18,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:11:18,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [623583439] [2020-09-21 12:11:18,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:11:18,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-21 12:11:18,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121773159] [2020-09-21 12:11:18,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 12:11:18,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:11:18,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 12:11:18,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:11:18,660 INFO L87 Difference]: Start difference. First operand 751 states and 914 transitions. Second operand 10 states. [2020-09-21 12:11:19,966 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:11:20,284 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 12:11:20,638 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:11:20,993 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-21 12:11:22,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:11:22,559 INFO L93 Difference]: Finished difference Result 1702 states and 2249 transitions. [2020-09-21 12:11:22,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-21 12:11:22,560 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2020-09-21 12:11:22,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:11:22,569 INFO L225 Difference]: With dead ends: 1702 [2020-09-21 12:11:22,569 INFO L226 Difference]: Without dead ends: 979 [2020-09-21 12:11:22,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-09-21 12:11:22,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2020-09-21 12:11:22,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 777. [2020-09-21 12:11:22,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 777 states. [2020-09-21 12:11:22,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777 states to 777 states and 942 transitions. [2020-09-21 12:11:22,732 INFO L78 Accepts]: Start accepts. Automaton has 777 states and 942 transitions. Word has length 94 [2020-09-21 12:11:22,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:11:22,733 INFO L479 AbstractCegarLoop]: Abstraction has 777 states and 942 transitions. [2020-09-21 12:11:22,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 12:11:22,733 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states and 942 transitions. [2020-09-21 12:11:22,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-09-21 12:11:22,738 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:11:22,739 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] [2020-09-21 12:11:22,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:11:22,739 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:11:22,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:11:22,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1413330797, now seen corresponding path program 1 times [2020-09-21 12:11:22,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:11:22,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76750715] [2020-09-21 12:11:22,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:11:22,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:22,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:23,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:23,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:23,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-21 12:11:23,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:11:23,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1032 [2020-09-21 12:11:23,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:23,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:11:23,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-09-21 12:11:23,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:11:23,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:11:24,071 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:11:24,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:11:24,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:24,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:24,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:24,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:24,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:24,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-21 12:11:24,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:24,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:24,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:24,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:24,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:24,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:11:24,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:24,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:24,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:24,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:11:24,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:24,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:11:24,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:24,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:24,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:24,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:24,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:24,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:11:24,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:24,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:24,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:24,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:11:24,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:24,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:11:24,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:24,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:24,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:24,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:24,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:24,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:11:24,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:24,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:24,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:24,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:24,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:24,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:11:24,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:24,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:24,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:24,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:24,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:24,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:11:24,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:24,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:24,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:24,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:11:24,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:24,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:11:24,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:24,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:24,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:24,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:24,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:24,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 12:11:24,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:24,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:24,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:24,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:24,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:24,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:11:24,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:24,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:24,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:24,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:24,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 12:11:24,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-21 12:11:24,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:24,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:24,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:24,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:24,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:24,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:11:24,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:24,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:24,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:24,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:24,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:11:24,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 12:11:24,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:24,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:24,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:24,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-21 12:11:24,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:24,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-21 12:11:24,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:24,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:11:24,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-21 12:11:24,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:11:24,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:24,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:11:24,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:24,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:24,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:24,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-21 12:11:24,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:24,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-21 12:11:24,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:24,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:11:24,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 12:11:24,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:11:24,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:24,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:11:24,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:24,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:24,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:24,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:11:24,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:24,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-21 12:11:24,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:24,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:11:24,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:11:24,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:11:24,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:24,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:11:24,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:24,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:24,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:24,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:11:24,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:24,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-21 12:11:24,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:24,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:11:24,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:11:24,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:11:24,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:24,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:11:24,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:24,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:24,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:24,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:11:24,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:24,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:11:24,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:24,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:11:24,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:24,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:11:24,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:11:24,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:11:24,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:24,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:24,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:24,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:24,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:24,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:11:24,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:24,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:24,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:11:24,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:24,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:24,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-21 12:11:24,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:24,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:24,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:24,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:24,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:24,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:11:24,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:24,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:24,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:11:24,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:24,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:24,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-21 12:11:24,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:24,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:24,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:24,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:24,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:24,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:11:24,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:24,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:24,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:11:24,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:24,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:24,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:11:24,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [76750715] [2020-09-21 12:11:24,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:11:24,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 12:11:24,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643550808] [2020-09-21 12:11:24,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 12:11:24,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:11:24,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 12:11:24,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:11:24,568 INFO L87 Difference]: Start difference. First operand 777 states and 942 transitions. Second operand 9 states. [2020-09-21 12:11:25,690 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:11:26,049 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:11:26,312 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:11:28,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:11:28,049 INFO L93 Difference]: Finished difference Result 1744 states and 2348 transitions. [2020-09-21 12:11:28,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 12:11:28,049 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-09-21 12:11:28,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:11:28,057 INFO L225 Difference]: With dead ends: 1744 [2020-09-21 12:11:28,057 INFO L226 Difference]: Without dead ends: 995 [2020-09-21 12:11:28,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-09-21 12:11:28,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995 states. [2020-09-21 12:11:28,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 793. [2020-09-21 12:11:28,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 793 states. [2020-09-21 12:11:28,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 958 transitions. [2020-09-21 12:11:28,220 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 958 transitions. Word has length 94 [2020-09-21 12:11:28,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:11:28,221 INFO L479 AbstractCegarLoop]: Abstraction has 793 states and 958 transitions. [2020-09-21 12:11:28,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 12:11:28,221 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 958 transitions. [2020-09-21 12:11:28,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-09-21 12:11:28,223 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:11:28,223 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] [2020-09-21 12:11:28,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:11:28,224 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:11:28,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:11:28,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1083565036, now seen corresponding path program 1 times [2020-09-21 12:11:28,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:11:28,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933783092] [2020-09-21 12:11:28,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:11:28,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:28,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:29,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:29,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:29,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-21 12:11:29,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:11:29,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-09-21 12:11:29,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:29,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 12:11:29,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-21 12:11:29,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-21 12:11:29,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:29,582 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:11:29,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:11:29,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:29,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:29,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:29,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:29,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:29,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-21 12:11:29,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:29,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:29,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:29,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:29,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:29,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:11:29,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:29,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:29,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:29,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:11:29,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:29,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:11:29,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:29,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:29,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:29,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:29,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:29,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:11:29,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:29,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:29,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:29,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:11:29,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:29,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:11:29,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:29,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:29,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:29,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:29,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:29,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:11:29,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:29,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:29,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:29,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:29,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:29,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:11:29,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:29,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:29,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:29,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:29,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:29,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:11:29,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:29,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:29,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:29,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:11:29,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:29,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:11:29,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:29,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:29,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:29,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:29,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:29,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 12:11:29,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:29,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:29,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:29,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:29,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:29,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:11:29,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:29,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:11:29,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:29,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:11:29,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:29,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-21 12:11:29,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:29,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:29,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:29,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:29,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:29,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:11:29,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:29,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:11:29,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:29,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:11:29,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:29,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 12:11:29,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:29,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:29,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:29,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-21 12:11:29,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:29,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-21 12:11:29,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:29,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:11:29,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:29,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-21 12:11:29,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:29,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:11:29,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:29,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:29,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:29,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-21 12:11:29,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:29,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 12:11:29,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:29,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:29,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:29,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:29,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:29,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:11:29,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:29,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:29,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:29,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:11:29,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:29,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:11:29,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:29,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:29,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:29,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:29,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:29,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:11:29,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:29,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:29,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:29,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:11:29,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:29,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:11:29,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:29,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:29,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:29,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:29,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:11:29,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:11:29,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:29,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:29,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:29,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:11:29,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:29,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:11:29,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:29,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:29,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:29,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:29,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:29,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:11:29,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:29,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:29,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:29,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:29,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:29,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:11:29,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:29,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:29,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:29,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:29,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:11:29,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-21 12:11:29,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:29,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:29,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:29,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:29,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:29,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:11:29,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:29,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:11:29,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:29,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:11:29,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:29,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-21 12:11:29,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:29,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:29,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:29,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:29,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:29,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:11:29,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:29,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:11:29,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:29,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:11:29,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:29,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:11:29,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933783092] [2020-09-21 12:11:29,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:11:29,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 12:11:29,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479473988] [2020-09-21 12:11:29,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:11:29,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:11:29,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:11:29,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:11:29,885 INFO L87 Difference]: Start difference. First operand 793 states and 958 transitions. Second operand 7 states. [2020-09-21 12:11:30,253 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:11:33,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:11:33,220 INFO L93 Difference]: Finished difference Result 1797 states and 2396 transitions. [2020-09-21 12:11:33,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-21 12:11:33,221 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-09-21 12:11:33,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:11:33,234 INFO L225 Difference]: With dead ends: 1797 [2020-09-21 12:11:33,235 INFO L226 Difference]: Without dead ends: 1794 [2020-09-21 12:11:33,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2020-09-21 12:11:33,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1794 states. [2020-09-21 12:11:33,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1794 to 1458. [2020-09-21 12:11:33,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1458 states. [2020-09-21 12:11:33,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 1775 transitions. [2020-09-21 12:11:33,636 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 1775 transitions. Word has length 94 [2020-09-21 12:11:33,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:11:33,637 INFO L479 AbstractCegarLoop]: Abstraction has 1458 states and 1775 transitions. [2020-09-21 12:11:33,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:11:33,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 1775 transitions. [2020-09-21 12:11:33,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-21 12:11:33,644 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:11:33,644 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:11:33,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 12:11:33,645 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:11:33,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:11:33,645 INFO L82 PathProgramCache]: Analyzing trace with hash 661449252, now seen corresponding path program 1 times [2020-09-21 12:11:33,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:11:33,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [883403622] [2020-09-21 12:11:33,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:11:33,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:33,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:33,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:34,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:34,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:34,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-09-21 12:11:34,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:11:34,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1026 [2020-09-21 12:11:34,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:34,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:11:34,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-09-21 12:11:34,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-21 12:11:34,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:35,017 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:11:35,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:11:35,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:35,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:35,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:35,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:35,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:35,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-21 12:11:35,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:35,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:35,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:35,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:35,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:35,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:11:35,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:35,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:35,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:35,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:11:35,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:35,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:11:35,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:35,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:35,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:35,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:35,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:35,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:11:35,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:35,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:35,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:35,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:11:35,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:35,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:11:35,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:35,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:35,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:35,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:35,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:35,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:11:35,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:35,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:35,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:35,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:35,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:35,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:11:35,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:35,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:35,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:35,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:35,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:35,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:11:35,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:35,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:35,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:35,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:11:35,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:35,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:11:35,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:35,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:35,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:35,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:35,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:35,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 12:11:35,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:35,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:35,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:35,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:35,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:35,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:11:35,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:35,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:35,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:35,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:35,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:35,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-21 12:11:35,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:35,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:35,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:35,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:35,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:35,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:11:35,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:35,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:35,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:35,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:35,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:35,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-21 12:11:35,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:35,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:35,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:35,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:11:35,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:35,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:11:35,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:35,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:35,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:35,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:35,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:35,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-21 12:11:35,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:35,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:35,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:35,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-21 12:11:35,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:35,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-21 12:11:35,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:35,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:11:35,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:35,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:11:35,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:35,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:11:35,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:35,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:35,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:35,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-21 12:11:35,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:35,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-21 12:11:35,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:35,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:11:35,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:35,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-21 12:11:35,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:35,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:11:35,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:35,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:35,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:35,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-21 12:11:35,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:35,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-21 12:11:35,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:35,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:35,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:35,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:35,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:35,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:11:35,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:35,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:35,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:35,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:11:35,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:35,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-21 12:11:35,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:35,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:35,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:35,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:35,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:35,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:11:35,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:35,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:35,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:35,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:11:35,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:35,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:11:35,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:35,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:35,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:35,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:35,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:11:35,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:11:35,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:35,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:35,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:35,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:11:35,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:35,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:11:35,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:35,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:35,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:35,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:35,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:11:35,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:11:35,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:35,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:35,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:35,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:35,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:35,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:11:35,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:35,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:35,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:35,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:35,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:11:35,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-21 12:11:35,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:35,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:35,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:35,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 12:11:35,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:35,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-21 12:11:35,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:35,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:11:35,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:35,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-21 12:11:35,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:35,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:11:35,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:35,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:35,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:35,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:35,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:35,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:11:35,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:35,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:35,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:35,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:35,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:35,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 12:11:35,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:35,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:35,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:35,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:35,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:35,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:11:35,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:35,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:35,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:35,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:35,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:35,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-09-21 12:11:35,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:35,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:35,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:35,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:35,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:35,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:11:35,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:35,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:11:35,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:11:35,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:11:35,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:35,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-09-21 12:11:35,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:35,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:35,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:35,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:35,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:35,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:11:35,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:35,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:35,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:11:35,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:35,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:35,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-21 12:11:35,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:11:35,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:11:35,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:11:35,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:11:35,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:11:35,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:11:35,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:11:35,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:11:35,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:11:35,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:11:35,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:11:35,479 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-21 12:11:35,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [883403622] [2020-09-21 12:11:35,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:11:35,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-21 12:11:35,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901620720] [2020-09-21 12:11:35,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 12:11:35,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:11:35,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 12:11:35,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:11:35,482 INFO L87 Difference]: Start difference. First operand 1458 states and 1775 transitions. Second operand 10 states. [2020-09-21 12:11:35,870 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 190