/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 enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product56.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 04:18:38,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 04:18:38,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 04:18:38,692 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 04:18:38,693 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 04:18:38,704 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 04:18:38,706 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 04:18:38,709 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 04:18:38,712 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 04:18:38,713 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 04:18:38,714 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 04:18:38,717 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 04:18:38,717 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 04:18:38,721 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 04:18:38,722 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 04:18:38,724 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 04:18:38,725 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 04:18:38,726 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 04:18:38,728 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 04:18:38,734 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 04:18:38,736 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 04:18:38,737 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 04:18:38,739 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 04:18:38,739 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 04:18:38,744 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 04:18:38,744 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 04:18:38,745 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 04:18:38,748 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 04:18:38,748 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 04:18:38,750 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 04:18:38,750 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 04:18:38,751 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 04:18:38,752 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 04:18:38,752 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 04:18:38,753 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 04:18:38,754 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 04:18:38,754 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 04:18:38,754 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 04:18:38,755 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 04:18:38,756 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 04:18:38,757 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 04:18:38,758 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 [2020-08-19 04:18:38,800 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 04:18:38,801 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 04:18:38,803 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 04:18:38,803 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 04:18:38,803 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 04:18:38,803 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 04:18:38,804 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 04:18:38,804 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 04:18:38,804 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 04:18:38,804 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 04:18:38,805 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 04:18:38,806 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 04:18:38,806 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 04:18:38,806 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 04:18:38,806 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 04:18:38,807 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 04:18:38,807 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 04:18:38,807 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 04:18:38,807 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 04:18:38,807 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 04:18:38,808 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 04:18:38,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:18:38,808 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 04:18:38,808 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 04:18:38,808 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 04:18:38,809 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 04:18:38,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 04:18:38,809 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 04:18:38,809 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 04:18:38,809 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 -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; [2020-08-19 04:18:39,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 04:18:39,098 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 04:18:39,104 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 04:18:39,106 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 04:18:39,107 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 04:18:39,107 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product56.cil.c [2020-08-19 04:18:39,170 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea4630a13/97bc38a4e0c3433a8e11f9039d024ec4/FLAGc14628950 [2020-08-19 04:18:39,669 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 04:18:39,669 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product56.cil.c [2020-08-19 04:18:39,683 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea4630a13/97bc38a4e0c3433a8e11f9039d024ec4/FLAGc14628950 [2020-08-19 04:18:40,001 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea4630a13/97bc38a4e0c3433a8e11f9039d024ec4 [2020-08-19 04:18:40,009 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 04:18:40,011 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 04:18:40,012 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 04:18:40,012 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 04:18:40,016 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 04:18:40,016 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:18:40" (1/1) ... [2020-08-19 04:18:40,019 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c07bf98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:18:40, skipping insertion in model container [2020-08-19 04:18:40,020 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:18:40" (1/1) ... [2020-08-19 04:18:40,027 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 04:18:40,071 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 04:18:40,467 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:18:40,480 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 04:18:40,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:18:40,641 INFO L208 MainTranslator]: Completed translation [2020-08-19 04:18:40,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:18:40 WrapperNode [2020-08-19 04:18:40,642 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 04:18:40,643 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 04:18:40,643 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 04:18:40,643 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 04:18:40,655 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:18:40" (1/1) ... [2020-08-19 04:18:40,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:18:40" (1/1) ... [2020-08-19 04:18:40,675 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:18:40" (1/1) ... [2020-08-19 04:18:40,675 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:18:40" (1/1) ... [2020-08-19 04:18:40,708 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:18:40" (1/1) ... [2020-08-19 04:18:40,719 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:18:40" (1/1) ... [2020-08-19 04:18:40,727 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:18:40" (1/1) ... [2020-08-19 04:18:40,747 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 04:18:40,748 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 04:18:40,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 04:18:40,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 04:18:40,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:18:40" (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 [2020-08-19 04:18:40,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 04:18:40,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 04:18:40,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 04:18:40,828 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 04:18:40,828 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 04:18:40,829 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 04:18:40,829 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 04:18:40,829 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 04:18:40,829 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 04:18:40,829 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 04:18:40,829 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 04:18:40,830 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 04:18:40,830 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 04:18:40,830 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 04:18:40,830 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-19 04:18:40,830 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 04:18:40,831 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 04:18:40,831 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 04:18:40,831 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 04:18:40,831 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 04:18:40,831 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 04:18:40,831 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 04:18:40,832 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 04:18:40,832 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 04:18:40,832 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 04:18:40,832 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 04:18:40,832 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 04:18:40,832 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 04:18:40,833 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 04:18:40,833 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 04:18:40,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 04:18:40,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-19 04:18:40,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-19 04:18:40,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-19 04:18:40,834 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 04:18:40,834 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 04:18:40,834 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 04:18:40,834 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 04:18:40,834 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 04:18:40,834 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 04:18:40,835 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 04:18:40,835 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 04:18:40,835 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 04:18:40,835 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 04:18:40,835 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 04:18:40,835 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 04:18:40,836 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 04:18:40,836 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 04:18:40,836 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 04:18:40,836 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 04:18:40,836 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 04:18:40,836 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 04:18:40,836 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 04:18:40,837 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 04:18:40,837 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 04:18:40,837 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 04:18:40,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 04:18:40,837 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 04:18:40,837 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 04:18:40,838 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 04:18:40,838 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 04:18:40,838 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 04:18:40,838 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 04:18:40,838 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 04:18:40,838 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-19 04:18:40,839 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-19 04:18:40,839 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 04:18:40,839 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 04:18:40,839 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 04:18:40,839 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 04:18:40,839 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 04:18:40,840 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-19 04:18:40,840 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 04:18:40,840 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 04:18:40,840 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 04:18:40,840 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 04:18:40,840 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 04:18:40,841 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 04:18:40,841 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 04:18:40,841 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 04:18:40,841 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-19 04:18:40,841 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 04:18:40,841 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 04:18:40,841 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 04:18:40,842 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 04:18:40,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 04:18:40,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 04:18:40,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 04:18:40,842 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 04:18:40,842 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 04:18:40,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 04:18:40,843 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 04:18:40,843 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 04:18:40,843 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 04:18:40,843 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 04:18:40,843 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 04:18:40,843 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 04:18:40,844 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 04:18:40,844 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 04:18:40,844 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 04:18:40,844 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 04:18:40,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 04:18:40,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 04:18:40,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 04:18:42,005 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 04:18:42,006 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 04:18:42,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:18:42 BoogieIcfgContainer [2020-08-19 04:18:42,014 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 04:18:42,016 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 04:18:42,017 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 04:18:42,020 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 04:18:42,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 04:18:40" (1/3) ... [2020-08-19 04:18:42,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49be1e98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:18:42, skipping insertion in model container [2020-08-19 04:18:42,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:18:40" (2/3) ... [2020-08-19 04:18:42,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49be1e98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:18:42, skipping insertion in model container [2020-08-19 04:18:42,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:18:42" (3/3) ... [2020-08-19 04:18:42,024 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product56.cil.c [2020-08-19 04:18:42,035 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 04:18:42,044 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 04:18:42,059 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 04:18:42,092 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 04:18:42,093 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 04:18:42,093 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 04:18:42,094 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 04:18:42,095 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 04:18:42,095 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 04:18:42,095 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 04:18:42,096 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 04:18:42,126 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states. [2020-08-19 04:18:42,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-19 04:18:42,146 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:18:42,150 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-19 04:18:42,151 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:18:42,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:18:42,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1747867680, now seen corresponding path program 1 times [2020-08-19 04:18:42,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:18:42,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148415122] [2020-08-19 04:18:42,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:18:42,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:42,865 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:18:42,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:18:42,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:42,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:18:42,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:42,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:18:42,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:42,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:18:42,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:42,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:18:42,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:42,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:18:42,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:42,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 04:18:42,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:42,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:18:42,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:42,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 04:18:42,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:42,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 04:18:42,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:43,006 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 04:18:43,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148415122] [2020-08-19 04:18:43,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:18:43,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 04:18:43,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216898507] [2020-08-19 04:18:43,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 04:18:43,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:18:43,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 04:18:43,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 04:18:43,034 INFO L87 Difference]: Start difference. First operand 209 states. Second operand 4 states. [2020-08-19 04:18:44,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:18:44,308 INFO L93 Difference]: Finished difference Result 366 states and 469 transitions. [2020-08-19 04:18:44,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 04:18:44,310 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-19 04:18:44,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:18:44,326 INFO L225 Difference]: With dead ends: 366 [2020-08-19 04:18:44,326 INFO L226 Difference]: Without dead ends: 201 [2020-08-19 04:18:44,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 04:18:44,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-08-19 04:18:44,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 166. [2020-08-19 04:18:44,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-08-19 04:18:44,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 196 transitions. [2020-08-19 04:18:44,448 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 196 transitions. Word has length 59 [2020-08-19 04:18:44,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:18:44,449 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 196 transitions. [2020-08-19 04:18:44,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 04:18:44,449 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 196 transitions. [2020-08-19 04:18:44,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-19 04:18:44,458 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:18:44,460 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-19 04:18:44,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 04:18:44,461 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:18:44,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:18:44,461 INFO L82 PathProgramCache]: Analyzing trace with hash 2102602730, now seen corresponding path program 1 times [2020-08-19 04:18:44,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:18:44,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1774813732] [2020-08-19 04:18:44,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:18:44,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:44,828 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:18:44,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:18:44,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:44,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:18:44,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:44,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:18:44,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:44,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:18:44,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:44,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:18:44,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:44,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:18:44,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:44,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 04:18:44,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:44,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:18:44,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:44,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 04:18:44,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:44,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 04:18:44,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:44,923 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 04:18:44,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1774813732] [2020-08-19 04:18:44,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:18:44,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 04:18:44,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922230578] [2020-08-19 04:18:44,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 04:18:44,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:18:44,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 04:18:44,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 04:18:44,928 INFO L87 Difference]: Start difference. First operand 166 states and 196 transitions. Second operand 5 states. [2020-08-19 04:18:45,470 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:18:46,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:18:46,563 INFO L93 Difference]: Finished difference Result 301 states and 369 transitions. [2020-08-19 04:18:46,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 04:18:46,564 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-19 04:18:46,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:18:46,567 INFO L225 Difference]: With dead ends: 301 [2020-08-19 04:18:46,567 INFO L226 Difference]: Without dead ends: 191 [2020-08-19 04:18:46,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-19 04:18:46,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-08-19 04:18:46,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 157. [2020-08-19 04:18:46,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-08-19 04:18:46,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 184 transitions. [2020-08-19 04:18:46,618 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 184 transitions. Word has length 60 [2020-08-19 04:18:46,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:18:46,618 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 184 transitions. [2020-08-19 04:18:46,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 04:18:46,619 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 184 transitions. [2020-08-19 04:18:46,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-19 04:18:46,621 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:18:46,621 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-19 04:18:46,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 04:18:46,622 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:18:46,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:18:46,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1388581610, now seen corresponding path program 1 times [2020-08-19 04:18:46,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:18:46,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [583945906] [2020-08-19 04:18:46,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:18:46,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:46,979 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:18:46,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:18:46,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:47,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:18:47,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:47,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:18:47,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:47,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:18:47,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:47,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:18:47,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:47,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:18:47,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:47,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 04:18:47,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:47,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:18:47,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:47,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 04:18:47,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:47,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 04:18:47,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:47,080 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 04:18:47,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [583945906] [2020-08-19 04:18:47,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:18:47,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 04:18:47,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211607383] [2020-08-19 04:18:47,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 04:18:47,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:18:47,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 04:18:47,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 04:18:47,082 INFO L87 Difference]: Start difference. First operand 157 states and 184 transitions. Second operand 9 states. [2020-08-19 04:18:47,452 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:18:47,767 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:18:48,031 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:18:48,275 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:18:49,217 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:18:51,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:18:51,318 INFO L93 Difference]: Finished difference Result 524 states and 649 transitions. [2020-08-19 04:18:51,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 04:18:51,319 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-19 04:18:51,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:18:51,325 INFO L225 Difference]: With dead ends: 524 [2020-08-19 04:18:51,325 INFO L226 Difference]: Without dead ends: 395 [2020-08-19 04:18:51,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-19 04:18:51,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2020-08-19 04:18:51,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 330. [2020-08-19 04:18:51,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330 states. [2020-08-19 04:18:51,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 400 transitions. [2020-08-19 04:18:51,435 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 400 transitions. Word has length 65 [2020-08-19 04:18:51,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:18:51,436 INFO L479 AbstractCegarLoop]: Abstraction has 330 states and 400 transitions. [2020-08-19 04:18:51,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 04:18:51,436 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 400 transitions. [2020-08-19 04:18:51,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-19 04:18:51,438 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:18:51,438 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-19 04:18:51,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 04:18:51,439 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:18:51,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:18:51,439 INFO L82 PathProgramCache]: Analyzing trace with hash -262157671, now seen corresponding path program 1 times [2020-08-19 04:18:51,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:18:51,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2035207574] [2020-08-19 04:18:51,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:18:51,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:51,763 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:18:51,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:18:51,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:51,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:18:51,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:51,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:18:51,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:51,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:18:51,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:51,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:18:51,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:51,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:18:51,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:51,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 04:18:51,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:51,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 04:18:51,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:51,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:18:51,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:51,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-19 04:18:51,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:51,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 04:18:51,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:51,859 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 04:18:51,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2035207574] [2020-08-19 04:18:51,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:18:51,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 04:18:51,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350407970] [2020-08-19 04:18:51,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 04:18:51,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:18:51,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 04:18:51,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 04:18:51,862 INFO L87 Difference]: Start difference. First operand 330 states and 400 transitions. Second operand 9 states. [2020-08-19 04:18:52,255 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:18:52,973 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:18:53,844 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:18:54,198 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:18:54,451 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:18:54,701 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:18:55,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:18:55,666 INFO L93 Difference]: Finished difference Result 843 states and 1098 transitions. [2020-08-19 04:18:55,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 04:18:55,666 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-19 04:18:55,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:18:55,672 INFO L225 Difference]: With dead ends: 843 [2020-08-19 04:18:55,673 INFO L226 Difference]: Without dead ends: 541 [2020-08-19 04:18:55,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-19 04:18:55,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2020-08-19 04:18:55,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 473. [2020-08-19 04:18:55,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2020-08-19 04:18:55,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 569 transitions. [2020-08-19 04:18:55,775 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 569 transitions. Word has length 70 [2020-08-19 04:18:55,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:18:55,776 INFO L479 AbstractCegarLoop]: Abstraction has 473 states and 569 transitions. [2020-08-19 04:18:55,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 04:18:55,776 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 569 transitions. [2020-08-19 04:18:55,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-19 04:18:55,780 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:18:55,780 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:18:55,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 04:18:55,781 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:18:55,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:18:55,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1621424268, now seen corresponding path program 1 times [2020-08-19 04:18:55,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:18:55,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1760527293] [2020-08-19 04:18:55,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:18:55,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:56,078 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:18:56,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:18:56,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:56,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:18:56,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:56,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:18:56,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:56,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:18:56,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:56,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:18:56,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:56,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:18:56,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:56,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 04:18:56,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:56,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:18:56,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:56,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 04:18:56,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:56,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:18:56,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:56,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:18:56,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:56,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:18:56,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:56,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:18:56,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:56,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:18:56,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:56,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-19 04:18:56,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:56,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 04:18:56,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:56,250 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 04:18:56,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1760527293] [2020-08-19 04:18:56,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:18:56,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 04:18:56,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178387882] [2020-08-19 04:18:56,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 04:18:56,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:18:56,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 04:18:56,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 04:18:56,254 INFO L87 Difference]: Start difference. First operand 473 states and 569 transitions. Second operand 9 states. [2020-08-19 04:18:57,401 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:18:57,631 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 04:18:57,870 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:18:58,102 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:18:59,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:18:59,039 INFO L93 Difference]: Finished difference Result 1007 states and 1277 transitions. [2020-08-19 04:18:59,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 04:18:59,042 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 98 [2020-08-19 04:18:59,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:18:59,048 INFO L225 Difference]: With dead ends: 1007 [2020-08-19 04:18:59,049 INFO L226 Difference]: Without dead ends: 562 [2020-08-19 04:18:59,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 04:18:59,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2020-08-19 04:18:59,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 486. [2020-08-19 04:18:59,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 486 states. [2020-08-19 04:18:59,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 583 transitions. [2020-08-19 04:18:59,172 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 583 transitions. Word has length 98 [2020-08-19 04:18:59,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:18:59,174 INFO L479 AbstractCegarLoop]: Abstraction has 486 states and 583 transitions. [2020-08-19 04:18:59,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 04:18:59,175 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 583 transitions. [2020-08-19 04:18:59,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-19 04:18:59,177 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:18:59,177 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:18:59,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 04:18:59,178 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:18:59,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:18:59,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1693810826, now seen corresponding path program 1 times [2020-08-19 04:18:59,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:18:59,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2135732598] [2020-08-19 04:18:59,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:18:59,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:59,462 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:18:59,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:18:59,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:59,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:18:59,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:59,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:18:59,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:59,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:18:59,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:59,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:18:59,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:59,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:18:59,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:59,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 04:18:59,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:59,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:18:59,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:59,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 04:18:59,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:59,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:18:59,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:59,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:18:59,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:59,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:18:59,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:59,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:18:59,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:59,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:18:59,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:59,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-19 04:18:59,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:59,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 04:18:59,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:59,633 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 04:18:59,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2135732598] [2020-08-19 04:18:59,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:18:59,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 04:18:59,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953674062] [2020-08-19 04:18:59,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 04:18:59,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:18:59,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 04:18:59,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-19 04:18:59,637 INFO L87 Difference]: Start difference. First operand 486 states and 583 transitions. Second operand 11 states. [2020-08-19 04:19:00,147 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:19:00,398 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:19:00,663 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:19:01,450 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:19:01,711 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:19:01,959 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:19:02,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:19:02,949 INFO L93 Difference]: Finished difference Result 1034 states and 1330 transitions. [2020-08-19 04:19:02,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 04:19:02,950 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 98 [2020-08-19 04:19:02,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:19:02,955 INFO L225 Difference]: With dead ends: 1034 [2020-08-19 04:19:02,955 INFO L226 Difference]: Without dead ends: 576 [2020-08-19 04:19:02,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 04:19:02,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2020-08-19 04:19:03,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 494. [2020-08-19 04:19:03,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 494 states. [2020-08-19 04:19:03,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 591 transitions. [2020-08-19 04:19:03,047 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 591 transitions. Word has length 98 [2020-08-19 04:19:03,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:19:03,048 INFO L479 AbstractCegarLoop]: Abstraction has 494 states and 591 transitions. [2020-08-19 04:19:03,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 04:19:03,049 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 591 transitions. [2020-08-19 04:19:03,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-19 04:19:03,050 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:19:03,051 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:19:03,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 04:19:03,051 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:19:03,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:19:03,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1364045065, now seen corresponding path program 1 times [2020-08-19 04:19:03,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:19:03,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1818102890] [2020-08-19 04:19:03,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:19:03,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:03,331 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:19:03,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:03,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:03,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:19:03,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:03,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:19:03,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:03,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:19:03,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:03,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:19:03,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:03,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:19:03,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:03,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 04:19:03,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:03,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:03,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:03,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 04:19:03,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:03,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:03,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:03,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:03,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:03,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:03,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:03,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:03,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:03,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:19:03,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:03,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-19 04:19:03,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:03,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 04:19:03,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:03,513 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 04:19:03,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1818102890] [2020-08-19 04:19:03,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:19:03,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 04:19:03,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288899696] [2020-08-19 04:19:03,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 04:19:03,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:19:03,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 04:19:03,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 04:19:03,516 INFO L87 Difference]: Start difference. First operand 494 states and 591 transitions. Second operand 7 states. [2020-08-19 04:19:03,862 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:19:04,431 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:19:06,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:19:06,816 INFO L93 Difference]: Finished difference Result 1535 states and 1984 transitions. [2020-08-19 04:19:06,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 04:19:06,817 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2020-08-19 04:19:06,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:19:06,826 INFO L225 Difference]: With dead ends: 1535 [2020-08-19 04:19:06,826 INFO L226 Difference]: Without dead ends: 1069 [2020-08-19 04:19:06,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-19 04:19:06,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2020-08-19 04:19:06,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 991. [2020-08-19 04:19:06,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 991 states. [2020-08-19 04:19:06,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1203 transitions. [2020-08-19 04:19:06,995 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1203 transitions. Word has length 98 [2020-08-19 04:19:06,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:19:06,996 INFO L479 AbstractCegarLoop]: Abstraction has 991 states and 1203 transitions. [2020-08-19 04:19:06,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 04:19:06,996 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1203 transitions. [2020-08-19 04:19:06,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-08-19 04:19:06,998 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:19:06,999 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:19:06,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 04:19:06,999 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:19:06,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:19:06,999 INFO L82 PathProgramCache]: Analyzing trace with hash 884836017, now seen corresponding path program 1 times [2020-08-19 04:19:07,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:19:07,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2136712717] [2020-08-19 04:19:07,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:19:07,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:07,310 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:19:07,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:07,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:07,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:19:07,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:07,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:19:07,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:07,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:19:07,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:07,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:19:07,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:07,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:19:07,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:07,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 04:19:07,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:07,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 04:19:07,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:07,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:07,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:07,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-19 04:19:07,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:07,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:07,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:07,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:07,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:07,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:07,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:07,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:07,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:07,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:19:07,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:07,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-19 04:19:07,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:07,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-19 04:19:07,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:07,470 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 04:19:07,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2136712717] [2020-08-19 04:19:07,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:19:07,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 04:19:07,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485396993] [2020-08-19 04:19:07,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 04:19:07,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:19:07,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 04:19:07,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-19 04:19:07,472 INFO L87 Difference]: Start difference. First operand 991 states and 1203 transitions. Second operand 12 states. [2020-08-19 04:19:08,049 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:19:08,693 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:19:09,382 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:19:09,728 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:19:09,985 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 04:19:10,283 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:19:10,544 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:19:12,764 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:19:13,074 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:19:13,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:19:13,795 INFO L93 Difference]: Finished difference Result 2813 states and 3636 transitions. [2020-08-19 04:19:13,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-19 04:19:13,796 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 102 [2020-08-19 04:19:13,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:19:13,813 INFO L225 Difference]: With dead ends: 2813 [2020-08-19 04:19:13,813 INFO L226 Difference]: Without dead ends: 2052 [2020-08-19 04:19:13,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-19 04:19:13,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2052 states. [2020-08-19 04:19:14,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2052 to 1740. [2020-08-19 04:19:14,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1740 states. [2020-08-19 04:19:14,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1740 states to 1740 states and 2094 transitions. [2020-08-19 04:19:14,222 INFO L78 Accepts]: Start accepts. Automaton has 1740 states and 2094 transitions. Word has length 102 [2020-08-19 04:19:14,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:19:14,224 INFO L479 AbstractCegarLoop]: Abstraction has 1740 states and 2094 transitions. [2020-08-19 04:19:14,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 04:19:14,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1740 states and 2094 transitions. [2020-08-19 04:19:14,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-08-19 04:19:14,229 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:19:14,231 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:19:14,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 04:19:14,231 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:19:14,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:19:14,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1627137653, now seen corresponding path program 1 times [2020-08-19 04:19:14,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:19:14,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [48198823] [2020-08-19 04:19:14,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:19:14,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:14,647 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:19:14,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:14,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:14,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:19:14,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:14,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:19:14,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:14,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:19:14,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:14,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:19:14,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:14,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:19:14,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:14,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 04:19:14,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:14,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 04:19:14,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:14,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:14,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:14,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:14,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:14,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 04:19:14,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:14,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:14,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:14,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:14,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:14,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:14,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:14,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:14,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:14,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:19:14,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:14,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 04:19:14,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:14,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:14,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:14,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-19 04:19:14,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:14,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:14,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:14,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-19 04:19:14,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:14,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-19 04:19:14,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:14,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:14,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:14,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:14,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:14,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 04:19:14,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:14,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:14,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:14,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:14,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:14,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 04:19:14,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:14,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:14,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:14,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-19 04:19:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:14,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-08-19 04:19:14,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:14,945 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 22 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-19 04:19:14,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [48198823] [2020-08-19 04:19:14,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 04:19:14,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 04:19:14,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021621793] [2020-08-19 04:19:14,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 04:19:14,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:19:14,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 04:19:14,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-19 04:19:14,949 INFO L87 Difference]: Start difference. First operand 1740 states and 2094 transitions. Second operand 16 states. [2020-08-19 04:19:15,604 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 04:19:16,067 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 04:19:16,432 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 04:19:16,787 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 04:19:17,505 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:19:17,806 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:19:18,151 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 04:19:18,444 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 04:19:19,639 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:19:20,352 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:19:20,646 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:19:20,974 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 04:19:21,535 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:19:21,928 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 04:19:22,698 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 04:19:22,978 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 04:19:23,572 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 04:19:24,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:19:24,384 INFO L93 Difference]: Finished difference Result 3741 states and 4632 transitions. [2020-08-19 04:19:24,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-08-19 04:19:24,385 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 180 [2020-08-19 04:19:24,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:19:24,399 INFO L225 Difference]: With dead ends: 3741 [2020-08-19 04:19:24,400 INFO L226 Difference]: Without dead ends: 2219 [2020-08-19 04:19:24,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 665 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=589, Invalid=2167, Unknown=0, NotChecked=0, Total=2756 [2020-08-19 04:19:24,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2219 states. [2020-08-19 04:19:24,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2219 to 2027. [2020-08-19 04:19:24,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2027 states. [2020-08-19 04:19:24,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2027 states to 2027 states and 2384 transitions. [2020-08-19 04:19:24,914 INFO L78 Accepts]: Start accepts. Automaton has 2027 states and 2384 transitions. Word has length 180 [2020-08-19 04:19:24,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:19:24,915 INFO L479 AbstractCegarLoop]: Abstraction has 2027 states and 2384 transitions. [2020-08-19 04:19:24,915 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-19 04:19:24,915 INFO L276 IsEmpty]: Start isEmpty. Operand 2027 states and 2384 transitions. [2020-08-19 04:19:24,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-08-19 04:19:24,925 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:19:24,926 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-19 04:19:24,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 04:19:24,926 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:19:24,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:19:24,927 INFO L82 PathProgramCache]: Analyzing trace with hash 357529335, now seen corresponding path program 1 times [2020-08-19 04:19:24,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:19:24,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1228617060] [2020-08-19 04:19:24,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:19:24,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:25,285 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:19:25,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:25,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:25,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:19:25,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:25,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:19:25,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:25,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:19:25,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:25,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:19:25,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:25,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:19:25,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:25,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 04:19:25,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:25,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 04:19:25,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:25,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:25,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:25,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:25,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:25,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 04:19:25,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:25,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:25,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:25,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:25,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:25,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:25,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:25,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:25,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:25,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:19:25,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:25,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 04:19:25,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:25,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:25,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:25,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-19 04:19:25,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:25,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:25,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:25,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:25,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:25,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:19:25,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:25,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 04:19:25,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:25,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:25,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:25,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:25,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:25,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 04:19:25,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:25,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:25,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:25,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:25,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:25,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 04:19:25,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:25,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:25,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:25,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 04:19:25,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:25,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:25,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:25,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-19 04:19:25,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:25,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:25,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:25,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:25,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:25,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:19:25,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:25,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 04:19:25,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:25,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:25,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:25,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:25,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:25,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 04:19:25,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:25,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 04:19:25,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:25,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:25,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:25,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-19 04:19:25,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:25,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:25,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:25,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-08-19 04:19:25,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:25,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:25,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:25,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:25,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:25,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:25,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:25,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:25,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:25,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:19:25,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:25,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-08-19 04:19:25,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:25,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2020-08-19 04:19:25,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:25,875 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 83 proven. 29 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2020-08-19 04:19:25,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1228617060] [2020-08-19 04:19:25,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 04:19:25,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-19 04:19:25,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99714445] [2020-08-19 04:19:25,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 04:19:25,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:19:25,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 04:19:25,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-19 04:19:25,877 INFO L87 Difference]: Start difference. First operand 2027 states and 2384 transitions. Second operand 15 states. [2020-08-19 04:19:27,192 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:19:27,478 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 04:19:27,738 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 04:19:27,995 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:19:29,123 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 04:19:31,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:19:31,238 INFO L93 Difference]: Finished difference Result 5499 states and 6729 transitions. [2020-08-19 04:19:31,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-19 04:19:31,239 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 301 [2020-08-19 04:19:31,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:19:31,257 INFO L225 Difference]: With dead ends: 5499 [2020-08-19 04:19:31,257 INFO L226 Difference]: Without dead ends: 3170 [2020-08-19 04:19:31,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 107 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2020-08-19 04:19:31,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3170 states. [2020-08-19 04:19:31,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3170 to 2752. [2020-08-19 04:19:31,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2752 states. [2020-08-19 04:19:31,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2752 states to 2752 states and 3317 transitions. [2020-08-19 04:19:31,854 INFO L78 Accepts]: Start accepts. Automaton has 2752 states and 3317 transitions. Word has length 301 [2020-08-19 04:19:31,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:19:31,855 INFO L479 AbstractCegarLoop]: Abstraction has 2752 states and 3317 transitions. [2020-08-19 04:19:31,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 04:19:31,855 INFO L276 IsEmpty]: Start isEmpty. Operand 2752 states and 3317 transitions. [2020-08-19 04:19:31,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-08-19 04:19:31,867 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:19:31,867 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-19 04:19:31,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 04:19:31,868 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:19:31,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:19:31,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1453218862, now seen corresponding path program 1 times [2020-08-19 04:19:31,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:19:31,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1976495314] [2020-08-19 04:19:31,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:19:31,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:32,258 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:19:32,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:32,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:32,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:19:32,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:32,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:19:32,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:32,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:19:32,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:32,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:19:32,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:32,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:19:32,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:32,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 04:19:32,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:32,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 04:19:32,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:32,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:32,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:32,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:32,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:32,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 04:19:32,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:32,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:32,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:32,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:32,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:32,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:32,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:32,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:32,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:32,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:19:32,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:32,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 04:19:32,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:32,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:32,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:32,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-19 04:19:32,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:32,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:32,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:32,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:32,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:32,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:19:32,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:32,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 04:19:32,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:32,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:32,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:32,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:32,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:32,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 04:19:32,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:32,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:32,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:32,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:32,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:32,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 04:19:32,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:32,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:32,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:32,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 04:19:32,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:32,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:32,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:32,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 04:19:32,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:32,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-08-19 04:19:32,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:32,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:32,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:32,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:32,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:32,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:19:32,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:32,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 04:19:32,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:32,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:32,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:32,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:32,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:32,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 04:19:32,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:32,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 04:19:32,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:32,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:32,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:32,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-19 04:19:32,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:32,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-08-19 04:19:32,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:32,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:32,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:32,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2020-08-19 04:19:32,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:32,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:32,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:32,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:32,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:32,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:32,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:32,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:32,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:32,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:19:32,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:32,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-08-19 04:19:32,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:32,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-08-19 04:19:32,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:32,824 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 91 proven. 42 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2020-08-19 04:19:32,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1976495314] [2020-08-19 04:19:32,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 04:19:32,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 04:19:32,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107283188] [2020-08-19 04:19:32,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 04:19:32,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:19:32,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 04:19:32,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-19 04:19:32,832 INFO L87 Difference]: Start difference. First operand 2752 states and 3317 transitions. Second operand 16 states. [2020-08-19 04:19:33,593 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:19:33,914 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 04:19:34,179 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 04:19:34,442 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 04:19:35,119 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:19:36,161 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:19:36,468 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:19:36,728 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191