/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product41.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 18:47:11,770 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 18:47:11,773 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 18:47:11,797 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 18:47:11,797 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 18:47:11,798 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 18:47:11,799 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 18:47:11,801 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 18:47:11,803 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 18:47:11,804 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 18:47:11,805 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 18:47:11,806 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 18:47:11,807 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 18:47:11,808 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 18:47:11,809 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 18:47:11,810 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 18:47:11,811 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 18:47:11,811 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 18:47:11,813 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 18:47:11,818 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 18:47:11,820 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 18:47:11,821 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 18:47:11,822 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 18:47:11,823 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 18:47:11,825 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 18:47:11,825 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 18:47:11,826 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 18:47:11,827 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 18:47:11,827 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 18:47:11,828 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 18:47:11,828 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 18:47:11,829 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 18:47:11,830 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 18:47:11,830 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 18:47:11,831 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 18:47:11,831 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 18:47:11,832 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 18:47:11,832 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 18:47:11,833 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 18:47:11,833 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 18:47:11,834 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 18:47:11,835 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 [2020-08-21 18:47:11,858 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 18:47:11,858 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 18:47:11,860 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 18:47:11,860 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 18:47:11,860 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 18:47:11,860 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 18:47:11,861 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 18:47:11,861 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 18:47:11,861 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 18:47:11,861 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 18:47:11,861 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 18:47:11,862 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 18:47:11,862 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 18:47:11,862 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 18:47:11,862 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 18:47:11,862 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 18:47:11,863 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 18:47:11,863 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 18:47:11,863 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 18:47:11,863 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 18:47:11,863 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 18:47:11,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 18:47:11,864 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 18:47:11,864 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 18:47:11,864 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 18:47:11,864 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 18:47:11,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 18:47:11,865 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 18:47:11,865 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 18:47:11,865 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=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; [2020-08-21 18:47:12,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 18:47:12,218 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 18:47:12,222 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 18:47:12,224 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 18:47:12,224 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 18:47:12,225 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product41.cil.c [2020-08-21 18:47:12,298 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eaff48795/cf1d6e1c90fa4d52a7b5e17e8217b3f1/FLAGc931e9096 [2020-08-21 18:47:12,825 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 18:47:12,826 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product41.cil.c [2020-08-21 18:47:12,849 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eaff48795/cf1d6e1c90fa4d52a7b5e17e8217b3f1/FLAGc931e9096 [2020-08-21 18:47:13,115 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eaff48795/cf1d6e1c90fa4d52a7b5e17e8217b3f1 [2020-08-21 18:47:13,125 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 18:47:13,126 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 18:47:13,128 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 18:47:13,128 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 18:47:13,131 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 18:47:13,132 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:47:13" (1/1) ... [2020-08-21 18:47:13,135 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4207e6a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:47:13, skipping insertion in model container [2020-08-21 18:47:13,136 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:47:13" (1/1) ... [2020-08-21 18:47:13,144 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 18:47:13,210 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 18:47:13,512 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:47:13,534 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 18:47:13,718 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:47:13,760 INFO L208 MainTranslator]: Completed translation [2020-08-21 18:47:13,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:47:13 WrapperNode [2020-08-21 18:47:13,762 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 18:47:13,765 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 18:47:13,765 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 18:47:13,765 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 18:47:13,776 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:47:13" (1/1) ... [2020-08-21 18:47:13,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:47:13" (1/1) ... [2020-08-21 18:47:13,798 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:47:13" (1/1) ... [2020-08-21 18:47:13,798 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:47:13" (1/1) ... [2020-08-21 18:47:13,832 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:47:13" (1/1) ... [2020-08-21 18:47:13,842 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:47:13" (1/1) ... [2020-08-21 18:47:13,848 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:47:13" (1/1) ... [2020-08-21 18:47:13,861 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 18:47:13,865 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 18:47:13,865 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 18:47:13,865 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 18:47:13,867 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:47:13" (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 [2020-08-21 18:47:13,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 18:47:13,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 18:47:13,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 18:47:13,948 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 18:47:13,948 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 18:47:13,949 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 18:47:13,949 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 18:47:13,950 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 18:47:13,950 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 18:47:13,951 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 18:47:13,951 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-21 18:47:13,951 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 18:47:13,951 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 18:47:13,951 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 18:47:13,952 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 18:47:13,953 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 18:47:13,953 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 18:47:13,953 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 18:47:13,953 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-21 18:47:13,953 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 18:47:13,953 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 18:47:13,954 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 18:47:13,954 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 18:47:13,954 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 18:47:13,954 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 18:47:13,955 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 18:47:13,955 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 18:47:13,955 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 18:47:13,956 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 18:47:13,956 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 18:47:13,956 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 18:47:13,956 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 18:47:13,956 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 18:47:13,957 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 18:47:13,957 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 18:47:13,957 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 18:47:13,957 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 18:47:13,957 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 18:47:13,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 18:47:13,958 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 18:47:13,958 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 18:47:13,958 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 18:47:13,958 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 18:47:13,958 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 18:47:13,958 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 18:47:13,958 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 18:47:13,959 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 18:47:13,959 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 18:47:13,959 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 18:47:13,959 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 18:47:13,959 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 18:47:13,959 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 18:47:13,959 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 18:47:13,960 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 18:47:13,960 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-21 18:47:13,960 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 18:47:13,961 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 18:47:13,961 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 18:47:13,961 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-21 18:47:13,961 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 18:47:13,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 18:47:13,961 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 18:47:13,962 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 18:47:13,962 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 18:47:13,962 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 18:47:13,962 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 18:47:13,962 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 18:47:13,962 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 18:47:13,962 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 18:47:13,963 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 18:47:13,963 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 18:47:13,963 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 18:47:13,964 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 18:47:13,964 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 18:47:13,964 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 18:47:13,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 18:47:13,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 18:47:13,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 18:47:13,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 18:47:13,966 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 18:47:13,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 18:47:13,966 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 18:47:13,967 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 18:47:13,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 18:47:13,968 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 18:47:13,968 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 18:47:13,968 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 18:47:13,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 18:47:13,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 18:47:13,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 18:47:15,019 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 18:47:15,019 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 18:47:15,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:47:15 BoogieIcfgContainer [2020-08-21 18:47:15,025 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 18:47:15,026 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 18:47:15,027 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 18:47:15,030 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 18:47:15,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 06:47:13" (1/3) ... [2020-08-21 18:47:15,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54f6dcc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:47:15, skipping insertion in model container [2020-08-21 18:47:15,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:47:13" (2/3) ... [2020-08-21 18:47:15,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54f6dcc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:47:15, skipping insertion in model container [2020-08-21 18:47:15,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:47:15" (3/3) ... [2020-08-21 18:47:15,034 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product41.cil.c [2020-08-21 18:47:15,045 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 18:47:15,054 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 18:47:15,068 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 18:47:15,095 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 18:47:15,095 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 18:47:15,095 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 18:47:15,095 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 18:47:15,096 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 18:47:15,096 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 18:47:15,096 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 18:47:15,096 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 18:47:15,124 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2020-08-21 18:47:15,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 18:47:15,135 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:47:15,137 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:47:15,137 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:47:15,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:47:15,144 INFO L82 PathProgramCache]: Analyzing trace with hash 177325019, now seen corresponding path program 1 times [2020-08-21 18:47:15,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:47:15,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1525173144] [2020-08-21 18:47:15,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:47:15,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:15,853 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:47:15,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:47:15,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:15,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:47:15,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:15,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:47:15,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:15,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:47:15,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:15,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:47:15,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:15,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 18:47:15,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:15,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 18:47:15,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:15,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 18:47:15,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:15,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:47:15,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1525173144] [2020-08-21 18:47:15,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:47:15,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 18:47:15,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473405328] [2020-08-21 18:47:15,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 18:47:15,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:47:15,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 18:47:15,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 18:47:16,001 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 3 states. [2020-08-21 18:47:17,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:47:17,118 INFO L93 Difference]: Finished difference Result 287 states and 375 transitions. [2020-08-21 18:47:17,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 18:47:17,120 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-21 18:47:17,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:47:17,134 INFO L225 Difference]: With dead ends: 287 [2020-08-21 18:47:17,134 INFO L226 Difference]: Without dead ends: 155 [2020-08-21 18:47:17,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 18:47:17,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-08-21 18:47:17,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 123. [2020-08-21 18:47:17,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-21 18:47:17,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 144 transitions. [2020-08-21 18:47:17,224 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 144 transitions. Word has length 52 [2020-08-21 18:47:17,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:47:17,225 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 144 transitions. [2020-08-21 18:47:17,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 18:47:17,225 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 144 transitions. [2020-08-21 18:47:17,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-21 18:47:17,229 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:47:17,229 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:47:17,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 18:47:17,230 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:47:17,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:47:17,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1842882407, now seen corresponding path program 1 times [2020-08-21 18:47:17,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:47:17,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [607919946] [2020-08-21 18:47:17,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:47:17,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:17,582 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:47:17,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:47:17,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:17,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:47:17,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:17,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:47:17,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:17,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:47:17,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:17,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:47:17,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:17,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 18:47:17,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:17,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 18:47:17,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:17,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 18:47:17,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:17,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:47:17,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [607919946] [2020-08-21 18:47:17,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:47:17,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 18:47:17,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325873759] [2020-08-21 18:47:17,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 18:47:17,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:47:17,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 18:47:17,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 18:47:17,657 INFO L87 Difference]: Start difference. First operand 123 states and 144 transitions. Second operand 4 states. [2020-08-21 18:47:18,092 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:47:18,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:47:18,838 INFO L93 Difference]: Finished difference Result 220 states and 266 transitions. [2020-08-21 18:47:18,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 18:47:18,839 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-21 18:47:18,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:47:18,843 INFO L225 Difference]: With dead ends: 220 [2020-08-21 18:47:18,843 INFO L226 Difference]: Without dead ends: 139 [2020-08-21 18:47:18,845 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 18:47:18,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-08-21 18:47:18,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 114. [2020-08-21 18:47:18,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-21 18:47:18,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 132 transitions. [2020-08-21 18:47:18,881 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 132 transitions. Word has length 53 [2020-08-21 18:47:18,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:47:18,882 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 132 transitions. [2020-08-21 18:47:18,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 18:47:18,882 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 132 transitions. [2020-08-21 18:47:18,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-21 18:47:18,884 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:47:18,884 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:47:18,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 18:47:18,885 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:47:18,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:47:18,885 INFO L82 PathProgramCache]: Analyzing trace with hash 774651483, now seen corresponding path program 1 times [2020-08-21 18:47:18,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:47:18,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545303636] [2020-08-21 18:47:18,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:47:18,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:19,266 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:47:19,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:47:19,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:19,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:47:19,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:19,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:47:19,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:19,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:47:19,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:19,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:47:19,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:19,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:47:19,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:19,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 18:47:19,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:19,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 18:47:19,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:19,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:47:19,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545303636] [2020-08-21 18:47:19,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:47:19,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 18:47:19,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111045122] [2020-08-21 18:47:19,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 18:47:19,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:47:19,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 18:47:19,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 18:47:19,404 INFO L87 Difference]: Start difference. First operand 114 states and 132 transitions. Second operand 8 states. [2020-08-21 18:47:19,764 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:47:20,056 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:47:20,305 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:47:20,532 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:47:21,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:47:21,606 INFO L93 Difference]: Finished difference Result 229 states and 280 transitions. [2020-08-21 18:47:21,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 18:47:21,607 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-21 18:47:21,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:47:21,610 INFO L225 Difference]: With dead ends: 229 [2020-08-21 18:47:21,611 INFO L226 Difference]: Without dead ends: 139 [2020-08-21 18:47:21,612 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 18:47:21,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-08-21 18:47:21,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 114. [2020-08-21 18:47:21,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-21 18:47:21,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 131 transitions. [2020-08-21 18:47:21,645 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 131 transitions. Word has length 57 [2020-08-21 18:47:21,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:47:21,646 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 131 transitions. [2020-08-21 18:47:21,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 18:47:21,646 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 131 transitions. [2020-08-21 18:47:21,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-21 18:47:21,648 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:47:21,648 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:47:21,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 18:47:21,649 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:47:21,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:47:21,649 INFO L82 PathProgramCache]: Analyzing trace with hash -771193848, now seen corresponding path program 1 times [2020-08-21 18:47:21,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:47:21,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [445995187] [2020-08-21 18:47:21,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:47:21,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:21,958 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:47:21,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:47:21,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:22,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:47:22,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:22,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:47:22,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:22,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:47:22,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:22,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:47:22,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:22,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 18:47:22,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:22,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:47:22,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:22,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 18:47:22,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:22,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 18:47:22,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:22,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-21 18:47:22,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:22,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:47:22,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [445995187] [2020-08-21 18:47:22,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:47:22,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 18:47:22,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693119911] [2020-08-21 18:47:22,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 18:47:22,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:47:22,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 18:47:22,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 18:47:22,079 INFO L87 Difference]: Start difference. First operand 114 states and 131 transitions. Second operand 6 states. [2020-08-21 18:47:22,439 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:47:23,578 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:47:24,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:47:24,140 INFO L93 Difference]: Finished difference Result 324 states and 398 transitions. [2020-08-21 18:47:24,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 18:47:24,140 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-08-21 18:47:24,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:47:24,149 INFO L225 Difference]: With dead ends: 324 [2020-08-21 18:47:24,149 INFO L226 Difference]: Without dead ends: 234 [2020-08-21 18:47:24,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-21 18:47:24,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-08-21 18:47:24,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 193. [2020-08-21 18:47:24,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-08-21 18:47:24,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 222 transitions. [2020-08-21 18:47:24,205 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 222 transitions. Word has length 65 [2020-08-21 18:47:24,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:47:24,206 INFO L479 AbstractCegarLoop]: Abstraction has 193 states and 222 transitions. [2020-08-21 18:47:24,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 18:47:24,206 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 222 transitions. [2020-08-21 18:47:24,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-21 18:47:24,208 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:47:24,208 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:47:24,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 18:47:24,209 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:47:24,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:47:24,209 INFO L82 PathProgramCache]: Analyzing trace with hash -913158347, now seen corresponding path program 1 times [2020-08-21 18:47:24,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:47:24,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660147537] [2020-08-21 18:47:24,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:47:24,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:24,490 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:47:24,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:47:24,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:24,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:47:24,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:24,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:47:24,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:24,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:47:24,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:24,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:47:24,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:24,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 18:47:24,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:24,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:47:24,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:24,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:47:24,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:24,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:47:24,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:24,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-21 18:47:24,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:24,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 18:47:24,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:24,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 18:47:24,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:24,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:47:24,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660147537] [2020-08-21 18:47:24,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:47:24,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 18:47:24,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857067352] [2020-08-21 18:47:24,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 18:47:24,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:47:24,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 18:47:24,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 18:47:24,638 INFO L87 Difference]: Start difference. First operand 193 states and 222 transitions. Second operand 8 states. [2020-08-21 18:47:25,087 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:47:26,400 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:47:26,662 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:47:26,903 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:47:27,117 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:47:27,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:47:27,761 INFO L93 Difference]: Finished difference Result 528 states and 662 transitions. [2020-08-21 18:47:27,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 18:47:27,762 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-08-21 18:47:27,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:47:27,767 INFO L225 Difference]: With dead ends: 528 [2020-08-21 18:47:27,767 INFO L226 Difference]: Without dead ends: 359 [2020-08-21 18:47:27,768 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-21 18:47:27,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2020-08-21 18:47:27,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 319. [2020-08-21 18:47:27,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-08-21 18:47:27,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 373 transitions. [2020-08-21 18:47:27,831 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 373 transitions. Word has length 79 [2020-08-21 18:47:27,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:47:27,832 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 373 transitions. [2020-08-21 18:47:27,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 18:47:27,832 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 373 transitions. [2020-08-21 18:47:27,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-21 18:47:27,834 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:47:27,834 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:47:27,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 18:47:27,835 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:47:27,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:47:27,835 INFO L82 PathProgramCache]: Analyzing trace with hash 421166267, now seen corresponding path program 1 times [2020-08-21 18:47:27,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:47:27,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223992871] [2020-08-21 18:47:27,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:47:27,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:28,128 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:47:28,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:47:28,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:28,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:47:28,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:28,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:47:28,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:28,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:47:28,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:28,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:47:28,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:28,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 18:47:28,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:28,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 18:47:28,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:28,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:47:28,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:28,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:47:28,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:28,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:47:28,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:28,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-21 18:47:28,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:28,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-21 18:47:28,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:28,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 18:47:28,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:28,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:47:28,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [223992871] [2020-08-21 18:47:28,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:47:28,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 18:47:28,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440094107] [2020-08-21 18:47:28,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 18:47:28,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:47:28,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 18:47:28,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-08-21 18:47:28,242 INFO L87 Difference]: Start difference. First operand 319 states and 373 transitions. Second operand 9 states. [2020-08-21 18:47:28,686 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:47:29,240 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:47:30,807 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:47:32,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:47:32,248 INFO L93 Difference]: Finished difference Result 770 states and 989 transitions. [2020-08-21 18:47:32,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 18:47:32,249 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-21 18:47:32,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:47:32,257 INFO L225 Difference]: With dead ends: 770 [2020-08-21 18:47:32,257 INFO L226 Difference]: Without dead ends: 590 [2020-08-21 18:47:32,259 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-08-21 18:47:32,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2020-08-21 18:47:32,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 524. [2020-08-21 18:47:32,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2020-08-21 18:47:32,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 634 transitions. [2020-08-21 18:47:32,410 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 634 transitions. Word has length 83 [2020-08-21 18:47:32,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:47:32,410 INFO L479 AbstractCegarLoop]: Abstraction has 524 states and 634 transitions. [2020-08-21 18:47:32,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 18:47:32,411 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 634 transitions. [2020-08-21 18:47:32,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-21 18:47:32,412 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:47:32,412 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:47:32,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 18:47:32,413 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:47:32,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:47:32,413 INFO L82 PathProgramCache]: Analyzing trace with hash 750932028, now seen corresponding path program 1 times [2020-08-21 18:47:32,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:47:32,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180725443] [2020-08-21 18:47:32,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:47:32,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:32,656 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:47:32,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:47:32,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:32,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:47:32,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:32,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:47:32,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:32,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:47:32,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:32,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:47:32,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:32,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 18:47:32,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:32,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 18:47:32,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:32,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:47:32,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:32,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:47:32,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:32,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:47:32,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:32,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-21 18:47:32,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:32,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-21 18:47:32,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:32,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 18:47:32,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:32,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:47:32,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1180725443] [2020-08-21 18:47:32,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:47:32,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 18:47:32,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189216481] [2020-08-21 18:47:32,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 18:47:32,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:47:32,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 18:47:32,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-21 18:47:32,789 INFO L87 Difference]: Start difference. First operand 524 states and 634 transitions. Second operand 8 states. [2020-08-21 18:47:33,740 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:47:33,975 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:47:34,255 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:47:35,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:47:35,205 INFO L93 Difference]: Finished difference Result 947 states and 1187 transitions. [2020-08-21 18:47:35,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 18:47:35,206 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 83 [2020-08-21 18:47:35,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:47:35,211 INFO L225 Difference]: With dead ends: 947 [2020-08-21 18:47:35,212 INFO L226 Difference]: Without dead ends: 566 [2020-08-21 18:47:35,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-21 18:47:35,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2020-08-21 18:47:35,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 524. [2020-08-21 18:47:35,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2020-08-21 18:47:35,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 633 transitions. [2020-08-21 18:47:35,334 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 633 transitions. Word has length 83 [2020-08-21 18:47:35,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:47:35,335 INFO L479 AbstractCegarLoop]: Abstraction has 524 states and 633 transitions. [2020-08-21 18:47:35,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 18:47:35,335 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 633 transitions. [2020-08-21 18:47:35,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-21 18:47:35,338 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:47:35,338 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:47:35,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 18:47:35,339 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:47:35,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:47:35,339 INFO L82 PathProgramCache]: Analyzing trace with hash 678545470, now seen corresponding path program 1 times [2020-08-21 18:47:35,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:47:35,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [259837114] [2020-08-21 18:47:35,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:47:35,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:35,644 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:47:35,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:47:35,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:35,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:47:35,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:35,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:47:35,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:35,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:47:35,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:35,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:47:35,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:35,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 18:47:35,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:35,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 18:47:35,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:35,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:47:35,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:35,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:47:35,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:35,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:47:35,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:35,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-21 18:47:35,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:35,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-21 18:47:35,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:35,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 18:47:35,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:35,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:47:35,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [259837114] [2020-08-21 18:47:35,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:47:35,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 18:47:35,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445848461] [2020-08-21 18:47:35,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 18:47:35,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:47:35,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 18:47:35,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-21 18:47:35,827 INFO L87 Difference]: Start difference. First operand 524 states and 633 transitions. Second operand 12 states. [2020-08-21 18:47:36,423 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:47:36,674 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:47:36,907 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:47:37,560 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:47:37,822 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:47:38,114 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:47:38,360 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:47:39,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:47:39,562 INFO L93 Difference]: Finished difference Result 1071 states and 1335 transitions. [2020-08-21 18:47:39,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 18:47:39,563 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 83 [2020-08-21 18:47:39,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:47:39,567 INFO L225 Difference]: With dead ends: 1071 [2020-08-21 18:47:39,567 INFO L226 Difference]: Without dead ends: 571 [2020-08-21 18:47:39,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-21 18:47:39,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2020-08-21 18:47:39,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 531. [2020-08-21 18:47:39,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 531 states. [2020-08-21 18:47:39,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 640 transitions. [2020-08-21 18:47:39,673 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 640 transitions. Word has length 83 [2020-08-21 18:47:39,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:47:39,674 INFO L479 AbstractCegarLoop]: Abstraction has 531 states and 640 transitions. [2020-08-21 18:47:39,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 18:47:39,674 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 640 transitions. [2020-08-21 18:47:39,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-08-21 18:47:39,680 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:47:39,680 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] [2020-08-21 18:47:39,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 18:47:39,681 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:47:39,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:47:39,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1174041569, now seen corresponding path program 1 times [2020-08-21 18:47:39,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:47:39,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [654556804] [2020-08-21 18:47:39,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:47:39,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:39,933 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:47:39,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:47:39,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:39,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:47:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:39,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:47:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:39,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:47:39,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:39,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:47:39,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:39,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 18:47:39,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:39,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 18:47:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:40,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:47:40,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:40,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:47:40,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:40,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:47:40,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:40,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:47:40,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:40,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:47:40,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:40,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 18:47:40,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:40,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 18:47:40,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:40,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 18:47:40,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:40,168 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 18:47:40,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [654556804] [2020-08-21 18:47:40,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:47:40,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 18:47:40,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156142536] [2020-08-21 18:47:40,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 18:47:40,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:47:40,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 18:47:40,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-21 18:47:40,172 INFO L87 Difference]: Start difference. First operand 531 states and 640 transitions. Second operand 12 states. [2020-08-21 18:47:40,721 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:47:41,387 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:47:42,163 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:47:42,503 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:47:42,810 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:47:43,063 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:47:43,343 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:47:43,618 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:47:44,107 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 191 [2020-08-21 18:47:44,355 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:47:44,645 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:47:44,925 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 18:47:46,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:47:46,807 INFO L93 Difference]: Finished difference Result 1563 states and 1960 transitions. [2020-08-21 18:47:46,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-21 18:47:46,808 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 95 [2020-08-21 18:47:46,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:47:46,815 INFO L225 Difference]: With dead ends: 1563 [2020-08-21 18:47:46,815 INFO L226 Difference]: Without dead ends: 1056 [2020-08-21 18:47:46,818 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=195, Invalid=797, Unknown=0, NotChecked=0, Total=992 [2020-08-21 18:47:46,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2020-08-21 18:47:46,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 998. [2020-08-21 18:47:46,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 998 states. [2020-08-21 18:47:46,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1189 transitions. [2020-08-21 18:47:46,992 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1189 transitions. Word has length 95 [2020-08-21 18:47:46,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:47:46,993 INFO L479 AbstractCegarLoop]: Abstraction has 998 states and 1189 transitions. [2020-08-21 18:47:46,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 18:47:46,994 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1189 transitions. [2020-08-21 18:47:46,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-21 18:47:46,996 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:47:46,996 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] [2020-08-21 18:47:46,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 18:47:46,997 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:47:46,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:47:46,997 INFO L82 PathProgramCache]: Analyzing trace with hash 175480453, now seen corresponding path program 1 times [2020-08-21 18:47:46,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:47:46,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911778914] [2020-08-21 18:47:46,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:47:47,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:47,347 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:47:47,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:47:47,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:47,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:47:47,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:47,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:47:47,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:47,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:47:47,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:47,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:47:47,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:47,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 18:47:47,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:47,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 18:47:47,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:47,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 18:47:47,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:47,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:47:47,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:47,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:47:47,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:47,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:47:47,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:47,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:47:47,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:47,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:47:47,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:47,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 18:47:47,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:47,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-21 18:47:47,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:47,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-21 18:47:47,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:47,561 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 18:47:47,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [911778914] [2020-08-21 18:47:47,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:47:47,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-21 18:47:47,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193541316] [2020-08-21 18:47:47,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 18:47:47,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:47:47,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 18:47:47,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-08-21 18:47:47,570 INFO L87 Difference]: Start difference. First operand 998 states and 1189 transitions. Second operand 14 states. [2020-08-21 18:47:48,568 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:47:48,889 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:47:49,110 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:47:49,648 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:47:50,320 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:47:50,694 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:47:51,326 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:47:51,611 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:47:51,887 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:47:53,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:47:53,460 INFO L93 Difference]: Finished difference Result 2050 states and 2569 transitions. [2020-08-21 18:47:53,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-21 18:47:53,461 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 99 [2020-08-21 18:47:53,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:47:53,468 INFO L225 Difference]: With dead ends: 2050 [2020-08-21 18:47:53,469 INFO L226 Difference]: Without dead ends: 1076 [2020-08-21 18:47:53,473 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=201, Invalid=729, Unknown=0, NotChecked=0, Total=930 [2020-08-21 18:47:53,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1076 states. [2020-08-21 18:47:53,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1076 to 914. [2020-08-21 18:47:53,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 914 states. [2020-08-21 18:47:53,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1085 transitions. [2020-08-21 18:47:53,630 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1085 transitions. Word has length 99 [2020-08-21 18:47:53,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:47:53,630 INFO L479 AbstractCegarLoop]: Abstraction has 914 states and 1085 transitions. [2020-08-21 18:47:53,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-21 18:47:53,630 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1085 transitions. [2020-08-21 18:47:53,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-21 18:47:53,632 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:47:53,633 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] [2020-08-21 18:47:53,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 18:47:53,633 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:47:53,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:47:53,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1676429373, now seen corresponding path program 1 times [2020-08-21 18:47:53,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:47:53,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501384030] [2020-08-21 18:47:53,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:47:53,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:53,983 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:47:53,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:47:53,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:54,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:47:54,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:54,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:47:54,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:54,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:47:54,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:54,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:47:54,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:54,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 18:47:54,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:54,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 18:47:54,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:54,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:47:54,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:54,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:47:54,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:54,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:47:54,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:54,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:47:54,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:54,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:47:54,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:54,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:47:54,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:54,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 18:47:54,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:54,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-21 18:47:54,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:54,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-21 18:47:54,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:54,152 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 18:47:54,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1501384030] [2020-08-21 18:47:54,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:47:54,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-21 18:47:54,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982102566] [2020-08-21 18:47:54,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 18:47:54,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:47:54,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 18:47:54,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-08-21 18:47:54,155 INFO L87 Difference]: Start difference. First operand 914 states and 1085 transitions. Second operand 13 states. [2020-08-21 18:47:54,879 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:47:55,153 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:47:55,394 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:47:56,413 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:47:56,941 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:47:57,275 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:47:57,576 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:47:58,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:47:58,235 INFO L93 Difference]: Finished difference Result 1575 states and 1874 transitions. [2020-08-21 18:47:58,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 18:47:58,236 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 99 [2020-08-21 18:47:58,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:47:58,237 INFO L225 Difference]: With dead ends: 1575 [2020-08-21 18:47:58,238 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 18:47:58,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2020-08-21 18:47:58,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 18:47:58,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 18:47:58,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 18:47:58,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 18:47:58,244 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 99 [2020-08-21 18:47:58,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:47:58,244 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 18:47:58,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 18:47:58,244 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 18:47:58,245 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 18:47:58,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 18:47:58,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 18:47:59,264 WARN L193 SmtUtils]: Spent 698.00 ms on a formula simplification. DAG size of input: 291 DAG size of output: 248 [2020-08-21 18:48:00,730 WARN L193 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 244 [2020-08-21 18:48:01,143 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 291 DAG size of output: 248 [2020-08-21 18:48:02,794 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 244 [2020-08-21 18:48:03,879 WARN L193 SmtUtils]: Spent 878.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 26 [2020-08-21 18:48:05,044 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 162 DAG size of output: 30 [2020-08-21 18:48:05,849 WARN L193 SmtUtils]: Spent 802.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 39 [2020-08-21 18:48:06,009 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 1 [2020-08-21 18:48:06,183 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 22 [2020-08-21 18:48:06,343 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 1 [2020-08-21 18:48:06,970 WARN L193 SmtUtils]: Spent 612.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 33 [2020-08-21 18:48:08,166 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 170 DAG size of output: 38 [2020-08-21 18:48:08,760 WARN L193 SmtUtils]: Spent 590.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 30 [2020-08-21 18:48:08,953 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 1 [2020-08-21 18:48:09,122 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 22 [2020-08-21 18:48:09,738 WARN L193 SmtUtils]: Spent 612.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 30 [2020-08-21 18:48:10,533 WARN L193 SmtUtils]: Spent 792.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 38 [2020-08-21 18:48:10,712 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 22 [2020-08-21 18:48:10,920 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:48:11,090 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 1 [2020-08-21 18:48:11,900 WARN L193 SmtUtils]: Spent 807.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 39