/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product39.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 12:03:02,766 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 12:03:02,769 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 12:03:02,815 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 12:03:02,816 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 12:03:02,819 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 12:03:02,827 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 12:03:02,832 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 12:03:02,834 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 12:03:02,835 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 12:03:02,837 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 12:03:02,838 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 12:03:02,839 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 12:03:02,841 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 12:03:02,843 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 12:03:02,844 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 12:03:02,845 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 12:03:02,846 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 12:03:02,848 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 12:03:02,849 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 12:03:02,851 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 12:03:02,852 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 12:03:02,853 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 12:03:02,854 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 12:03:02,856 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 12:03:02,856 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 12:03:02,856 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 12:03:02,857 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 12:03:02,858 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 12:03:02,858 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 12:03:02,859 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 12:03:02,859 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 12:03:02,860 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 12:03:02,861 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 12:03:02,862 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 12:03:02,862 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 12:03:02,863 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 12:03:02,863 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 12:03:02,863 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 12:03:02,864 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 12:03:02,865 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 12:03:02,865 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 [2020-08-18 12:03:02,888 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 12:03:02,889 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 12:03:02,890 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 12:03:02,890 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 12:03:02,890 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 12:03:02,891 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 12:03:02,891 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 12:03:02,891 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 12:03:02,891 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 12:03:02,891 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 12:03:02,892 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 12:03:02,892 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 12:03:02,892 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 12:03:02,892 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 12:03:02,892 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 12:03:02,893 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 12:03:02,893 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 12:03:02,893 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 12:03:02,893 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 12:03:02,893 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 12:03:02,894 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 12:03:02,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 12:03:02,894 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 12:03:02,894 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 12:03:02,894 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 12:03:02,895 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 12:03:02,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 12:03:02,895 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 12:03:02,895 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 12:03:02,895 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 12:03:03,227 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 12:03:03,248 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 12:03:03,254 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 12:03:03,256 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 12:03:03,256 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 12:03:03,257 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product39.cil.c [2020-08-18 12:03:03,323 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/443e0cdbe/20ecfb04fcbb4112ae8e991a59aaa4af/FLAGcee8f7738 [2020-08-18 12:03:03,890 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 12:03:03,891 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product39.cil.c [2020-08-18 12:03:03,905 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/443e0cdbe/20ecfb04fcbb4112ae8e991a59aaa4af/FLAGcee8f7738 [2020-08-18 12:03:04,102 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/443e0cdbe/20ecfb04fcbb4112ae8e991a59aaa4af [2020-08-18 12:03:04,111 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 12:03:04,113 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 12:03:04,114 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 12:03:04,114 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 12:03:04,118 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 12:03:04,119 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 12:03:04" (1/1) ... [2020-08-18 12:03:04,122 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34e45435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:03:04, skipping insertion in model container [2020-08-18 12:03:04,122 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 12:03:04" (1/1) ... [2020-08-18 12:03:04,130 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 12:03:04,189 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 12:03:04,636 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 12:03:04,649 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 12:03:04,733 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 12:03:04,770 INFO L208 MainTranslator]: Completed translation [2020-08-18 12:03:04,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:03:04 WrapperNode [2020-08-18 12:03:04,771 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 12:03:04,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 12:03:04,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 12:03:04,772 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 12:03:04,786 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:03:04" (1/1) ... [2020-08-18 12:03:04,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:03:04" (1/1) ... [2020-08-18 12:03:04,807 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:03:04" (1/1) ... [2020-08-18 12:03:04,807 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:03:04" (1/1) ... [2020-08-18 12:03:04,841 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:03:04" (1/1) ... [2020-08-18 12:03:04,853 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:03:04" (1/1) ... [2020-08-18 12:03:04,858 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:03:04" (1/1) ... [2020-08-18 12:03:04,866 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 12:03:04,867 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 12:03:04,867 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 12:03:04,867 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 12:03:04,868 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:03:04" (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 [2020-08-18 12:03:04,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 12:03:04,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 12:03:04,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 12:03:04,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 12:03:04,941 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 12:03:04,941 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 12:03:04,942 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 12:03:04,942 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 12:03:04,942 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 12:03:04,942 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 12:03:04,942 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 12:03:04,942 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 12:03:04,943 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 12:03:04,943 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 12:03:04,943 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 12:03:04,943 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 12:03:04,943 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 12:03:04,944 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 12:03:04,944 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 12:03:04,944 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 12:03:04,944 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 12:03:04,944 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 12:03:04,944 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 12:03:04,945 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 12:03:04,945 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 12:03:04,945 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-18 12:03:04,945 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-18 12:03:04,945 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-18 12:03:04,945 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 12:03:04,946 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 12:03:04,946 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 12:03:04,946 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 12:03:04,946 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 12:03:04,946 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 12:03:04,947 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 12:03:04,947 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 12:03:04,947 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 12:03:04,947 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 12:03:04,947 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 12:03:04,947 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 12:03:04,947 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 12:03:04,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 12:03:04,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 12:03:04,948 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 12:03:04,948 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 12:03:04,948 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 12:03:04,948 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 12:03:04,949 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 12:03:04,949 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 12:03:04,949 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 12:03:04,949 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 12:03:04,949 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 12:03:04,949 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 12:03:04,950 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 12:03:04,950 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 12:03:04,950 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 12:03:04,950 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 12:03:04,950 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 12:03:04,950 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 12:03:04,950 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-18 12:03:04,951 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-18 12:03:04,951 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 12:03:04,951 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 12:03:04,951 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 12:03:04,951 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 12:03:04,952 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 12:03:04,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 12:03:04,952 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 12:03:04,952 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 12:03:04,952 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 12:03:04,952 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 12:03:04,952 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 12:03:04,953 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-18 12:03:04,953 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 12:03:04,953 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 12:03:04,953 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 12:03:04,953 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 12:03:04,953 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 12:03:04,954 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 12:03:04,954 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 12:03:04,954 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 12:03:04,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 12:03:04,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 12:03:04,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 12:03:04,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 12:03:04,955 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 12:03:04,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 12:03:04,955 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 12:03:04,955 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 12:03:04,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 12:03:04,955 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 12:03:04,956 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 12:03:04,956 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 12:03:04,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 12:03:04,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 12:03:04,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 12:03:06,282 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 12:03:06,282 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 12:03:06,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 12:03:06 BoogieIcfgContainer [2020-08-18 12:03:06,291 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 12:03:06,294 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 12:03:06,294 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 12:03:06,297 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 12:03:06,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 12:03:04" (1/3) ... [2020-08-18 12:03:06,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36ba72c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 12:03:06, skipping insertion in model container [2020-08-18 12:03:06,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:03:04" (2/3) ... [2020-08-18 12:03:06,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36ba72c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 12:03:06, skipping insertion in model container [2020-08-18 12:03:06,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 12:03:06" (3/3) ... [2020-08-18 12:03:06,302 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product39.cil.c [2020-08-18 12:03:06,313 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 12:03:06,321 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 12:03:06,334 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 12:03:06,358 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 12:03:06,358 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 12:03:06,358 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 12:03:06,358 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 12:03:06,359 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 12:03:06,359 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 12:03:06,359 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 12:03:06,360 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 12:03:06,383 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states. [2020-08-18 12:03:06,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 12:03:06,394 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:03:06,395 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:03:06,395 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:03:06,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:03:06,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1474572721, now seen corresponding path program 1 times [2020-08-18 12:03:06,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:03:06,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711791566] [2020-08-18 12:03:06,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:03:06,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:07,047 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:03:07,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:07,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:07,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:03:07,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:07,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:07,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:07,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:03:07,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:07,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:03:07,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:07,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:03:07,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:07,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 12:03:07,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:07,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:07,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:07,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 12:03:07,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:07,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 12:03:07,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:07,185 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 12:03:07,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711791566] [2020-08-18 12:03:07,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:03:07,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 12:03:07,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634014944] [2020-08-18 12:03:07,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 12:03:07,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:03:07,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 12:03:07,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 12:03:07,214 INFO L87 Difference]: Start difference. First operand 185 states. Second operand 4 states. [2020-08-18 12:03:08,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:03:08,353 INFO L93 Difference]: Finished difference Result 314 states and 404 transitions. [2020-08-18 12:03:08,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 12:03:08,356 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-18 12:03:08,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:03:08,371 INFO L225 Difference]: With dead ends: 314 [2020-08-18 12:03:08,371 INFO L226 Difference]: Without dead ends: 173 [2020-08-18 12:03:08,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 12:03:08,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-08-18 12:03:08,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 142. [2020-08-18 12:03:08,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-08-18 12:03:08,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 167 transitions. [2020-08-18 12:03:08,484 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 167 transitions. Word has length 59 [2020-08-18 12:03:08,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:03:08,485 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 167 transitions. [2020-08-18 12:03:08,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 12:03:08,485 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 167 transitions. [2020-08-18 12:03:08,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-18 12:03:08,495 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:03:08,496 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] [2020-08-18 12:03:08,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 12:03:08,497 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:03:08,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:03:08,497 INFO L82 PathProgramCache]: Analyzing trace with hash -902835711, now seen corresponding path program 1 times [2020-08-18 12:03:08,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:03:08,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [481298850] [2020-08-18 12:03:08,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:03:08,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:08,921 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:03:08,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:08,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:08,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:03:08,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:08,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:08,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:08,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:03:08,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:09,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:03:09,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:09,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:03:09,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:09,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 12:03:09,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:09,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:09,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:09,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 12:03:09,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:09,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 12:03:09,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:09,074 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 12:03:09,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [481298850] [2020-08-18 12:03:09,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:03:09,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 12:03:09,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094946926] [2020-08-18 12:03:09,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 12:03:09,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:03:09,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 12:03:09,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 12:03:09,080 INFO L87 Difference]: Start difference. First operand 142 states and 167 transitions. Second operand 9 states. [2020-08-18 12:03:09,501 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:03:09,823 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:10,058 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:10,314 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:11,276 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:13,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:03:13,148 INFO L93 Difference]: Finished difference Result 481 states and 605 transitions. [2020-08-18 12:03:13,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 12:03:13,149 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-18 12:03:13,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:03:13,155 INFO L225 Difference]: With dead ends: 481 [2020-08-18 12:03:13,156 INFO L226 Difference]: Without dead ends: 367 [2020-08-18 12:03:13,158 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-18 12:03:13,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-08-18 12:03:13,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 313. [2020-08-18 12:03:13,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2020-08-18 12:03:13,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 384 transitions. [2020-08-18 12:03:13,245 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 384 transitions. Word has length 64 [2020-08-18 12:03:13,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:03:13,245 INFO L479 AbstractCegarLoop]: Abstraction has 313 states and 384 transitions. [2020-08-18 12:03:13,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 12:03:13,246 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 384 transitions. [2020-08-18 12:03:13,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-18 12:03:13,249 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:03:13,250 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:03:13,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 12:03:13,250 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:03:13,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:03:13,251 INFO L82 PathProgramCache]: Analyzing trace with hash -2087202736, now seen corresponding path program 1 times [2020-08-18 12:03:13,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:03:13,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1467131016] [2020-08-18 12:03:13,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:03:13,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:13,645 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:03:13,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:13,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:13,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:03:13,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:13,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:13,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:13,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:03:13,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:13,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:03:13,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:13,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:03:13,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:13,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 12:03:13,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:13,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 12:03:13,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:13,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:13,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:13,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 12:03:13,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:13,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 12:03:13,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:13,798 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 12:03:13,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1467131016] [2020-08-18 12:03:13,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:03:13,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 12:03:13,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849015374] [2020-08-18 12:03:13,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 12:03:13,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:03:13,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 12:03:13,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 12:03:13,803 INFO L87 Difference]: Start difference. First operand 313 states and 384 transitions. Second operand 9 states. [2020-08-18 12:03:14,209 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:03:14,807 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:15,708 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:03:16,107 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:16,506 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:16,737 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:17,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:03:17,517 INFO L93 Difference]: Finished difference Result 829 states and 1126 transitions. [2020-08-18 12:03:17,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 12:03:17,518 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-18 12:03:17,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:03:17,524 INFO L225 Difference]: With dead ends: 829 [2020-08-18 12:03:17,524 INFO L226 Difference]: Without dead ends: 544 [2020-08-18 12:03:17,527 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 12:03:17,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2020-08-18 12:03:17,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 454. [2020-08-18 12:03:17,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 454 states. [2020-08-18 12:03:17,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 573 transitions. [2020-08-18 12:03:17,646 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 573 transitions. Word has length 70 [2020-08-18 12:03:17,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:03:17,647 INFO L479 AbstractCegarLoop]: Abstraction has 454 states and 573 transitions. [2020-08-18 12:03:17,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 12:03:17,647 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 573 transitions. [2020-08-18 12:03:17,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 12:03:17,651 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:03:17,651 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] [2020-08-18 12:03:17,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 12:03:17,652 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:03:17,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:03:17,652 INFO L82 PathProgramCache]: Analyzing trace with hash 571882893, now seen corresponding path program 1 times [2020-08-18 12:03:17,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:03:17,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1972480153] [2020-08-18 12:03:17,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:03:17,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:17,943 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:03:17,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:17,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:17,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:03:17,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:17,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:17,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:17,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:03:17,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:17,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:03:17,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:17,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:03:17,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:17,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 12:03:18,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:18,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:18,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:18,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 12:03:18,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:18,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:18,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:18,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:18,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:18,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:18,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:18,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:03:18,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:18,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 12:03:18,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:18,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 12:03:18,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:18,055 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 12:03:18,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1972480153] [2020-08-18 12:03:18,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:03:18,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 12:03:18,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469135192] [2020-08-18 12:03:18,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 12:03:18,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:03:18,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 12:03:18,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 12:03:18,059 INFO L87 Difference]: Start difference. First operand 454 states and 573 transitions. Second operand 6 states. [2020-08-18 12:03:18,519 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:19,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:03:19,621 INFO L93 Difference]: Finished difference Result 810 states and 1016 transitions. [2020-08-18 12:03:19,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 12:03:19,622 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2020-08-18 12:03:19,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:03:19,627 INFO L225 Difference]: With dead ends: 810 [2020-08-18 12:03:19,627 INFO L226 Difference]: Without dead ends: 485 [2020-08-18 12:03:19,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-08-18 12:03:19,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2020-08-18 12:03:19,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 412. [2020-08-18 12:03:19,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-08-18 12:03:19,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 497 transitions. [2020-08-18 12:03:19,703 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 497 transitions. Word has length 88 [2020-08-18 12:03:19,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:03:19,704 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 497 transitions. [2020-08-18 12:03:19,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 12:03:19,704 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 497 transitions. [2020-08-18 12:03:19,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-18 12:03:19,706 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:03:19,706 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] [2020-08-18 12:03:19,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 12:03:19,706 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:03:19,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:03:19,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1962075473, now seen corresponding path program 1 times [2020-08-18 12:03:19,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:03:19,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1349999207] [2020-08-18 12:03:19,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:03:19,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:20,018 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:03:20,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:20,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:20,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:03:20,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:20,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:20,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:20,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:03:20,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:20,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:03:20,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:20,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:03:20,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:20,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 12:03:20,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:20,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:20,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:20,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 12:03:20,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:20,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:20,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:20,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:20,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:20,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:20,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:20,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:03:20,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:20,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-18 12:03:20,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:20,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 12:03:20,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:20,235 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 12:03:20,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1349999207] [2020-08-18 12:03:20,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:03:20,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 12:03:20,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997249939] [2020-08-18 12:03:20,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 12:03:20,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:03:20,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 12:03:20,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 12:03:20,238 INFO L87 Difference]: Start difference. First operand 412 states and 497 transitions. Second operand 9 states. [2020-08-18 12:03:20,617 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:03:21,576 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:21,839 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:03:22,111 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:22,367 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:23,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:03:23,364 INFO L93 Difference]: Finished difference Result 1234 states and 1655 transitions. [2020-08-18 12:03:23,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 12:03:23,365 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-08-18 12:03:23,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:03:23,373 INFO L225 Difference]: With dead ends: 1234 [2020-08-18 12:03:23,374 INFO L226 Difference]: Without dead ends: 850 [2020-08-18 12:03:23,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-18 12:03:23,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2020-08-18 12:03:23,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 727. [2020-08-18 12:03:23,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2020-08-18 12:03:23,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 881 transitions. [2020-08-18 12:03:23,556 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 881 transitions. Word has length 92 [2020-08-18 12:03:23,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:03:23,556 INFO L479 AbstractCegarLoop]: Abstraction has 727 states and 881 transitions. [2020-08-18 12:03:23,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 12:03:23,557 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 881 transitions. [2020-08-18 12:03:23,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-18 12:03:23,559 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:03:23,559 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] [2020-08-18 12:03:23,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 12:03:23,560 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:03:23,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:03:23,560 INFO L82 PathProgramCache]: Analyzing trace with hash 236594576, now seen corresponding path program 1 times [2020-08-18 12:03:23,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:03:23,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003089956] [2020-08-18 12:03:23,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:03:23,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:23,814 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:03:23,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:23,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:23,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:03:23,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:23,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:23,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:23,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:03:23,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:23,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:03:23,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:23,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:03:23,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:23,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 12:03:23,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:23,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:23,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:23,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 12:03:23,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:23,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:23,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:23,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:23,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:23,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:23,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:23,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:03:23,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:23,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-18 12:03:23,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:23,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 12:03:23,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:23,945 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 12:03:23,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003089956] [2020-08-18 12:03:23,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:03:23,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 12:03:23,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992423505] [2020-08-18 12:03:23,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 12:03:23,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:03:23,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 12:03:23,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 12:03:23,948 INFO L87 Difference]: Start difference. First operand 727 states and 881 transitions. Second operand 9 states. [2020-08-18 12:03:25,031 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:25,333 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 12:03:25,595 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:25,848 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:26,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:03:26,570 INFO L93 Difference]: Finished difference Result 1548 states and 1977 transitions. [2020-08-18 12:03:26,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 12:03:26,571 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-08-18 12:03:26,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:03:26,578 INFO L225 Difference]: With dead ends: 1548 [2020-08-18 12:03:26,578 INFO L226 Difference]: Without dead ends: 849 [2020-08-18 12:03:26,581 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 12:03:26,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2020-08-18 12:03:26,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 747. [2020-08-18 12:03:26,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 747 states. [2020-08-18 12:03:26,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 901 transitions. [2020-08-18 12:03:26,716 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 901 transitions. Word has length 92 [2020-08-18 12:03:26,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:03:26,717 INFO L479 AbstractCegarLoop]: Abstraction has 747 states and 901 transitions. [2020-08-18 12:03:26,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 12:03:26,717 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 901 transitions. [2020-08-18 12:03:26,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-18 12:03:26,720 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:03:26,720 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] [2020-08-18 12:03:26,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 12:03:26,721 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:03:26,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:03:26,721 INFO L82 PathProgramCache]: Analyzing trace with hash 938194450, now seen corresponding path program 1 times [2020-08-18 12:03:26,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:03:26,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794696068] [2020-08-18 12:03:26,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:03:26,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:27,161 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:03:27,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:27,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:27,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:03:27,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:27,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:27,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:27,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:03:27,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:27,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:03:27,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:27,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:03:27,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:27,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 12:03:27,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:27,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:27,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:27,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 12:03:27,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:27,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:27,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:27,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:27,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:27,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:27,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:27,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:03:27,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:27,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-18 12:03:27,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:27,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 12:03:27,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:27,309 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 12:03:27,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [794696068] [2020-08-18 12:03:27,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:03:27,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 12:03:27,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704530783] [2020-08-18 12:03:27,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 12:03:27,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:03:27,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 12:03:27,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 12:03:27,312 INFO L87 Difference]: Start difference. First operand 747 states and 901 transitions. Second operand 11 states. [2020-08-18 12:03:27,821 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:28,057 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:28,289 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:29,058 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:29,310 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:29,540 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:30,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:03:30,439 INFO L93 Difference]: Finished difference Result 1410 states and 1790 transitions. [2020-08-18 12:03:30,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 12:03:30,440 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 92 [2020-08-18 12:03:30,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:03:30,448 INFO L225 Difference]: With dead ends: 1410 [2020-08-18 12:03:30,448 INFO L226 Difference]: Without dead ends: 691 [2020-08-18 12:03:30,451 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 12:03:30,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2020-08-18 12:03:30,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 618. [2020-08-18 12:03:30,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 618 states. [2020-08-18 12:03:30,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 727 transitions. [2020-08-18 12:03:30,555 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 727 transitions. Word has length 92 [2020-08-18 12:03:30,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:03:30,555 INFO L479 AbstractCegarLoop]: Abstraction has 618 states and 727 transitions. [2020-08-18 12:03:30,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 12:03:30,556 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 727 transitions. [2020-08-18 12:03:30,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-08-18 12:03:30,559 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:03:30,559 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] [2020-08-18 12:03:30,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 12:03:30,560 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:03:30,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:03:30,560 INFO L82 PathProgramCache]: Analyzing trace with hash -711915603, now seen corresponding path program 1 times [2020-08-18 12:03:30,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:03:30,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [710779545] [2020-08-18 12:03:30,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:03:30,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:31,058 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:03:31,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:31,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:31,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:03:31,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:31,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:31,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:31,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:03:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:31,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:03:31,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:31,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:03:31,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:31,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 12:03:31,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:31,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 12:03:31,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:31,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:31,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:31,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 12:03:31,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:31,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:31,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:31,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:31,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:31,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:31,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:03:31,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:31,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 12:03:31,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:31,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 12:03:31,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:31,299 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 12:03:31,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [710779545] [2020-08-18 12:03:31,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:03:31,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 12:03:31,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880685651] [2020-08-18 12:03:31,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 12:03:31,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:03:31,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 12:03:31,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-18 12:03:31,306 INFO L87 Difference]: Start difference. First operand 618 states and 727 transitions. Second operand 12 states. [2020-08-18 12:03:31,937 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:03:32,724 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:03:33,433 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:33,792 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:34,035 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:03:34,317 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:34,583 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:36,402 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:03:36,696 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:37,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:03:37,121 INFO L93 Difference]: Finished difference Result 1813 states and 2317 transitions. [2020-08-18 12:03:37,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-18 12:03:37,123 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 96 [2020-08-18 12:03:37,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:03:37,132 INFO L225 Difference]: With dead ends: 1813 [2020-08-18 12:03:37,132 INFO L226 Difference]: Without dead ends: 1405 [2020-08-18 12:03:37,135 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-18 12:03:37,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1405 states. [2020-08-18 12:03:37,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1405 to 1271. [2020-08-18 12:03:37,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1271 states. [2020-08-18 12:03:37,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 1497 transitions. [2020-08-18 12:03:37,347 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 1497 transitions. Word has length 96 [2020-08-18 12:03:37,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:03:37,349 INFO L479 AbstractCegarLoop]: Abstraction has 1271 states and 1497 transitions. [2020-08-18 12:03:37,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 12:03:37,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 1497 transitions. [2020-08-18 12:03:37,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-08-18 12:03:37,353 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:03:37,353 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:03:37,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 12:03:37,354 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:03:37,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:03:37,354 INFO L82 PathProgramCache]: Analyzing trace with hash 69794205, now seen corresponding path program 1 times [2020-08-18 12:03:37,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:03:37,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [352802661] [2020-08-18 12:03:37,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:03:37,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:37,687 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:03:37,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:37,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:37,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:03:37,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:37,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:37,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:37,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:03:37,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:37,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:03:37,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:37,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:03:37,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:37,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 12:03:37,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:37,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 12:03:37,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:37,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:37,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:37,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:37,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:37,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:03:37,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:37,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:37,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:37,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:37,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:37,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:37,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:37,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:03:37,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:37,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 12:03:37,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:37,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:37,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:37,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 12:03:37,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:37,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:37,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:37,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 12:03:37,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:37,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-18 12:03:37,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:37,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:37,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:37,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:37,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:37,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 12:03:37,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:37,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:37,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:37,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-18 12:03:37,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:37,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-18 12:03:37,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:38,006 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 12:03:38,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [352802661] [2020-08-18 12:03:38,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 12:03:38,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 12:03:38,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957003850] [2020-08-18 12:03:38,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 12:03:38,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:03:38,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 12:03:38,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-18 12:03:38,009 INFO L87 Difference]: Start difference. First operand 1271 states and 1497 transitions. Second operand 16 states. [2020-08-18 12:03:38,541 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:03:38,877 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 12:03:39,150 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 12:03:39,416 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 12:03:40,023 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:03:40,339 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:03:40,707 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 12:03:40,982 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 12:03:42,047 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:03:42,689 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:43,007 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:43,340 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:03:43,879 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:44,260 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:03:44,618 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 12:03:45,311 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:03:45,587 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 12:03:46,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:03:46,318 INFO L93 Difference]: Finished difference Result 2793 states and 3416 transitions. [2020-08-18 12:03:46,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-08-18 12:03:46,323 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 155 [2020-08-18 12:03:46,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:03:46,334 INFO L225 Difference]: With dead ends: 2793 [2020-08-18 12:03:46,334 INFO L226 Difference]: Without dead ends: 1726 [2020-08-18 12:03:46,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=605, Invalid=2257, Unknown=0, NotChecked=0, Total=2862 [2020-08-18 12:03:46,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2020-08-18 12:03:46,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1529. [2020-08-18 12:03:46,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1529 states. [2020-08-18 12:03:46,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1529 states to 1529 states and 1785 transitions. [2020-08-18 12:03:46,587 INFO L78 Accepts]: Start accepts. Automaton has 1529 states and 1785 transitions. Word has length 155 [2020-08-18 12:03:46,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:03:46,588 INFO L479 AbstractCegarLoop]: Abstraction has 1529 states and 1785 transitions. [2020-08-18 12:03:46,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 12:03:46,588 INFO L276 IsEmpty]: Start isEmpty. Operand 1529 states and 1785 transitions. [2020-08-18 12:03:46,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-08-18 12:03:46,595 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:03:46,596 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:03:46,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 12:03:46,596 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:03:46,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:03:46,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1402201584, now seen corresponding path program 1 times [2020-08-18 12:03:46,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:03:46,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1817984512] [2020-08-18 12:03:46,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:03:46,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:46,932 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:03:46,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:46,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:46,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:03:46,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:46,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:46,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:46,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:03:46,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:46,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:03:46,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:46,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:03:46,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:46,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 12:03:46,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:46,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 12:03:46,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:46,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:46,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:46,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:46,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:03:47,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:47,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:47,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:47,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:03:47,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 12:03:47,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:47,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 12:03:47,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:47,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:47,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:47,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 12:03:47,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:47,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:47,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 12:03:47,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:47,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 12:03:47,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:47,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-08-18 12:03:47,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:47,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:47,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:47,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 12:03:47,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:47,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:47,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 12:03:47,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 12:03:47,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:47,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-08-18 12:03:47,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:47,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-08-18 12:03:47,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:47,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:47,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:47,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:03:47,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-08-18 12:03:47,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-18 12:03:47,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:47,332 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 76 proven. 31 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-08-18 12:03:47,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1817984512] [2020-08-18 12:03:47,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 12:03:47,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 12:03:47,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125279581] [2020-08-18 12:03:47,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 12:03:47,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:03:47,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 12:03:47,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-18 12:03:47,334 INFO L87 Difference]: Start difference. First operand 1529 states and 1785 transitions. Second operand 15 states. [2020-08-18 12:03:48,394 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:03:48,621 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:48,867 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:03:49,118 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:03:49,350 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:03:50,188 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:03:50,708 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-18 12:03:51,147 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-18 12:03:51,498 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:53,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:03:53,667 INFO L93 Difference]: Finished difference Result 4301 states and 5229 transitions. [2020-08-18 12:03:53,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-18 12:03:53,668 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 269 [2020-08-18 12:03:53,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:03:53,683 INFO L225 Difference]: With dead ends: 4301 [2020-08-18 12:03:53,683 INFO L226 Difference]: Without dead ends: 2605 [2020-08-18 12:03:53,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=317, Invalid=1243, Unknown=0, NotChecked=0, Total=1560 [2020-08-18 12:03:53,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2605 states. [2020-08-18 12:03:54,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2605 to 2205. [2020-08-18 12:03:54,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2205 states. [2020-08-18 12:03:54,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2205 states to 2205 states and 2585 transitions. [2020-08-18 12:03:54,112 INFO L78 Accepts]: Start accepts. Automaton has 2205 states and 2585 transitions. Word has length 269 [2020-08-18 12:03:54,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:03:54,112 INFO L479 AbstractCegarLoop]: Abstraction has 2205 states and 2585 transitions. [2020-08-18 12:03:54,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 12:03:54,113 INFO L276 IsEmpty]: Start isEmpty. Operand 2205 states and 2585 transitions. [2020-08-18 12:03:54,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-08-18 12:03:54,123 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:03:54,124 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:03:54,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 12:03:54,124 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:03:54,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:03:54,125 INFO L82 PathProgramCache]: Analyzing trace with hash -692797707, now seen corresponding path program 1 times [2020-08-18 12:03:54,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:03:54,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1894174465] [2020-08-18 12:03:54,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:03:54,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,432 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:03:54,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:54,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:03:54,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:54,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:03:54,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:03:54,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:03:54,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 12:03:54,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 12:03:54,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:54,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:54,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:03:54,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:54,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:54,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:54,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:03:54,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 12:03:54,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:54,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 12:03:54,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:54,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:54,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:54,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 12:03:54,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:54,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:54,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 12:03:54,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:54,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 12:03:54,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:54,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 12:03:54,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-08-18 12:03:54,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:54,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:54,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:54,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 12:03:54,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:54,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:54,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 12:03:54,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 12:03:54,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:54,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-08-18 12:03:54,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:54,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-08-18 12:03:54,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:54,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:54,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:54,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:03:54,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-18 12:03:54,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-08-18 12:03:54,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,835 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 85 proven. 36 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-08-18 12:03:54,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1894174465] [2020-08-18 12:03:54,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 12:03:54,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 12:03:54,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924268629] [2020-08-18 12:03:54,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 12:03:54,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:03:54,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 12:03:54,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-18 12:03:54,838 INFO L87 Difference]: Start difference. First operand 2205 states and 2585 transitions. Second operand 16 states. [2020-08-18 12:03:55,327 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:03:55,641 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 12:03:55,893 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:03:56,126 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:03:56,811 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:57,863 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:03:58,183 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:58,443 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:59,028 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:59,908 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:04:00,165 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191