/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product40.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 02:40:38,047 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 02:40:38,050 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 02:40:38,073 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 02:40:38,074 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 02:40:38,075 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 02:40:38,076 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 02:40:38,077 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 02:40:38,079 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 02:40:38,080 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 02:40:38,081 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 02:40:38,082 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 02:40:38,082 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 02:40:38,083 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 02:40:38,084 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 02:40:38,085 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 02:40:38,086 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 02:40:38,087 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 02:40:38,089 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 02:40:38,091 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 02:40:38,092 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 02:40:38,093 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 02:40:38,094 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 02:40:38,095 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 02:40:38,098 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 02:40:38,098 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 02:40:38,098 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 02:40:38,099 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 02:40:38,099 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 02:40:38,103 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 02:40:38,104 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 02:40:38,104 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 02:40:38,107 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 02:40:38,108 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 02:40:38,109 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 02:40:38,109 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 02:40:38,110 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 02:40:38,111 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 02:40:38,112 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 02:40:38,113 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 02:40:38,113 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 02:40:38,115 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 02:40:38,163 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 02:40:38,163 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 02:40:38,164 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 02:40:38,164 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 02:40:38,165 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 02:40:38,165 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 02:40:38,165 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 02:40:38,165 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 02:40:38,165 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 02:40:38,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 02:40:38,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 02:40:38,166 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 02:40:38,167 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 02:40:38,167 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 02:40:38,167 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 02:40:38,167 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 02:40:38,167 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 02:40:38,168 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 02:40:38,168 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 02:40:38,168 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 02:40:38,168 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 02:40:38,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:40:38,169 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 02:40:38,170 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 02:40:38,170 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 02:40:38,170 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 02:40:38,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 02:40:38,171 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 02:40:38,171 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 02:40:38,171 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=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; [2020-08-19 02:40:38,476 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 02:40:38,488 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 02:40:38,492 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 02:40:38,493 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 02:40:38,494 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 02:40:38,495 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product40.cil.c [2020-08-19 02:40:38,555 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e68aaced2/514591d5ca21405389cf8a6244a762b6/FLAG7d8aa569d [2020-08-19 02:40:39,003 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 02:40:39,003 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product40.cil.c [2020-08-19 02:40:39,027 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e68aaced2/514591d5ca21405389cf8a6244a762b6/FLAG7d8aa569d [2020-08-19 02:40:39,321 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e68aaced2/514591d5ca21405389cf8a6244a762b6 [2020-08-19 02:40:39,332 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 02:40:39,334 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 02:40:39,335 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 02:40:39,335 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 02:40:39,339 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 02:40:39,340 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:40:39" (1/1) ... [2020-08-19 02:40:39,343 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29e1689a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:40:39, skipping insertion in model container [2020-08-19 02:40:39,343 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:40:39" (1/1) ... [2020-08-19 02:40:39,351 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 02:40:39,420 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 02:40:39,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:40:39,760 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 02:40:39,937 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:40:39,986 INFO L208 MainTranslator]: Completed translation [2020-08-19 02:40:39,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:40:39 WrapperNode [2020-08-19 02:40:39,987 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 02:40:39,988 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 02:40:39,988 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 02:40:39,988 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 02:40:39,999 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:40:39" (1/1) ... [2020-08-19 02:40:39,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:40:39" (1/1) ... [2020-08-19 02:40:40,020 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:40:39" (1/1) ... [2020-08-19 02:40:40,020 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:40:39" (1/1) ... [2020-08-19 02:40:40,050 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:40:39" (1/1) ... [2020-08-19 02:40:40,060 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:40:39" (1/1) ... [2020-08-19 02:40:40,065 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:40:39" (1/1) ... [2020-08-19 02:40:40,076 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 02:40:40,077 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 02:40:40,077 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 02:40:40,077 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 02:40:40,078 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:40:39" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:40:40,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 02:40:40,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 02:40:40,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 02:40:40,144 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 02:40:40,144 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 02:40:40,144 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 02:40:40,145 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 02:40:40,145 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 02:40:40,145 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 02:40:40,145 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 02:40:40,145 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 02:40:40,146 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 02:40:40,146 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 02:40:40,146 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 02:40:40,146 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 02:40:40,146 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 02:40:40,146 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 02:40:40,146 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 02:40:40,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 02:40:40,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 02:40:40,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 02:40:40,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 02:40:40,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-19 02:40:40,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-19 02:40:40,148 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-19 02:40:40,148 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 02:40:40,148 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 02:40:40,148 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 02:40:40,148 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 02:40:40,148 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 02:40:40,148 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 02:40:40,149 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 02:40:40,149 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 02:40:40,149 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 02:40:40,149 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 02:40:40,149 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 02:40:40,150 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 02:40:40,150 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 02:40:40,150 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 02:40:40,150 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 02:40:40,150 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 02:40:40,150 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 02:40:40,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 02:40:40,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 02:40:40,151 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 02:40:40,151 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 02:40:40,151 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 02:40:40,151 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 02:40:40,151 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 02:40:40,152 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 02:40:40,152 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 02:40:40,152 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 02:40:40,152 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 02:40:40,152 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 02:40:40,155 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 02:40:40,155 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 02:40:40,155 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-19 02:40:40,155 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-19 02:40:40,155 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 02:40:40,155 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 02:40:40,156 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 02:40:40,156 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 02:40:40,156 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 02:40:40,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 02:40:40,156 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 02:40:40,156 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 02:40:40,156 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 02:40:40,156 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 02:40:40,156 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 02:40:40,157 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 02:40:40,157 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 02:40:40,157 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 02:40:40,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 02:40:40,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 02:40:40,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 02:40:40,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 02:40:40,158 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 02:40:40,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 02:40:40,158 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 02:40:40,158 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 02:40:40,158 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 02:40:40,158 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 02:40:40,158 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 02:40:40,160 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 02:40:40,160 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 02:40:40,160 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 02:40:40,160 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-19 02:40:40,161 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 02:40:40,161 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 02:40:40,161 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 02:40:40,161 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 02:40:40,161 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 02:40:40,161 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 02:40:40,161 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 02:40:40,161 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 02:40:40,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 02:40:40,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 02:40:40,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 02:40:41,236 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 02:40:41,236 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 02:40:41,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:40:41 BoogieIcfgContainer [2020-08-19 02:40:41,242 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 02:40:41,243 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 02:40:41,243 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 02:40:41,247 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 02:40:41,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 02:40:39" (1/3) ... [2020-08-19 02:40:41,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c929ec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:40:41, skipping insertion in model container [2020-08-19 02:40:41,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:40:39" (2/3) ... [2020-08-19 02:40:41,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c929ec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:40:41, skipping insertion in model container [2020-08-19 02:40:41,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:40:41" (3/3) ... [2020-08-19 02:40:41,251 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product40.cil.c [2020-08-19 02:40:41,262 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 02:40:41,270 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 02:40:41,285 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 02:40:41,311 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 02:40:41,311 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 02:40:41,311 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 02:40:41,311 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 02:40:41,312 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 02:40:41,312 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 02:40:41,312 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 02:40:41,312 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 02:40:41,335 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states. [2020-08-19 02:40:41,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-19 02:40:41,349 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:40:41,350 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:40:41,351 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:40:41,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:40:41,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1231866733, now seen corresponding path program 1 times [2020-08-19 02:40:41,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:40:41,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [296370395] [2020-08-19 02:40:41,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:40:41,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:42,048 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:40:42,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:40:42,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:42,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:40:42,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:42,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:40:42,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:42,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:40:42,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:42,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:40:42,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:42,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:40:42,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:42,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:40:42,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:42,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:40:42,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:42,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 02:40:42,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:42,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 02:40:42,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:42,235 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 02:40:42,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [296370395] [2020-08-19 02:40:42,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:40:42,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 02:40:42,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003758054] [2020-08-19 02:40:42,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 02:40:42,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:40:42,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 02:40:42,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 02:40:42,269 INFO L87 Difference]: Start difference. First operand 189 states. Second operand 4 states. [2020-08-19 02:40:43,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:40:43,494 INFO L93 Difference]: Finished difference Result 324 states and 416 transitions. [2020-08-19 02:40:43,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 02:40:43,497 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-19 02:40:43,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:40:43,513 INFO L225 Difference]: With dead ends: 324 [2020-08-19 02:40:43,513 INFO L226 Difference]: Without dead ends: 179 [2020-08-19 02:40:43,518 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 02:40:43,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-19 02:40:43,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 146. [2020-08-19 02:40:43,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-08-19 02:40:43,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 171 transitions. [2020-08-19 02:40:43,613 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 171 transitions. Word has length 59 [2020-08-19 02:40:43,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:40:43,613 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 171 transitions. [2020-08-19 02:40:43,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 02:40:43,614 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 171 transitions. [2020-08-19 02:40:43,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-19 02:40:43,617 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:40:43,618 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:40:43,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 02:40:43,618 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:40:43,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:40:43,619 INFO L82 PathProgramCache]: Analyzing trace with hash 735941424, now seen corresponding path program 1 times [2020-08-19 02:40:43,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:40:43,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1380660380] [2020-08-19 02:40:43,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:40:43,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:44,023 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:40:44,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:40:44,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:44,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:40:44,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:44,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:40:44,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:44,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:40:44,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:44,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:40:44,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:44,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:40:44,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:44,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 02:40:44,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:44,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:40:44,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:44,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 02:40:44,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:44,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 02:40:44,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:44,108 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 02:40:44,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1380660380] [2020-08-19 02:40:44,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:40:44,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 02:40:44,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133190972] [2020-08-19 02:40:44,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 02:40:44,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:40:44,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 02:40:44,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 02:40:44,113 INFO L87 Difference]: Start difference. First operand 146 states and 171 transitions. Second operand 5 states. [2020-08-19 02:40:44,601 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:40:45,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:40:45,618 INFO L93 Difference]: Finished difference Result 259 states and 316 transitions. [2020-08-19 02:40:45,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 02:40:45,619 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-19 02:40:45,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:40:45,623 INFO L225 Difference]: With dead ends: 259 [2020-08-19 02:40:45,623 INFO L226 Difference]: Without dead ends: 169 [2020-08-19 02:40:45,625 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-19 02:40:45,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-08-19 02:40:45,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 137. [2020-08-19 02:40:45,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-08-19 02:40:45,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 159 transitions. [2020-08-19 02:40:45,670 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 159 transitions. Word has length 60 [2020-08-19 02:40:45,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:40:45,670 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 159 transitions. [2020-08-19 02:40:45,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 02:40:45,670 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 159 transitions. [2020-08-19 02:40:45,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-19 02:40:45,672 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:40:45,673 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:40:45,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 02:40:45,673 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:40:45,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:40:45,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1019781836, now seen corresponding path program 1 times [2020-08-19 02:40:45,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:40:45,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [489432778] [2020-08-19 02:40:45,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:40:45,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:46,023 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:40:46,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:40:46,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:46,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:40:46,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:46,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:40:46,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:46,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:40:46,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:46,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:40:46,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:46,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:40:46,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:46,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 02:40:46,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:46,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:40:46,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:46,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 02:40:46,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:46,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 02:40:46,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:46,128 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 02:40:46,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [489432778] [2020-08-19 02:40:46,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:40:46,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 02:40:46,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410440076] [2020-08-19 02:40:46,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 02:40:46,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:40:46,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 02:40:46,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 02:40:46,132 INFO L87 Difference]: Start difference. First operand 137 states and 159 transitions. Second operand 9 states. [2020-08-19 02:40:46,493 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:40:46,811 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:40:47,083 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:40:47,323 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:40:48,266 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:40:50,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:40:50,107 INFO L93 Difference]: Finished difference Result 460 states and 568 transitions. [2020-08-19 02:40:50,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 02:40:50,108 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-19 02:40:50,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:40:50,119 INFO L225 Difference]: With dead ends: 460 [2020-08-19 02:40:50,120 INFO L226 Difference]: Without dead ends: 351 [2020-08-19 02:40:50,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-19 02:40:50,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2020-08-19 02:40:50,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 290. [2020-08-19 02:40:50,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-08-19 02:40:50,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 350 transitions. [2020-08-19 02:40:50,226 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 350 transitions. Word has length 65 [2020-08-19 02:40:50,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:40:50,226 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 350 transitions. [2020-08-19 02:40:50,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 02:40:50,227 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 350 transitions. [2020-08-19 02:40:50,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-19 02:40:50,229 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:40:50,229 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:40:50,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 02:40:50,230 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:40:50,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:40:50,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1071873071, now seen corresponding path program 1 times [2020-08-19 02:40:50,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:40:50,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417173555] [2020-08-19 02:40:50,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:40:50,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:50,552 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:40:50,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:40:50,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:50,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:40:50,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:50,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:40:50,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:50,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:40:50,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:50,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:40:50,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:50,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:40:50,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:50,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 02:40:50,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:50,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 02:40:50,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:50,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:40:50,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:50,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-19 02:40:50,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:50,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 02:40:50,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:50,670 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 02:40:50,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417173555] [2020-08-19 02:40:50,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:40:50,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 02:40:50,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083047365] [2020-08-19 02:40:50,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 02:40:50,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:40:50,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 02:40:50,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 02:40:50,673 INFO L87 Difference]: Start difference. First operand 290 states and 350 transitions. Second operand 9 states. [2020-08-19 02:40:51,069 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:40:51,753 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:40:52,590 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:40:52,907 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:40:53,167 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:40:53,420 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:40:54,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:40:54,192 INFO L93 Difference]: Finished difference Result 747 states and 974 transitions. [2020-08-19 02:40:54,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 02:40:54,193 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-19 02:40:54,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:40:54,201 INFO L225 Difference]: With dead ends: 747 [2020-08-19 02:40:54,202 INFO L226 Difference]: Without dead ends: 485 [2020-08-19 02:40:54,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-19 02:40:54,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2020-08-19 02:40:54,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 417. [2020-08-19 02:40:54,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-08-19 02:40:54,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 501 transitions. [2020-08-19 02:40:54,290 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 501 transitions. Word has length 70 [2020-08-19 02:40:54,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:40:54,291 INFO L479 AbstractCegarLoop]: Abstraction has 417 states and 501 transitions. [2020-08-19 02:40:54,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 02:40:54,291 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 501 transitions. [2020-08-19 02:40:54,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 02:40:54,294 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:40:54,295 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] [2020-08-19 02:40:54,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 02:40:54,295 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:40:54,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:40:54,296 INFO L82 PathProgramCache]: Analyzing trace with hash -573764694, now seen corresponding path program 1 times [2020-08-19 02:40:54,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:40:54,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1703366576] [2020-08-19 02:40:54,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:40:54,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:54,551 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:40:54,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:40:54,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:54,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:40:54,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:54,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:40:54,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:54,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:40:54,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:54,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:40:54,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:54,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:40:54,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:54,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 02:40:54,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:54,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:40:54,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:54,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 02:40:54,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:54,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:40:54,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:54,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:40:54,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:54,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:40:54,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:54,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:40:54,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:54,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-19 02:40:54,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:54,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-19 02:40:54,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:54,743 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 02:40:54,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1703366576] [2020-08-19 02:40:54,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:40:54,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 02:40:54,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748246124] [2020-08-19 02:40:54,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 02:40:54,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:40:54,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 02:40:54,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 02:40:54,747 INFO L87 Difference]: Start difference. First operand 417 states and 501 transitions. Second operand 9 states. [2020-08-19 02:40:55,133 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:40:56,217 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:40:56,465 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:40:56,715 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:40:56,982 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:40:58,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:40:58,228 INFO L93 Difference]: Finished difference Result 1260 states and 1685 transitions. [2020-08-19 02:40:58,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 02:40:58,230 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-19 02:40:58,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:40:58,236 INFO L225 Difference]: With dead ends: 1260 [2020-08-19 02:40:58,236 INFO L226 Difference]: Without dead ends: 871 [2020-08-19 02:40:58,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-19 02:40:58,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2020-08-19 02:40:58,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 743. [2020-08-19 02:40:58,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2020-08-19 02:40:58,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 897 transitions. [2020-08-19 02:40:58,366 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 897 transitions. Word has length 93 [2020-08-19 02:40:58,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:40:58,367 INFO L479 AbstractCegarLoop]: Abstraction has 743 states and 897 transitions. [2020-08-19 02:40:58,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 02:40:58,367 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 897 transitions. [2020-08-19 02:40:58,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 02:40:58,382 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:40:58,382 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] [2020-08-19 02:40:58,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 02:40:58,383 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:40:58,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:40:58,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1995721705, now seen corresponding path program 1 times [2020-08-19 02:40:58,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:40:58,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986276017] [2020-08-19 02:40:58,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:40:58,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:58,719 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:40:58,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:40:58,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:58,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:40:58,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:58,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:40:58,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:58,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:40:58,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:58,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:40:58,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:58,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:40:58,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:58,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 02:40:58,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:58,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:40:58,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:58,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 02:40:58,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:58,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:40:58,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:58,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:40:58,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:58,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:40:58,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:58,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:40:58,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:58,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-19 02:40:58,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:58,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-19 02:40:58,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:58,851 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 02:40:58,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1986276017] [2020-08-19 02:40:58,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:40:58,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 02:40:58,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670608158] [2020-08-19 02:40:58,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 02:40:58,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:40:58,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 02:40:58,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 02:40:58,854 INFO L87 Difference]: Start difference. First operand 743 states and 897 transitions. Second operand 9 states. [2020-08-19 02:40:59,908 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:41:00,149 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 02:41:00,406 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:41:00,666 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:41:01,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:41:01,477 INFO L93 Difference]: Finished difference Result 1585 states and 2019 transitions. [2020-08-19 02:41:01,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 02:41:01,480 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-19 02:41:01,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:41:01,487 INFO L225 Difference]: With dead ends: 1585 [2020-08-19 02:41:01,488 INFO L226 Difference]: Without dead ends: 870 [2020-08-19 02:41:01,490 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 [2020-08-19 02:41:01,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2020-08-19 02:41:01,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 763. [2020-08-19 02:41:01,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 763 states. [2020-08-19 02:41:01,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 917 transitions. [2020-08-19 02:41:01,702 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 917 transitions. Word has length 93 [2020-08-19 02:41:01,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:41:01,709 INFO L479 AbstractCegarLoop]: Abstraction has 763 states and 917 transitions. [2020-08-19 02:41:01,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 02:41:01,712 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 917 transitions. [2020-08-19 02:41:01,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 02:41:01,719 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:41:01,720 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, 1] [2020-08-19 02:41:01,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 02:41:01,722 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:41:01,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:41:01,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1597645717, now seen corresponding path program 1 times [2020-08-19 02:41:01,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:41:01,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103505074] [2020-08-19 02:41:01,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:41:01,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:02,125 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:41:02,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:02,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:02,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:41:02,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:02,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:41:02,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:02,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:41:02,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:02,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:41:02,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:02,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:41:02,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:02,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 02:41:02,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:02,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:02,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:02,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 02:41:02,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:02,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:41:02,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:02,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:41:02,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:02,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:02,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:02,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:41:02,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:02,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-19 02:41:02,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:02,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-19 02:41:02,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:02,318 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 02:41:02,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2103505074] [2020-08-19 02:41:02,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:41:02,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 02:41:02,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674503489] [2020-08-19 02:41:02,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 02:41:02,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:41:02,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 02:41:02,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-19 02:41:02,325 INFO L87 Difference]: Start difference. First operand 763 states and 917 transitions. Second operand 11 states. [2020-08-19 02:41:02,879 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:41:03,126 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:41:03,363 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:41:04,254 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:41:04,509 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:41:04,775 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:41:05,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:41:05,592 INFO L93 Difference]: Finished difference Result 1442 states and 1826 transitions. [2020-08-19 02:41:05,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 02:41:05,593 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-19 02:41:05,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:41:05,600 INFO L225 Difference]: With dead ends: 1442 [2020-08-19 02:41:05,600 INFO L226 Difference]: Without dead ends: 707 [2020-08-19 02:41:05,605 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 02:41:05,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-08-19 02:41:05,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 630. [2020-08-19 02:41:05,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 630 states. [2020-08-19 02:41:05,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 739 transitions. [2020-08-19 02:41:05,770 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 739 transitions. Word has length 93 [2020-08-19 02:41:05,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:41:05,771 INFO L479 AbstractCegarLoop]: Abstraction has 630 states and 739 transitions. [2020-08-19 02:41:05,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 02:41:05,771 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 739 transitions. [2020-08-19 02:41:05,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-19 02:41:05,774 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:41:05,775 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:41:05,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 02:41:05,775 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:41:05,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:41:05,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1394866514, now seen corresponding path program 1 times [2020-08-19 02:41:05,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:41:05,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [652421288] [2020-08-19 02:41:05,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:41:05,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:06,191 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:41:06,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:06,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:06,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:41:06,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:06,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:41:06,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:06,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:41:06,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:06,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:41:06,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:06,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:41:06,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:06,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:41:06,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:06,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 02:41:06,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:06,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:06,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:06,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-19 02:41:06,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:06,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:41:06,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:06,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:41:06,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:06,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:06,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:41:06,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:06,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-19 02:41:06,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:06,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 02:41:06,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:06,348 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 02:41:06,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [652421288] [2020-08-19 02:41:06,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:41:06,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 02:41:06,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279081798] [2020-08-19 02:41:06,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 02:41:06,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:41:06,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 02:41:06,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-19 02:41:06,351 INFO L87 Difference]: Start difference. First operand 630 states and 739 transitions. Second operand 12 states. [2020-08-19 02:41:06,760 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:41:07,433 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:41:08,155 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:41:08,489 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:41:08,738 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:41:09,025 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:41:09,307 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:41:11,114 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:41:11,467 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:41:11,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:41:11,909 INFO L93 Difference]: Finished difference Result 1853 states and 2361 transitions. [2020-08-19 02:41:11,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-19 02:41:11,910 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 97 [2020-08-19 02:41:11,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:41:11,920 INFO L225 Difference]: With dead ends: 1853 [2020-08-19 02:41:11,920 INFO L226 Difference]: Without dead ends: 1437 [2020-08-19 02:41:11,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-19 02:41:11,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1437 states. [2020-08-19 02:41:12,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1437 to 1299. [2020-08-19 02:41:12,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1299 states. [2020-08-19 02:41:12,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1299 states to 1299 states and 1525 transitions. [2020-08-19 02:41:12,102 INFO L78 Accepts]: Start accepts. Automaton has 1299 states and 1525 transitions. Word has length 97 [2020-08-19 02:41:12,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:41:12,102 INFO L479 AbstractCegarLoop]: Abstraction has 1299 states and 1525 transitions. [2020-08-19 02:41:12,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 02:41:12,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1299 states and 1525 transitions. [2020-08-19 02:41:12,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-19 02:41:12,106 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:41:12,106 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:41:12,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 02:41:12,107 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:41:12,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:41:12,107 INFO L82 PathProgramCache]: Analyzing trace with hash 773750625, now seen corresponding path program 1 times [2020-08-19 02:41:12,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:41:12,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [960026654] [2020-08-19 02:41:12,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:41:12,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:12,443 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:41:12,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:12,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:12,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:41:12,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:12,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:41:12,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:12,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:41:12,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:12,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:41:12,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:12,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:41:12,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:12,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:41:12,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:12,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 02:41:12,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:12,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:12,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:12,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:12,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:12,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 02:41:12,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:12,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:41:12,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:12,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:41:12,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:12,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:12,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:12,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:41:12,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:12,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 02:41:12,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:12,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:12,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:12,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-19 02:41:12,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:12,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:12,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:12,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-19 02:41:12,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:12,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-19 02:41:12,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:12,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:41:12,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:12,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:12,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:12,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 02:41:12,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:12,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:41:12,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:12,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-19 02:41:12,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:12,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-08-19 02:41:12,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:12,741 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-19 02:41:12,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [960026654] [2020-08-19 02:41:12,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:41:12,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 02:41:12,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713973967] [2020-08-19 02:41:12,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 02:41:12,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:41:12,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 02:41:12,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-19 02:41:12,744 INFO L87 Difference]: Start difference. First operand 1299 states and 1525 transitions. Second operand 16 states. [2020-08-19 02:41:13,352 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 02:41:13,716 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-19 02:41:14,000 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 02:41:14,273 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 02:41:14,972 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-08-19 02:41:15,348 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-19 02:41:15,683 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-19 02:41:16,099 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-19 02:41:16,437 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-19 02:41:17,582 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:41:18,510 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-08-19 02:41:19,039 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 193 [2020-08-19 02:41:19,357 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:41:19,936 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:41:20,353 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-19 02:41:20,984 WARN L193 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 194 [2020-08-19 02:41:21,626 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-08-19 02:41:22,169 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 02:41:22,739 WARN L193 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 195 [2020-08-19 02:41:23,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:41:23,549 INFO L93 Difference]: Finished difference Result 2875 states and 3500 transitions. [2020-08-19 02:41:23,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-08-19 02:41:23,549 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 157 [2020-08-19 02:41:23,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:41:23,562 INFO L225 Difference]: With dead ends: 2875 [2020-08-19 02:41:23,562 INFO L226 Difference]: Without dead ends: 1784 [2020-08-19 02:41:23,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1032 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=751, Invalid=3031, Unknown=0, NotChecked=0, Total=3782 [2020-08-19 02:41:23,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1784 states. [2020-08-19 02:41:23,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1784 to 1573. [2020-08-19 02:41:23,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-08-19 02:41:23,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 1829 transitions. [2020-08-19 02:41:23,926 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 1829 transitions. Word has length 157 [2020-08-19 02:41:23,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:41:23,926 INFO L479 AbstractCegarLoop]: Abstraction has 1573 states and 1829 transitions. [2020-08-19 02:41:23,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-19 02:41:23,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 1829 transitions. [2020-08-19 02:41:23,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-08-19 02:41:23,939 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:41:23,940 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-19 02:41:23,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 02:41:23,940 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:41:23,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:41:23,941 INFO L82 PathProgramCache]: Analyzing trace with hash -2117575381, now seen corresponding path program 1 times [2020-08-19 02:41:23,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:41:23,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2015972974] [2020-08-19 02:41:23,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:41:24,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,244 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:41:24,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:24,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:41:24,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:41:24,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:41:24,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:41:24,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:41:24,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:41:24,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 02:41:24,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:24,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:24,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 02:41:24,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:41:24,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:41:24,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:24,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:41:24,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 02:41:24,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:24,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-19 02:41:24,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:24,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:24,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:41:24,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 02:41:24,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:41:24,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:24,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 02:41:24,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:41:24,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 02:41:24,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:24,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-08-19 02:41:24,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:24,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:24,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:41:24,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 02:41:24,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:41:24,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:24,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 02:41:24,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 02:41:24,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:24,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-08-19 02:41:24,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:24,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-08-19 02:41:24,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:41:24,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:41:24,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:24,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:41:24,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-08-19 02:41:24,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-08-19 02:41:24,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,781 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 81 proven. 31 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-08-19 02:41:24,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2015972974] [2020-08-19 02:41:24,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:41:24,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-19 02:41:24,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820619082] [2020-08-19 02:41:24,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 02:41:24,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:41:24,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 02:41:24,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-19 02:41:24,792 INFO L87 Difference]: Start difference. First operand 1573 states and 1829 transitions. Second operand 15 states. [2020-08-19 02:41:26,262 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:41:26,525 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:41:26,759 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:41:26,996 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:41:27,242 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:41:28,215 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:41:28,724 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-19 02:41:29,167 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-19 02:41:29,530 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:41:31,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:41:31,999 INFO L93 Difference]: Finished difference Result 4467 states and 5409 transitions. [2020-08-19 02:41:32,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-19 02:41:32,000 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 273 [2020-08-19 02:41:32,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:41:32,014 INFO L225 Difference]: With dead ends: 4467 [2020-08-19 02:41:32,015 INFO L226 Difference]: Without dead ends: 2691 [2020-08-19 02:41:32,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=317, Invalid=1243, Unknown=0, NotChecked=0, Total=1560 [2020-08-19 02:41:32,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2691 states. [2020-08-19 02:41:32,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2691 to 2317. [2020-08-19 02:41:32,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2317 states. [2020-08-19 02:41:32,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2317 states to 2317 states and 2705 transitions. [2020-08-19 02:41:32,493 INFO L78 Accepts]: Start accepts. Automaton has 2317 states and 2705 transitions. Word has length 273 [2020-08-19 02:41:32,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:41:32,494 INFO L479 AbstractCegarLoop]: Abstraction has 2317 states and 2705 transitions. [2020-08-19 02:41:32,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 02:41:32,494 INFO L276 IsEmpty]: Start isEmpty. Operand 2317 states and 2705 transitions. [2020-08-19 02:41:32,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-08-19 02:41:32,503 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:41:32,504 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-19 02:41:32,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 02:41:32,504 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:41:32,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:41:32,504 INFO L82 PathProgramCache]: Analyzing trace with hash 856417488, now seen corresponding path program 1 times [2020-08-19 02:41:32,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:41:32,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [452830312] [2020-08-19 02:41:32,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:41:32,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:32,882 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:41:32,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:32,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:32,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:41:32,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:32,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:41:32,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:32,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:41:32,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:32,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:41:32,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:32,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:41:32,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:32,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:41:32,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:32,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 02:41:32,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:33,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:33,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:33,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:33,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:33,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 02:41:33,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:33,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:41:33,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:33,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:41:33,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:33,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:33,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:33,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:41:33,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:33,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 02:41:33,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:33,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:33,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:33,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-19 02:41:33,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:33,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:33,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:33,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:33,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:33,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:41:33,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:33,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 02:41:33,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:33,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:41:33,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:33,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:33,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:33,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 02:41:33,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:33,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:41:33,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:33,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 02:41:33,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:33,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:33,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:33,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 02:41:33,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:33,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-19 02:41:33,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:33,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:33,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:33,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:33,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:33,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:41:33,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:33,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 02:41:33,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:33,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:41:33,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:33,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:33,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:33,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 02:41:33,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:33,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 02:41:33,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:33,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:33,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:33,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-08-19 02:41:33,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:33,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:33,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:33,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-08-19 02:41:33,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:33,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:41:33,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:33,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:41:33,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:33,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:33,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:33,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:41:33,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:33,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-08-19 02:41:33,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:33,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2020-08-19 02:41:33,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:33,298 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 90 proven. 36 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2020-08-19 02:41:33,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [452830312] [2020-08-19 02:41:33,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:41:33,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 02:41:33,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414037309] [2020-08-19 02:41:33,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 02:41:33,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:41:33,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 02:41:33,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-19 02:41:33,301 INFO L87 Difference]: Start difference. First operand 2317 states and 2705 transitions. Second operand 16 states. [2020-08-19 02:41:33,734 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:41:34,042 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-19 02:41:34,284 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:41:34,525 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:41:35,198 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:41:36,165 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:41:36,454 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:41:36,694 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:41:37,266 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:41:38,052 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191