/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product62.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 03:43:55,972 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 03:43:55,974 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 03:43:56,000 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 03:43:56,000 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 03:43:56,002 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 03:43:56,003 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 03:43:56,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 03:43:56,007 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 03:43:56,007 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 03:43:56,008 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 03:43:56,009 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 03:43:56,010 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 03:43:56,011 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 03:43:56,012 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 03:43:56,013 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 03:43:56,014 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 03:43:56,015 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 03:43:56,016 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 03:43:56,018 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 03:43:56,020 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 03:43:56,021 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 03:43:56,022 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 03:43:56,023 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 03:43:56,025 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 03:43:56,026 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 03:43:56,026 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 03:43:56,027 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 03:43:56,027 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 03:43:56,028 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 03:43:56,028 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 03:43:56,029 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 03:43:56,030 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 03:43:56,030 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 03:43:56,031 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 03:43:56,032 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 03:43:56,032 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 03:43:56,033 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 03:43:56,033 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 03:43:56,034 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 03:43:56,034 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 03:43:56,035 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 [2020-08-22 03:43:56,059 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 03:43:56,059 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 03:43:56,060 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 03:43:56,060 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 03:43:56,061 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 03:43:56,061 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 03:43:56,061 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 03:43:56,061 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 03:43:56,061 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 03:43:56,062 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 03:43:56,062 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 03:43:56,062 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 03:43:56,062 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 03:43:56,062 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 03:43:56,062 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 03:43:56,063 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 03:43:56,063 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 03:43:56,063 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 03:43:56,063 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 03:43:56,063 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 03:43:56,064 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 03:43:56,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 03:43:56,064 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 03:43:56,064 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 03:43:56,064 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 03:43:56,065 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 03:43:56,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 03:43:56,065 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 03:43:56,065 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 03:43:56,065 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-08-22 03:43:56,349 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 03:43:56,362 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 03:43:56,366 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 03:43:56,368 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 03:43:56,368 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 03:43:56,369 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product62.cil.c [2020-08-22 03:43:56,451 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e33d87272/db7443895c3a45818af7fa7103ae5d9a/FLAG63ef2e075 [2020-08-22 03:43:57,002 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 03:43:57,002 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product62.cil.c [2020-08-22 03:43:57,017 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e33d87272/db7443895c3a45818af7fa7103ae5d9a/FLAG63ef2e075 [2020-08-22 03:43:57,281 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e33d87272/db7443895c3a45818af7fa7103ae5d9a [2020-08-22 03:43:57,291 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 03:43:57,292 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 03:43:57,293 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 03:43:57,293 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 03:43:57,297 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 03:43:57,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:43:57" (1/1) ... [2020-08-22 03:43:57,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22589b7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:43:57, skipping insertion in model container [2020-08-22 03:43:57,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:43:57" (1/1) ... [2020-08-22 03:43:57,310 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 03:43:57,376 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 03:43:57,698 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:43:57,807 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 03:43:57,905 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:43:57,950 INFO L208 MainTranslator]: Completed translation [2020-08-22 03:43:57,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:43:57 WrapperNode [2020-08-22 03:43:57,952 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 03:43:57,952 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 03:43:57,952 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 03:43:57,953 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 03:43:57,965 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:43:57" (1/1) ... [2020-08-22 03:43:57,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:43:57" (1/1) ... [2020-08-22 03:43:57,985 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:43:57" (1/1) ... [2020-08-22 03:43:57,985 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:43:57" (1/1) ... [2020-08-22 03:43:58,019 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:43:57" (1/1) ... [2020-08-22 03:43:58,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:43:57" (1/1) ... [2020-08-22 03:43:58,035 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:43:57" (1/1) ... [2020-08-22 03:43:58,042 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 03:43:58,046 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 03:43:58,046 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 03:43:58,046 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 03:43:58,047 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:43:57" (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 [2020-08-22 03:43:58,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 03:43:58,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 03:43:58,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 03:43:58,103 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 03:43:58,103 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 03:43:58,103 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 03:43:58,104 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 03:43:58,104 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 03:43:58,105 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-22 03:43:58,105 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 03:43:58,106 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-22 03:43:58,106 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 03:43:58,106 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 03:43:58,106 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 03:43:58,106 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 03:43:58,107 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 03:43:58,107 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 03:43:58,107 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 03:43:58,108 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 03:43:58,108 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-22 03:43:58,108 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 03:43:58,109 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 03:43:58,109 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 03:43:58,109 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 03:43:58,109 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 03:43:58,111 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 03:43:58,112 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 03:43:58,112 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 03:43:58,112 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 03:43:58,112 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 03:43:58,112 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 03:43:58,112 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 03:43:58,113 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 03:43:58,113 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 03:43:58,113 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 03:43:58,113 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 03:43:58,113 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 03:43:58,113 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 03:43:58,113 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 03:43:58,114 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 03:43:58,114 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 03:43:58,114 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 03:43:58,114 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 03:43:58,115 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 03:43:58,115 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 03:43:58,115 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 03:43:58,115 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 03:43:58,115 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 03:43:58,115 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 03:43:58,116 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 03:43:58,116 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 03:43:58,116 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 03:43:58,116 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 03:43:58,116 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 03:43:58,117 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 03:43:58,117 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 03:43:58,117 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 03:43:58,117 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 03:43:58,118 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 03:43:58,118 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 03:43:58,118 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 03:43:58,118 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 03:43:58,118 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-22 03:43:58,119 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 03:43:58,119 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 03:43:58,119 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 03:43:58,119 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 03:43:58,119 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 03:43:58,119 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-22 03:43:58,119 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 03:43:58,120 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-22 03:43:58,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 03:43:58,121 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 03:43:58,121 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 03:43:58,121 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 03:43:58,122 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 03:43:58,122 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 03:43:58,123 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 03:43:58,123 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 03:43:58,123 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 03:43:58,123 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 03:43:58,123 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 03:43:58,124 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 03:43:58,124 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 03:43:58,124 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 03:43:58,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 03:43:58,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 03:43:58,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 03:43:58,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 03:43:58,125 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 03:43:58,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 03:43:58,125 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 03:43:58,125 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 03:43:58,126 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 03:43:58,126 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 03:43:58,126 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 03:43:58,126 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 03:43:58,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 03:43:58,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 03:43:58,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 03:43:59,266 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 03:43:59,267 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 03:43:59,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:43:59 BoogieIcfgContainer [2020-08-22 03:43:59,277 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 03:43:59,279 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 03:43:59,279 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 03:43:59,282 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 03:43:59,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 03:43:57" (1/3) ... [2020-08-22 03:43:59,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45feb0b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:43:59, skipping insertion in model container [2020-08-22 03:43:59,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:43:57" (2/3) ... [2020-08-22 03:43:59,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45feb0b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:43:59, skipping insertion in model container [2020-08-22 03:43:59,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:43:59" (3/3) ... [2020-08-22 03:43:59,287 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product62.cil.c [2020-08-22 03:43:59,297 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 03:43:59,307 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 03:43:59,321 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 03:43:59,343 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 03:43:59,344 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 03:43:59,344 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 03:43:59,344 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 03:43:59,344 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 03:43:59,345 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 03:43:59,345 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 03:43:59,345 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 03:43:59,368 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states. [2020-08-22 03:43:59,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 03:43:59,378 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:43:59,379 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:43:59,380 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:43:59,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:43:59,386 INFO L82 PathProgramCache]: Analyzing trace with hash 182694304, now seen corresponding path program 1 times [2020-08-22 03:43:59,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:43:59,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572729719] [2020-08-22 03:43:59,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:43:59,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:00,090 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:44:00,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:44:00,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:00,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:44:00,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:00,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:44:00,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:00,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:44:00,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:00,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:44:00,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:00,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 03:44:00,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:00,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 03:44:00,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:00,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:44:00,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572729719] [2020-08-22 03:44:00,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:44:00,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 03:44:00,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44244936] [2020-08-22 03:44:00,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 03:44:00,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:44:00,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 03:44:00,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 03:44:00,213 INFO L87 Difference]: Start difference. First operand 200 states. Second operand 3 states. [2020-08-22 03:44:01,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:44:01,728 INFO L93 Difference]: Finished difference Result 360 states and 465 transitions. [2020-08-22 03:44:01,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 03:44:01,730 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-22 03:44:01,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:44:01,745 INFO L225 Difference]: With dead ends: 360 [2020-08-22 03:44:01,746 INFO L226 Difference]: Without dead ends: 194 [2020-08-22 03:44:01,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 03:44:01,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-08-22 03:44:01,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 157. [2020-08-22 03:44:01,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-08-22 03:44:01,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 185 transitions. [2020-08-22 03:44:01,877 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 185 transitions. Word has length 46 [2020-08-22 03:44:01,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:44:01,877 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 185 transitions. [2020-08-22 03:44:01,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 03:44:01,877 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 185 transitions. [2020-08-22 03:44:01,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-22 03:44:01,881 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:44:01,881 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:44:01,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 03:44:01,882 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:44:01,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:44:01,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1720628684, now seen corresponding path program 1 times [2020-08-22 03:44:01,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:44:01,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [277524045] [2020-08-22 03:44:01,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:44:01,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:02,213 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:44:02,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:44:02,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:02,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:44:02,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:02,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:44:02,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:02,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:44:02,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:02,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:44:02,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:02,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 03:44:02,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:02,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 03:44:02,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:02,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:44:02,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [277524045] [2020-08-22 03:44:02,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:44:02,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 03:44:02,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103153623] [2020-08-22 03:44:02,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 03:44:02,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:44:02,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 03:44:02,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 03:44:02,258 INFO L87 Difference]: Start difference. First operand 157 states and 185 transitions. Second operand 4 states. [2020-08-22 03:44:02,722 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:44:03,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:44:03,735 INFO L93 Difference]: Finished difference Result 289 states and 352 transitions. [2020-08-22 03:44:03,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:44:03,736 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-22 03:44:03,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:44:03,739 INFO L225 Difference]: With dead ends: 289 [2020-08-22 03:44:03,740 INFO L226 Difference]: Without dead ends: 178 [2020-08-22 03:44:03,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:44:03,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-08-22 03:44:03,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 148. [2020-08-22 03:44:03,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-08-22 03:44:03,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 173 transitions. [2020-08-22 03:44:03,782 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 173 transitions. Word has length 47 [2020-08-22 03:44:03,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:44:03,783 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 173 transitions. [2020-08-22 03:44:03,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 03:44:03,783 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 173 transitions. [2020-08-22 03:44:03,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 03:44:03,785 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:44:03,785 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:44:03,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 03:44:03,786 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:44:03,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:44:03,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1588538268, now seen corresponding path program 1 times [2020-08-22 03:44:03,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:44:03,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [862474752] [2020-08-22 03:44:03,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:44:03,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:04,118 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:44:04,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:44:04,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:04,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:44:04,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:04,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:44:04,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:04,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:44:04,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:04,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:44:04,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:04,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 03:44:04,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:04,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 03:44:04,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:04,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:44:04,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [862474752] [2020-08-22 03:44:04,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:44:04,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 03:44:04,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723001698] [2020-08-22 03:44:04,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 03:44:04,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:44:04,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 03:44:04,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 03:44:04,255 INFO L87 Difference]: Start difference. First operand 148 states and 173 transitions. Second operand 8 states. [2020-08-22 03:44:04,700 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:44:05,004 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:44:05,243 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:44:05,492 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:44:06,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:44:06,909 INFO L93 Difference]: Finished difference Result 302 states and 370 transitions. [2020-08-22 03:44:06,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 03:44:06,909 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-22 03:44:06,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:44:06,912 INFO L225 Difference]: With dead ends: 302 [2020-08-22 03:44:06,912 INFO L226 Difference]: Without dead ends: 178 [2020-08-22 03:44:06,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-22 03:44:06,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-08-22 03:44:06,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 148. [2020-08-22 03:44:06,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-08-22 03:44:06,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 172 transitions. [2020-08-22 03:44:06,954 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 172 transitions. Word has length 52 [2020-08-22 03:44:06,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:44:06,955 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 172 transitions. [2020-08-22 03:44:06,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 03:44:06,955 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 172 transitions. [2020-08-22 03:44:06,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-22 03:44:06,963 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:44:06,963 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:44:06,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 03:44:06,964 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:44:06,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:44:06,964 INFO L82 PathProgramCache]: Analyzing trace with hash 265767055, now seen corresponding path program 1 times [2020-08-22 03:44:06,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:44:06,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [561749336] [2020-08-22 03:44:06,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:44:06,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:07,261 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:44:07,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:44:07,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:07,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:44:07,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:07,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:44:07,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:07,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:44:07,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:07,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:44:07,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:07,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 03:44:07,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:07,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:07,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:07,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:07,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:07,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:07,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:07,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-22 03:44:07,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:07,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-22 03:44:07,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:07,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:44:07,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [561749336] [2020-08-22 03:44:07,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:44:07,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 03:44:07,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110695344] [2020-08-22 03:44:07,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 03:44:07,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:44:07,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 03:44:07,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 03:44:07,371 INFO L87 Difference]: Start difference. First operand 148 states and 172 transitions. Second operand 6 states. [2020-08-22 03:44:07,715 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:44:09,022 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:44:09,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:44:09,808 INFO L93 Difference]: Finished difference Result 413 states and 506 transitions. [2020-08-22 03:44:09,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 03:44:09,808 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-08-22 03:44:09,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:44:09,812 INFO L225 Difference]: With dead ends: 413 [2020-08-22 03:44:09,812 INFO L226 Difference]: Without dead ends: 289 [2020-08-22 03:44:09,813 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-22 03:44:09,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-08-22 03:44:09,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 246. [2020-08-22 03:44:09,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-08-22 03:44:09,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 276 transitions. [2020-08-22 03:44:09,885 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 276 transitions. Word has length 70 [2020-08-22 03:44:09,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:44:09,886 INFO L479 AbstractCegarLoop]: Abstraction has 246 states and 276 transitions. [2020-08-22 03:44:09,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 03:44:09,886 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 276 transitions. [2020-08-22 03:44:09,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-22 03:44:09,888 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:44:09,888 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:44:09,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 03:44:09,889 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:44:09,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:44:09,889 INFO L82 PathProgramCache]: Analyzing trace with hash 990610989, now seen corresponding path program 1 times [2020-08-22 03:44:09,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:44:09,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182533135] [2020-08-22 03:44:09,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:44:09,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:10,202 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:44:10,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:44:10,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:10,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:44:10,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:10,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:44:10,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:10,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:44:10,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:10,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:44:10,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:10,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 03:44:10,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:10,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:10,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:10,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:10,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:10,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:10,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:10,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:10,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:10,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:44:10,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:10,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 03:44:10,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:10,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 03:44:10,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:10,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:44:10,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182533135] [2020-08-22 03:44:10,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:44:10,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 03:44:10,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090355716] [2020-08-22 03:44:10,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 03:44:10,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:44:10,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 03:44:10,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-22 03:44:10,411 INFO L87 Difference]: Start difference. First operand 246 states and 276 transitions. Second operand 12 states. [2020-08-22 03:44:10,853 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:44:11,161 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:44:11,411 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:44:11,639 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:44:12,190 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:44:13,191 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:44:13,529 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:44:13,774 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:44:14,034 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:44:14,348 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:44:14,582 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:44:15,974 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:44:16,326 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:44:17,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:44:17,251 INFO L93 Difference]: Finished difference Result 866 states and 1086 transitions. [2020-08-22 03:44:17,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 03:44:17,252 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2020-08-22 03:44:17,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:44:17,262 INFO L225 Difference]: With dead ends: 866 [2020-08-22 03:44:17,262 INFO L226 Difference]: Without dead ends: 644 [2020-08-22 03:44:17,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-22 03:44:17,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2020-08-22 03:44:17,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 582. [2020-08-22 03:44:17,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 582 states. [2020-08-22 03:44:17,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 672 transitions. [2020-08-22 03:44:17,377 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 672 transitions. Word has length 84 [2020-08-22 03:44:17,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:44:17,378 INFO L479 AbstractCegarLoop]: Abstraction has 582 states and 672 transitions. [2020-08-22 03:44:17,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 03:44:17,378 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 672 transitions. [2020-08-22 03:44:17,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-08-22 03:44:17,382 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:44:17,382 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:44:17,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 03:44:17,383 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:44:17,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:44:17,383 INFO L82 PathProgramCache]: Analyzing trace with hash -295396841, now seen corresponding path program 1 times [2020-08-22 03:44:17,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:44:17,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078366760] [2020-08-22 03:44:17,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:44:17,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:17,683 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:44:17,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:44:17,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:17,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:44:17,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:17,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:44:17,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:17,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:44:17,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:17,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:44:17,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:17,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 03:44:17,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:17,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 03:44:17,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:17,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:17,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:17,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:17,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:17,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:17,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:17,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:17,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:17,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:17,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:17,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:44:17,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:17,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:17,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:17,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:17,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:17,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:44:17,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:17,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 03:44:17,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:17,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:17,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:17,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 03:44:17,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:17,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 03:44:17,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:17,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 03:44:17,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:17,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:17,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:17,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:17,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:17,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 03:44:17,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:17,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 03:44:17,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:17,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-08-22 03:44:17,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:17,958 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-22 03:44:17,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078366760] [2020-08-22 03:44:17,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 03:44:17,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 03:44:17,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414515805] [2020-08-22 03:44:17,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 03:44:17,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:44:17,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 03:44:17,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-22 03:44:17,961 INFO L87 Difference]: Start difference. First operand 582 states and 672 transitions. Second operand 13 states. [2020-08-22 03:44:18,482 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:44:19,095 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:44:19,656 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:44:19,912 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 03:44:20,184 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:44:20,427 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:44:20,660 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:44:20,924 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 03:44:21,212 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:44:21,492 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:44:23,455 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:44:23,689 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 03:44:23,937 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:44:24,172 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:44:24,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:44:24,769 INFO L93 Difference]: Finished difference Result 1164 states and 1458 transitions. [2020-08-22 03:44:24,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-22 03:44:24,770 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 156 [2020-08-22 03:44:24,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:44:24,775 INFO L225 Difference]: With dead ends: 1164 [2020-08-22 03:44:24,775 INFO L226 Difference]: Without dead ends: 606 [2020-08-22 03:44:24,778 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=215, Invalid=907, Unknown=0, NotChecked=0, Total=1122 [2020-08-22 03:44:24,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2020-08-22 03:44:24,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 533. [2020-08-22 03:44:24,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 533 states. [2020-08-22 03:44:24,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 619 transitions. [2020-08-22 03:44:24,883 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 619 transitions. Word has length 156 [2020-08-22 03:44:24,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:44:24,884 INFO L479 AbstractCegarLoop]: Abstraction has 533 states and 619 transitions. [2020-08-22 03:44:24,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 03:44:24,884 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 619 transitions. [2020-08-22 03:44:24,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-22 03:44:24,887 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:44:24,887 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:44:24,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 03:44:24,888 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:44:24,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:44:24,888 INFO L82 PathProgramCache]: Analyzing trace with hash -935545817, now seen corresponding path program 1 times [2020-08-22 03:44:24,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:44:24,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052483036] [2020-08-22 03:44:24,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:44:24,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:25,147 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:44:25,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:44:25,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:25,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:44:25,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:25,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:44:25,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:25,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:44:25,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:25,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:44:25,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:25,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 03:44:25,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:25,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:25,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:25,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:25,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:25,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:25,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:25,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:25,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:25,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:25,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:25,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:44:25,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:25,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:25,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:25,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:25,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:25,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:44:25,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:25,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 03:44:25,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:25,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:25,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:25,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-22 03:44:25,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:25,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-22 03:44:25,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:25,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:25,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:25,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:25,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:25,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 03:44:25,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:25,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-22 03:44:25,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:25,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-22 03:44:25,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:25,402 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-22 03:44:25,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2052483036] [2020-08-22 03:44:25,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 03:44:25,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 03:44:25,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451001688] [2020-08-22 03:44:25,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 03:44:25,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:44:25,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 03:44:25,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-22 03:44:25,405 INFO L87 Difference]: Start difference. First operand 533 states and 619 transitions. Second operand 12 states. [2020-08-22 03:44:26,104 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:44:26,418 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:44:26,695 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:44:27,564 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:44:27,800 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:44:28,020 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:44:29,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:44:29,247 INFO L93 Difference]: Finished difference Result 951 states and 1145 transitions. [2020-08-22 03:44:29,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 03:44:29,247 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 148 [2020-08-22 03:44:29,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:44:29,252 INFO L225 Difference]: With dead ends: 951 [2020-08-22 03:44:29,252 INFO L226 Difference]: Without dead ends: 442 [2020-08-22 03:44:29,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 03:44:29,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-08-22 03:44:29,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 416. [2020-08-22 03:44:29,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-08-22 03:44:29,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 483 transitions. [2020-08-22 03:44:29,330 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 483 transitions. Word has length 148 [2020-08-22 03:44:29,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:44:29,331 INFO L479 AbstractCegarLoop]: Abstraction has 416 states and 483 transitions. [2020-08-22 03:44:29,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 03:44:29,331 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 483 transitions. [2020-08-22 03:44:29,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-22 03:44:29,333 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:44:29,334 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:44:29,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 03:44:29,334 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:44:29,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:44:29,334 INFO L82 PathProgramCache]: Analyzing trace with hash 2041878082, now seen corresponding path program 1 times [2020-08-22 03:44:29,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:44:29,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1519869058] [2020-08-22 03:44:29,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:44:29,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:29,600 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:44:29,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:44:29,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:29,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:44:29,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:29,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:44:29,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:29,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:44:29,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:29,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:44:29,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:29,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 03:44:29,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:29,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 03:44:29,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:29,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:29,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:29,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:29,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:29,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:29,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:29,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:29,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:29,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:29,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:29,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:44:29,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:29,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:29,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:29,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:29,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:29,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:44:29,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:29,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 03:44:29,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:29,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:29,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:29,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 03:44:29,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:29,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-22 03:44:29,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:29,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:29,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:29,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:29,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:29,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 03:44:29,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:29,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-08-22 03:44:29,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:29,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-22 03:44:29,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:29,857 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-08-22 03:44:29,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1519869058] [2020-08-22 03:44:29,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 03:44:29,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 03:44:29,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141488112] [2020-08-22 03:44:29,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 03:44:29,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:44:29,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 03:44:29,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-22 03:44:29,860 INFO L87 Difference]: Start difference. First operand 416 states and 483 transitions. Second operand 13 states. [2020-08-22 03:44:30,355 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:44:31,125 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:44:32,273 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:44:32,578 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:44:32,879 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:44:33,150 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:44:33,472 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:44:33,749 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:44:34,934 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:44:35,184 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:44:35,484 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:44:35,737 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:44:36,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:44:36,571 INFO L93 Difference]: Finished difference Result 1172 states and 1412 transitions. [2020-08-22 03:44:36,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 03:44:36,572 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 152 [2020-08-22 03:44:36,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:44:36,577 INFO L225 Difference]: With dead ends: 1172 [2020-08-22 03:44:36,578 INFO L226 Difference]: Without dead ends: 780 [2020-08-22 03:44:36,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=214, Invalid=842, Unknown=0, NotChecked=0, Total=1056 [2020-08-22 03:44:36,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2020-08-22 03:44:36,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 738. [2020-08-22 03:44:36,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2020-08-22 03:44:36,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 848 transitions. [2020-08-22 03:44:36,704 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 848 transitions. Word has length 152 [2020-08-22 03:44:36,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:44:36,704 INFO L479 AbstractCegarLoop]: Abstraction has 738 states and 848 transitions. [2020-08-22 03:44:36,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 03:44:36,705 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 848 transitions. [2020-08-22 03:44:36,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-08-22 03:44:36,708 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:44:36,708 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:44:36,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 03:44:36,708 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:44:36,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:44:36,709 INFO L82 PathProgramCache]: Analyzing trace with hash -508382690, now seen corresponding path program 1 times [2020-08-22 03:44:36,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:44:36,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1703799755] [2020-08-22 03:44:36,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:44:36,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:36,977 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:44:36,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:44:36,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:36,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:44:36,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:36,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:44:36,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:36,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:44:36,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:37,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:44:37,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:37,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 03:44:37,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:37,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 03:44:37,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:37,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 03:44:37,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:37,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:37,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:37,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:37,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:37,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:37,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:37,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:37,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:37,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:37,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:37,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:44:37,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:37,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:37,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:37,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:37,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:37,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:44:37,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:37,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 03:44:37,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:37,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:37,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:37,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 03:44:37,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:37,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 03:44:37,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:37,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:37,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:37,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:37,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:37,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 03:44:37,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:37,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 03:44:37,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:37,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-08-22 03:44:37,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:37,408 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-08-22 03:44:37,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1703799755] [2020-08-22 03:44:37,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 03:44:37,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-22 03:44:37,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795395770] [2020-08-22 03:44:37,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-22 03:44:37,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:44:37,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-22 03:44:37,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2020-08-22 03:44:37,411 INFO L87 Difference]: Start difference. First operand 738 states and 848 transitions. Second operand 18 states. [2020-08-22 03:44:38,177 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:44:38,499 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:44:38,750 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:44:38,986 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:44:39,603 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:44:40,787 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:44:41,127 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:44:41,423 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:44:41,701 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:44:42,054 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:44:42,337 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:44:42,894 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-22 03:44:43,446 WARN L193 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-22 03:44:45,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:44:45,570 INFO L93 Difference]: Finished difference Result 1398 states and 1701 transitions. [2020-08-22 03:44:45,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-22 03:44:45,571 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 156 [2020-08-22 03:44:45,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:44:45,577 INFO L225 Difference]: With dead ends: 1398 [2020-08-22 03:44:45,577 INFO L226 Difference]: Without dead ends: 820 [2020-08-22 03:44:45,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 60 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=364, Invalid=1442, Unknown=0, NotChecked=0, Total=1806 [2020-08-22 03:44:45,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2020-08-22 03:44:45,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 700. [2020-08-22 03:44:45,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 700 states. [2020-08-22 03:44:45,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 801 transitions. [2020-08-22 03:44:45,690 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 801 transitions. Word has length 156 [2020-08-22 03:44:45,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:44:45,691 INFO L479 AbstractCegarLoop]: Abstraction has 700 states and 801 transitions. [2020-08-22 03:44:45,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-22 03:44:45,691 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 801 transitions. [2020-08-22 03:44:45,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-08-22 03:44:45,693 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:44:45,693 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:44:45,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 03:44:45,694 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:44:45,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:44:45,694 INFO L82 PathProgramCache]: Analyzing trace with hash -620136546, now seen corresponding path program 2 times [2020-08-22 03:44:45,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:44:45,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [937167356] [2020-08-22 03:44:45,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:44:45,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:46,023 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:44:46,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:44:46,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:46,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:44:46,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:46,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:44:46,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:46,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:44:46,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:46,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:44:46,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:46,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 03:44:46,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:46,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 03:44:46,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:46,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:46,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:46,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:46,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:46,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:46,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:46,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:46,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:46,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:46,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:46,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:44:46,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:46,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:46,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:46,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:46,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:46,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:44:46,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:46,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 03:44:46,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:46,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:46,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:46,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 03:44:46,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:46,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 03:44:46,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:46,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 03:44:46,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:46,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:46,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:46,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:46,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:46,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 03:44:46,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:46,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 03:44:46,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:46,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-08-22 03:44:46,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:46,252 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-08-22 03:44:46,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [937167356] [2020-08-22 03:44:46,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 03:44:46,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-22 03:44:46,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307638550] [2020-08-22 03:44:46,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 03:44:46,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:44:46,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 03:44:46,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-22 03:44:46,255 INFO L87 Difference]: Start difference. First operand 700 states and 801 transitions. Second operand 11 states. [2020-08-22 03:44:46,841 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:44:48,754 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:44:49,039 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:44:49,306 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:44:49,722 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:44:49,992 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:44:50,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:44:50,376 INFO L93 Difference]: Finished difference Result 826 states and 1019 transitions. [2020-08-22 03:44:50,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 03:44:50,376 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 156 [2020-08-22 03:44:50,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:44:50,381 INFO L225 Difference]: With dead ends: 826 [2020-08-22 03:44:50,382 INFO L226 Difference]: Without dead ends: 823 [2020-08-22 03:44:50,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=187, Invalid=463, Unknown=0, NotChecked=0, Total=650 [2020-08-22 03:44:50,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2020-08-22 03:44:50,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 700. [2020-08-22 03:44:50,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 700 states. [2020-08-22 03:44:50,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 799 transitions. [2020-08-22 03:44:50,516 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 799 transitions. Word has length 156 [2020-08-22 03:44:50,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:44:50,516 INFO L479 AbstractCegarLoop]: Abstraction has 700 states and 799 transitions. [2020-08-22 03:44:50,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 03:44:50,517 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 799 transitions. [2020-08-22 03:44:50,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-08-22 03:44:50,520 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:44:50,521 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:44:50,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 03:44:50,521 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:44:50,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:44:50,522 INFO L82 PathProgramCache]: Analyzing trace with hash 350169461, now seen corresponding path program 1 times [2020-08-22 03:44:50,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:44:50,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [154081000] [2020-08-22 03:44:50,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:44:50,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:50,833 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:44:50,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:44:50,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:50,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:44:50,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:50,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:44:50,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:50,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:44:50,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:50,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:44:50,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:50,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 03:44:50,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:50,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 03:44:50,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:50,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:50,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:50,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:50,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:50,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:50,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:50,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:50,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:50,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:50,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:50,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:44:50,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:50,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:50,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:50,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:50,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:50,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:44:50,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:50,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 03:44:50,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:50,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:50,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:50,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 03:44:50,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:50,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-22 03:44:51,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:51,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:51,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:51,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:51,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:51,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 03:44:51,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:51,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:51,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:51,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:51,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:51,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 03:44:51,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:51,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:51,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:51,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 03:44:51,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:51,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-08-22 03:44:51,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:51,087 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-22 03:44:51,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [154081000] [2020-08-22 03:44:51,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 03:44:51,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 03:44:51,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388030546] [2020-08-22 03:44:51,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 03:44:51,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:44:51,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 03:44:51,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-22 03:44:51,091 INFO L87 Difference]: Start difference. First operand 700 states and 799 transitions. Second operand 12 states. [2020-08-22 03:44:51,641 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:44:52,537 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:44:53,119 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:44:53,419 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:44:53,678 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:44:53,935 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:44:54,232 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:44:54,525 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:44:56,345 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:44:56,612 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188