/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --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_spec2_product40.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 02:01:56,032 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 02:01:56,034 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 02:01:56,060 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 02:01:56,060 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 02:01:56,061 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 02:01:56,063 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 02:01:56,065 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 02:01:56,066 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 02:01:56,067 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 02:01:56,068 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 02:01:56,069 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 02:01:56,070 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 02:01:56,071 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 02:01:56,072 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 02:01:56,073 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 02:01:56,074 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 02:01:56,075 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 02:01:56,076 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 02:01:56,078 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 02:01:56,083 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 02:01:56,084 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 02:01:56,087 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 02:01:56,088 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 02:01:56,093 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 02:01:56,093 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 02:01:56,094 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 02:01:56,095 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 02:01:56,098 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 02:01:56,099 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 02:01:56,099 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 02:01:56,100 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 02:01:56,101 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 02:01:56,102 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 02:01:56,103 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 02:01:56,103 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 02:01:56,105 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 02:01:56,105 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 02:01:56,105 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 02:01:56,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 02:01:56,108 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 02:01:56,109 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 02:01:56,161 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 02:01:56,162 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 02:01:56,166 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 02:01:56,167 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 02:01:56,167 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 02:01:56,167 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 02:01:56,167 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 02:01:56,167 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 02:01:56,168 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 02:01:56,168 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 02:01:56,169 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 02:01:56,169 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 02:01:56,169 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 02:01:56,169 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 02:01:56,169 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 02:01:56,169 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 02:01:56,170 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 02:01:56,170 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 02:01:56,170 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 02:01:56,170 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 02:01:56,170 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 02:01:56,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 02:01:56,172 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 02:01:56,172 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 02:01:56,172 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 02:01:56,172 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 02:01:56,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 02:01:56,173 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 02:01:56,173 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 02:01:56,173 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=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-08-22 02:01:56,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 02:01:56,510 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 02:01:56,514 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 02:01:56,515 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 02:01:56,515 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 02:01:56,516 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product40.cil.c [2020-08-22 02:01:56,594 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e88a52f6/9180832cc6aa42d6a942f77a76726c55/FLAG6bff543d8 [2020-08-22 02:01:57,119 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 02:01:57,120 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product40.cil.c [2020-08-22 02:01:57,134 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e88a52f6/9180832cc6aa42d6a942f77a76726c55/FLAG6bff543d8 [2020-08-22 02:01:57,428 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e88a52f6/9180832cc6aa42d6a942f77a76726c55 [2020-08-22 02:01:57,437 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 02:01:57,439 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 02:01:57,440 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 02:01:57,440 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 02:01:57,444 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 02:01:57,445 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:01:57" (1/1) ... [2020-08-22 02:01:57,448 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d70efc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:01:57, skipping insertion in model container [2020-08-22 02:01:57,448 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:01:57" (1/1) ... [2020-08-22 02:01:57,456 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 02:01:57,496 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 02:01:57,868 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:01:57,885 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 02:01:57,987 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:01:58,026 INFO L208 MainTranslator]: Completed translation [2020-08-22 02:01:58,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:01:58 WrapperNode [2020-08-22 02:01:58,027 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 02:01:58,028 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 02:01:58,028 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 02:01:58,028 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 02:01:58,039 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:01:58" (1/1) ... [2020-08-22 02:01:58,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:01:58" (1/1) ... [2020-08-22 02:01:58,058 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:01:58" (1/1) ... [2020-08-22 02:01:58,063 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:01:58" (1/1) ... [2020-08-22 02:01:58,098 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:01:58" (1/1) ... [2020-08-22 02:01:58,109 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:01:58" (1/1) ... [2020-08-22 02:01:58,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:01:58" (1/1) ... [2020-08-22 02:01:58,122 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 02:01:58,122 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 02:01:58,122 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 02:01:58,122 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 02:01:58,123 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:01:58" (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 02:01:58,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 02:01:58,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 02:01:58,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 02:01:58,182 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-22 02:01:58,182 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-22 02:01:58,182 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 02:01:58,182 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 02:01:58,183 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 02:01:58,183 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 02:01:58,183 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 02:01:58,183 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 02:01:58,183 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 02:01:58,183 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 02:01:58,183 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 02:01:58,184 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 02:01:58,184 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 02:01:58,184 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 02:01:58,184 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 02:01:58,184 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 02:01:58,184 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 02:01:58,185 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 02:01:58,185 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 02:01:58,185 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 02:01:58,185 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 02:01:58,185 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 02:01:58,185 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 02:01:58,186 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 02:01:58,186 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 02:01:58,186 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 02:01:58,186 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 02:01:58,186 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 02:01:58,186 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 02:01:58,187 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 02:01:58,187 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 02:01:58,187 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 02:01:58,187 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 02:01:58,187 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 02:01:58,187 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 02:01:58,188 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 02:01:58,188 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 02:01:58,188 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 02:01:58,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 02:01:58,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 02:01:58,189 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 02:01:58,189 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 02:01:58,189 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 02:01:58,189 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 02:01:58,189 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-22 02:01:58,189 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-22 02:01:58,189 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 02:01:58,189 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 02:01:58,190 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 02:01:58,190 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 02:01:58,190 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 02:01:58,190 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 02:01:58,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 02:01:58,190 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 02:01:58,191 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 02:01:58,191 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 02:01:58,191 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 02:01:58,191 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 02:01:58,191 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 02:01:58,191 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 02:01:58,191 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 02:01:58,191 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 02:01:58,192 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 02:01:58,192 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 02:01:58,192 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 02:01:58,192 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 02:01:58,192 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 02:01:58,192 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 02:01:58,192 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 02:01:58,192 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 02:01:58,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 02:01:58,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 02:01:58,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 02:01:58,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 02:01:58,193 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 02:01:58,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 02:01:58,193 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 02:01:58,194 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 02:01:58,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 02:01:58,194 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 02:01:58,194 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 02:01:58,194 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 02:01:58,194 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 02:01:58,195 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 02:01:58,195 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 02:01:58,195 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 02:01:58,195 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 02:01:58,195 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 02:01:58,195 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 02:01:58,195 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 02:01:58,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 02:01:58,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 02:01:58,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 02:01:59,294 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 02:01:59,295 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 02:01:59,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:01:59 BoogieIcfgContainer [2020-08-22 02:01:59,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 02:01:59,302 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 02:01:59,302 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 02:01:59,305 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 02:01:59,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 02:01:57" (1/3) ... [2020-08-22 02:01:59,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fdf5de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:01:59, skipping insertion in model container [2020-08-22 02:01:59,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:01:58" (2/3) ... [2020-08-22 02:01:59,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fdf5de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:01:59, skipping insertion in model container [2020-08-22 02:01:59,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:01:59" (3/3) ... [2020-08-22 02:01:59,309 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product40.cil.c [2020-08-22 02:01:59,320 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 02:01:59,328 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 02:01:59,343 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 02:01:59,371 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 02:01:59,372 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 02:01:59,372 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 02:01:59,372 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 02:01:59,372 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 02:01:59,373 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 02:01:59,373 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 02:01:59,373 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 02:01:59,397 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states. [2020-08-22 02:01:59,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 02:01:59,409 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:01:59,410 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] [2020-08-22 02:01:59,410 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:01:59,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:01:59,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1292486909, now seen corresponding path program 1 times [2020-08-22 02:01:59,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:01:59,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [102891593] [2020-08-22 02:01:59,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:01:59,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:00,107 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:02:00,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:02:00,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:00,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:02:00,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:00,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:02:00,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:00,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:02:00,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:00,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:02:00,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:00,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:02:00,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:00,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 02:02:00,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:00,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 02:02:00,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:00,214 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 02:02:00,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [102891593] [2020-08-22 02:02:00,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:02:00,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 02:02:00,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179816616] [2020-08-22 02:02:00,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 02:02:00,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:02:00,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 02:02:00,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 02:02:00,245 INFO L87 Difference]: Start difference. First operand 181 states. Second operand 4 states. [2020-08-22 02:02:01,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:02:01,432 INFO L93 Difference]: Finished difference Result 311 states and 408 transitions. [2020-08-22 02:02:01,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 02:02:01,434 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-22 02:02:01,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:02:01,449 INFO L225 Difference]: With dead ends: 311 [2020-08-22 02:02:01,449 INFO L226 Difference]: Without dead ends: 174 [2020-08-22 02:02:01,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 02:02:01,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-08-22 02:02:01,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 138. [2020-08-22 02:02:01,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-22 02:02:01,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 163 transitions. [2020-08-22 02:02:01,570 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 163 transitions. Word has length 51 [2020-08-22 02:02:01,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:02:01,571 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 163 transitions. [2020-08-22 02:02:01,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 02:02:01,571 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 163 transitions. [2020-08-22 02:02:01,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 02:02:01,582 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:02:01,582 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 02:02:01,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 02:02:01,583 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:02:01,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:02:01,583 INFO L82 PathProgramCache]: Analyzing trace with hash -11798802, now seen corresponding path program 1 times [2020-08-22 02:02:01,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:02:01,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900118595] [2020-08-22 02:02:01,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:02:01,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:02,014 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:02:02,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:02:02,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:02,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:02:02,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:02,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:02:02,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:02,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:02:02,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:02,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:02:02,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:02,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:02:02,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:02,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 02:02:02,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:02,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 02:02:02,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:02,103 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 02:02:02,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1900118595] [2020-08-22 02:02:02,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:02:02,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 02:02:02,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839171569] [2020-08-22 02:02:02,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 02:02:02,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:02:02,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 02:02:02,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 02:02:02,107 INFO L87 Difference]: Start difference. First operand 138 states and 163 transitions. Second operand 5 states. [2020-08-22 02:02:02,545 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:02:03,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:02:03,599 INFO L93 Difference]: Finished difference Result 246 states and 307 transitions. [2020-08-22 02:02:03,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 02:02:03,600 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-22 02:02:03,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:02:03,608 INFO L225 Difference]: With dead ends: 246 [2020-08-22 02:02:03,608 INFO L226 Difference]: Without dead ends: 164 [2020-08-22 02:02:03,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-22 02:02:03,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-08-22 02:02:03,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 129. [2020-08-22 02:02:03,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-08-22 02:02:03,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 151 transitions. [2020-08-22 02:02:03,655 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 151 transitions. Word has length 52 [2020-08-22 02:02:03,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:02:03,655 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 151 transitions. [2020-08-22 02:02:03,656 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 02:02:03,656 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 151 transitions. [2020-08-22 02:02:03,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 02:02:03,658 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:02:03,658 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:02:03,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 02:02:03,658 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:02:03,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:02:03,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1490469892, now seen corresponding path program 1 times [2020-08-22 02:02:03,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:02:03,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [383539110] [2020-08-22 02:02:03,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:02:03,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:03,986 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:02:03,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:02:04,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:04,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:02:04,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:04,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:02:04,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:04,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:02:04,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:04,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:02:04,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:04,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:02:04,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:04,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 02:02:04,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:04,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 02:02:04,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:04,079 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 02:02:04,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [383539110] [2020-08-22 02:02:04,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:02:04,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 02:02:04,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931820876] [2020-08-22 02:02:04,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 02:02:04,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:02:04,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 02:02:04,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 02:02:04,082 INFO L87 Difference]: Start difference. First operand 129 states and 151 transitions. Second operand 9 states. [2020-08-22 02:02:04,510 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:02:04,843 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:02:05,114 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:02:05,367 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:02:06,146 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:02:08,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:02:08,048 INFO L93 Difference]: Finished difference Result 439 states and 556 transitions. [2020-08-22 02:02:08,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 02:02:08,048 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-22 02:02:08,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:02:08,057 INFO L225 Difference]: With dead ends: 439 [2020-08-22 02:02:08,057 INFO L226 Difference]: Without dead ends: 338 [2020-08-22 02:02:08,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-22 02:02:08,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-08-22 02:02:08,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 269. [2020-08-22 02:02:08,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-08-22 02:02:08,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 328 transitions. [2020-08-22 02:02:08,132 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 328 transitions. Word has length 57 [2020-08-22 02:02:08,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:02:08,132 INFO L479 AbstractCegarLoop]: Abstraction has 269 states and 328 transitions. [2020-08-22 02:02:08,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 02:02:08,132 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 328 transitions. [2020-08-22 02:02:08,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-22 02:02:08,134 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:02:08,134 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] [2020-08-22 02:02:08,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 02:02:08,135 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:02:08,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:02:08,135 INFO L82 PathProgramCache]: Analyzing trace with hash -512554003, now seen corresponding path program 1 times [2020-08-22 02:02:08,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:02:08,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [17186132] [2020-08-22 02:02:08,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:02:08,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:08,425 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:02:08,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:02:08,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:08,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:02:08,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:08,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:02:08,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:08,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:02:08,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:08,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:02:08,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:08,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:02:08,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:08,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 02:02:08,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:08,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 02:02:08,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:08,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 02:02:08,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:08,565 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 02:02:08,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [17186132] [2020-08-22 02:02:08,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:02:08,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 02:02:08,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947178432] [2020-08-22 02:02:08,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 02:02:08,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:02:08,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 02:02:08,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 02:02:08,568 INFO L87 Difference]: Start difference. First operand 269 states and 328 transitions. Second operand 9 states. [2020-08-22 02:02:08,924 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:02:09,990 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:02:10,391 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:02:10,619 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:02:10,892 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:02:12,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:02:12,337 INFO L93 Difference]: Finished difference Result 864 states and 1152 transitions. [2020-08-22 02:02:12,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-22 02:02:12,337 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-08-22 02:02:12,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:02:12,345 INFO L225 Difference]: With dead ends: 864 [2020-08-22 02:02:12,345 INFO L226 Difference]: Without dead ends: 623 [2020-08-22 02:02:12,347 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-22 02:02:12,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2020-08-22 02:02:12,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 486. [2020-08-22 02:02:12,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 486 states. [2020-08-22 02:02:12,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 596 transitions. [2020-08-22 02:02:12,475 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 596 transitions. Word has length 62 [2020-08-22 02:02:12,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:02:12,476 INFO L479 AbstractCegarLoop]: Abstraction has 486 states and 596 transitions. [2020-08-22 02:02:12,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 02:02:12,476 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 596 transitions. [2020-08-22 02:02:12,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-22 02:02:12,478 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:02:12,479 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] [2020-08-22 02:02:12,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 02:02:12,479 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:02:12,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:02:12,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1361940215, now seen corresponding path program 1 times [2020-08-22 02:02:12,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:02:12,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1325740836] [2020-08-22 02:02:12,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:02:12,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:12,744 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:02:12,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:02:12,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:12,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:02:12,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:12,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:02:12,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:12,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:02:12,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:12,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:02:12,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:12,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:02:12,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:12,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 02:02:12,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:12,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 02:02:12,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:12,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 02:02:12,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:12,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-22 02:02:12,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:12,856 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 02:02:12,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1325740836] [2020-08-22 02:02:12,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:02:12,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 02:02:12,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59135174] [2020-08-22 02:02:12,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 02:02:12,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:02:12,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 02:02:12,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 02:02:12,859 INFO L87 Difference]: Start difference. First operand 486 states and 596 transitions. Second operand 10 states. [2020-08-22 02:02:13,297 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:02:14,335 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:02:14,603 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:02:14,916 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:02:15,623 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:02:16,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:02:16,970 INFO L93 Difference]: Finished difference Result 1373 states and 1890 transitions. [2020-08-22 02:02:16,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-22 02:02:16,970 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-08-22 02:02:16,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:02:16,978 INFO L225 Difference]: With dead ends: 1373 [2020-08-22 02:02:16,979 INFO L226 Difference]: Without dead ends: 915 [2020-08-22 02:02:16,981 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2020-08-22 02:02:16,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2020-08-22 02:02:17,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 709. [2020-08-22 02:02:17,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 709 states. [2020-08-22 02:02:17,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 863 transitions. [2020-08-22 02:02:17,130 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 863 transitions. Word has length 66 [2020-08-22 02:02:17,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:02:17,131 INFO L479 AbstractCegarLoop]: Abstraction has 709 states and 863 transitions. [2020-08-22 02:02:17,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 02:02:17,131 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 863 transitions. [2020-08-22 02:02:17,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-22 02:02:17,133 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:02:17,133 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, 1, 1, 1, 1, 1] [2020-08-22 02:02:17,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 02:02:17,134 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:02:17,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:02:17,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1572074791, now seen corresponding path program 1 times [2020-08-22 02:02:17,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:02:17,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213496670] [2020-08-22 02:02:17,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:02:17,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:17,388 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:02:17,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:02:17,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:17,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:02:17,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:17,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:02:17,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:17,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:02:17,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:17,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:02:17,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:17,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:02:17,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:17,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 02:02:17,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:17,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 02:02:17,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:17,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:02:17,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:17,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:02:17,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:17,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:02:17,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:17,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:02:17,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:17,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-22 02:02:17,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:17,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 02:02:17,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:17,544 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 02:02:17,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213496670] [2020-08-22 02:02:17,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:02:17,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 02:02:17,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239188816] [2020-08-22 02:02:17,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 02:02:17,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:02:17,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 02:02:17,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 02:02:17,546 INFO L87 Difference]: Start difference. First operand 709 states and 863 transitions. Second operand 10 states. [2020-08-22 02:02:18,021 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:02:19,219 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:02:19,497 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 02:02:19,787 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:02:20,069 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:02:21,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:02:21,804 INFO L93 Difference]: Finished difference Result 2413 states and 3450 transitions. [2020-08-22 02:02:21,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 02:02:21,805 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-08-22 02:02:21,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:02:21,819 INFO L225 Difference]: With dead ends: 2413 [2020-08-22 02:02:21,820 INFO L226 Difference]: Without dead ends: 1732 [2020-08-22 02:02:21,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-08-22 02:02:21,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2020-08-22 02:02:22,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 1279. [2020-08-22 02:02:22,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1279 states. [2020-08-22 02:02:22,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 1554 transitions. [2020-08-22 02:02:22,199 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 1554 transitions. Word has length 89 [2020-08-22 02:02:22,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:02:22,199 INFO L479 AbstractCegarLoop]: Abstraction has 1279 states and 1554 transitions. [2020-08-22 02:02:22,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 02:02:22,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 1554 transitions. [2020-08-22 02:02:22,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-22 02:02:22,204 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:02:22,204 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, 1, 1, 1, 1, 1] [2020-08-22 02:02:22,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 02:02:22,206 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:02:22,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:02:22,207 INFO L82 PathProgramCache]: Analyzing trace with hash -153406106, now seen corresponding path program 1 times [2020-08-22 02:02:22,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:02:22,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1183742492] [2020-08-22 02:02:22,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:02:22,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:22,490 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:02:22,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:02:22,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:22,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:02:22,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:22,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:02:22,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:22,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:02:22,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:22,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:02:22,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:22,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:02:22,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:22,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 02:02:22,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:22,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 02:02:22,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:22,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:02:22,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:22,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:02:22,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:22,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:02:22,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:22,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:02:22,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:22,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-22 02:02:22,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:22,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 02:02:22,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:22,631 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 02:02:22,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1183742492] [2020-08-22 02:02:22,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:02:22,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 02:02:22,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101699537] [2020-08-22 02:02:22,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 02:02:22,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:02:22,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 02:02:22,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 02:02:22,634 INFO L87 Difference]: Start difference. First operand 1279 states and 1554 transitions. Second operand 10 states. [2020-08-22 02:02:23,836 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:02:24,222 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 02:02:24,490 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:02:24,729 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:02:26,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:02:26,011 INFO L93 Difference]: Finished difference Result 2983 states and 3988 transitions. [2020-08-22 02:02:26,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 02:02:26,011 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-08-22 02:02:26,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:02:26,025 INFO L225 Difference]: With dead ends: 2983 [2020-08-22 02:02:26,026 INFO L226 Difference]: Without dead ends: 1732 [2020-08-22 02:02:26,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-22 02:02:26,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2020-08-22 02:02:26,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 1319. [2020-08-22 02:02:26,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1319 states. [2020-08-22 02:02:26,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1594 transitions. [2020-08-22 02:02:26,367 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1594 transitions. Word has length 89 [2020-08-22 02:02:26,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:02:26,371 INFO L479 AbstractCegarLoop]: Abstraction has 1319 states and 1594 transitions. [2020-08-22 02:02:26,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 02:02:26,371 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1594 transitions. [2020-08-22 02:02:26,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-22 02:02:26,375 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:02:26,375 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, 1, 1, 1, 1, 1] [2020-08-22 02:02:26,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 02:02:26,376 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:02:26,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:02:26,376 INFO L82 PathProgramCache]: Analyzing trace with hash 548193768, now seen corresponding path program 1 times [2020-08-22 02:02:26,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:02:26,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1355979233] [2020-08-22 02:02:26,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:02:26,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:26,645 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:02:26,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:02:26,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:26,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:02:26,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:26,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:02:26,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:26,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:02:26,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:26,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:02:26,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:26,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:02:26,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:26,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 02:02:26,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:26,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 02:02:26,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:26,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:02:26,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:26,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:02:26,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:26,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:02:26,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:26,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:02:26,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:26,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-22 02:02:26,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:26,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 02:02:26,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:26,801 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 02:02:26,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1355979233] [2020-08-22 02:02:26,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:02:26,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 02:02:26,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148437486] [2020-08-22 02:02:26,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 02:02:26,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:02:26,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 02:02:26,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-22 02:02:26,807 INFO L87 Difference]: Start difference. First operand 1319 states and 1594 transitions. Second operand 12 states. [2020-08-22 02:02:27,285 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:02:27,522 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:02:27,752 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:02:28,590 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:02:28,859 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:02:29,094 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:02:30,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:02:30,232 INFO L93 Difference]: Finished difference Result 2667 states and 3530 transitions. [2020-08-22 02:02:30,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 02:02:30,237 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 89 [2020-08-22 02:02:30,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:02:30,246 INFO L225 Difference]: With dead ends: 2667 [2020-08-22 02:02:30,246 INFO L226 Difference]: Without dead ends: 1376 [2020-08-22 02:02:30,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-22 02:02:30,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2020-08-22 02:02:30,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1087. [2020-08-22 02:02:30,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1087 states. [2020-08-22 02:02:30,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 1282 transitions. [2020-08-22 02:02:30,479 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 1282 transitions. Word has length 89 [2020-08-22 02:02:30,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:02:30,479 INFO L479 AbstractCegarLoop]: Abstraction has 1087 states and 1282 transitions. [2020-08-22 02:02:30,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 02:02:30,480 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 1282 transitions. [2020-08-22 02:02:30,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-22 02:02:30,485 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:02:30,485 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:02:30,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 02:02:30,486 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:02:30,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:02:30,486 INFO L82 PathProgramCache]: Analyzing trace with hash 81932175, now seen corresponding path program 1 times [2020-08-22 02:02:30,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:02:30,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865495268] [2020-08-22 02:02:30,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:02:30,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:30,773 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:02:30,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:02:30,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:30,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:02:30,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:30,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:02:30,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:30,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:02:30,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:30,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:02:30,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:30,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:02:30,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:30,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:02:30,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:30,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 02:02:30,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:30,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 02:02:30,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:30,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:02:30,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:30,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:02:30,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:30,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:02:30,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:30,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:02:30,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:30,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-22 02:02:30,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:30,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 02:02:30,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:30,873 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 02:02:30,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1865495268] [2020-08-22 02:02:30,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:02:30,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 02:02:30,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401493955] [2020-08-22 02:02:30,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 02:02:30,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:02:30,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 02:02:30,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-22 02:02:30,876 INFO L87 Difference]: Start difference. First operand 1087 states and 1282 transitions. Second operand 8 states. [2020-08-22 02:02:31,227 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:02:33,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:02:33,694 INFO L93 Difference]: Finished difference Result 2185 states and 2908 transitions. [2020-08-22 02:02:33,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 02:02:33,695 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-08-22 02:02:33,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:02:33,709 INFO L225 Difference]: With dead ends: 2185 [2020-08-22 02:02:33,710 INFO L226 Difference]: Without dead ends: 2182 [2020-08-22 02:02:33,712 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-22 02:02:33,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2182 states. [2020-08-22 02:02:34,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2182 to 1684. [2020-08-22 02:02:34,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1684 states. [2020-08-22 02:02:34,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 2013 transitions. [2020-08-22 02:02:34,169 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 2013 transitions. Word has length 93 [2020-08-22 02:02:34,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:02:34,171 INFO L479 AbstractCegarLoop]: Abstraction has 1684 states and 2013 transitions. [2020-08-22 02:02:34,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 02:02:34,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 2013 transitions. [2020-08-22 02:02:34,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-22 02:02:34,178 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:02:34,179 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:02:34,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 02:02:34,179 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:02:34,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:02:34,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1581752101, now seen corresponding path program 1 times [2020-08-22 02:02:34,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:02:34,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1085238044] [2020-08-22 02:02:34,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:02:34,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:34,460 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:02:34,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:02:34,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:34,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:02:34,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:34,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:02:34,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:34,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:02:34,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:34,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:02:34,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:34,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:02:34,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:34,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:02:34,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:34,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 02:02:34,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:34,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 02:02:34,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:34,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:02:34,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:34,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:02:34,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:34,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:02:34,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:34,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:02:34,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:34,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:02:34,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:34,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 02:02:34,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:34,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:02:34,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:34,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 02:02:34,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:34,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 02:02:34,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:34,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 02:02:34,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:34,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:02:34,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:34,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:02:34,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:34,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 02:02:34,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:34,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:02:34,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:34,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-22 02:02:34,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:34,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-22 02:02:34,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:34,660 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-22 02:02:34,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1085238044] [2020-08-22 02:02:34,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:02:34,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 02:02:34,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058128198] [2020-08-22 02:02:34,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 02:02:34,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:02:34,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 02:02:34,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-08-22 02:02:34,663 INFO L87 Difference]: Start difference. First operand 1684 states and 2013 transitions. Second operand 10 states. [2020-08-22 02:02:35,709 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:02:37,877 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:02:38,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:02:38,824 INFO L93 Difference]: Finished difference Result 5021 states and 6634 transitions. [2020-08-22 02:02:38,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-22 02:02:38,825 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 152 [2020-08-22 02:02:38,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:02:38,845 INFO L225 Difference]: With dead ends: 5021 [2020-08-22 02:02:38,845 INFO L226 Difference]: Without dead ends: 3689 [2020-08-22 02:02:38,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 62 SyntacticMatches, 5 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=259, Invalid=797, Unknown=0, NotChecked=0, Total=1056 [2020-08-22 02:02:38,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3689 states. [2020-08-22 02:02:39,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3689 to 3132. [2020-08-22 02:02:39,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3132 states. [2020-08-22 02:02:39,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3132 states to 3132 states and 3769 transitions. [2020-08-22 02:02:39,475 INFO L78 Accepts]: Start accepts. Automaton has 3132 states and 3769 transitions. Word has length 152 [2020-08-22 02:02:39,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:02:39,476 INFO L479 AbstractCegarLoop]: Abstraction has 3132 states and 3769 transitions. [2020-08-22 02:02:39,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 02:02:39,476 INFO L276 IsEmpty]: Start isEmpty. Operand 3132 states and 3769 transitions. [2020-08-22 02:02:39,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-22 02:02:39,486 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:02:39,486 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:02:39,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 02:02:39,487 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:02:39,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:02:39,487 INFO L82 PathProgramCache]: Analyzing trace with hash 688265763, now seen corresponding path program 1 times [2020-08-22 02:02:39,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:02:39,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1871001655] [2020-08-22 02:02:39,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:02:39,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:39,808 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:02:39,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:02:39,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:39,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:02:39,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:39,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:02:39,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:39,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:02:39,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:39,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:02:39,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:39,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:02:39,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:39,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:02:39,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:39,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 02:02:39,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:39,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 02:02:39,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:39,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:02:39,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:39,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:02:39,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:39,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:02:39,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:39,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:02:39,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:39,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:02:39,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:39,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 02:02:39,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:39,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:02:39,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:39,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 02:02:39,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:39,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 02:02:39,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:39,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 02:02:39,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:40,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:02:40,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:40,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:02:40,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:40,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 02:02:40,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:40,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:02:40,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:40,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-22 02:02:40,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:40,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-22 02:02:40,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:40,154 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-08-22 02:02:40,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1871001655] [2020-08-22 02:02:40,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:02:40,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-22 02:02:40,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289221146] [2020-08-22 02:02:40,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-22 02:02:40,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:02:40,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-22 02:02:40,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-22 02:02:40,157 INFO L87 Difference]: Start difference. First operand 3132 states and 3769 transitions. Second operand 19 states. [2020-08-22 02:02:41,067 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:02:41,606 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:02:41,884 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:02:42,143 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:02:42,922 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:02:43,571 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:02:43,987 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:02:46,588 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:02:46,848 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:02:47,133 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:02:47,455 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:02:47,694 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:02:47,940 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:02:48,220 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:02:48,458 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:02:49,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:02:49,611 INFO L93 Difference]: Finished difference Result 6032 states and 7600 transitions. [2020-08-22 02:02:49,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-08-22 02:02:49,613 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 152 [2020-08-22 02:02:49,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:02:49,630 INFO L225 Difference]: With dead ends: 6032 [2020-08-22 02:02:49,630 INFO L226 Difference]: Without dead ends: 2928 [2020-08-22 02:02:49,641 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 917 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=608, Invalid=2814, Unknown=0, NotChecked=0, Total=3422 [2020-08-22 02:02:49,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2020-08-22 02:02:50,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 2436. [2020-08-22 02:02:50,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2436 states. [2020-08-22 02:02:50,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2436 states to 2436 states and 2848 transitions. [2020-08-22 02:02:50,162 INFO L78 Accepts]: Start accepts. Automaton has 2436 states and 2848 transitions. Word has length 152 [2020-08-22 02:02:50,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:02:50,165 INFO L479 AbstractCegarLoop]: Abstraction has 2436 states and 2848 transitions. [2020-08-22 02:02:50,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-22 02:02:50,165 INFO L276 IsEmpty]: Start isEmpty. Operand 2436 states and 2848 transitions. [2020-08-22 02:02:50,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-08-22 02:02:50,179 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:02:50,179 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, 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] [2020-08-22 02:02:50,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 02:02:50,180 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:02:50,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:02:50,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1034293868, now seen corresponding path program 1 times [2020-08-22 02:02:50,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:02:50,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1988992649] [2020-08-22 02:02:50,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:02:50,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:50,467 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:02:50,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:02:50,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:50,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:02:50,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:50,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:02:50,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:50,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:02:50,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:50,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:02:50,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:50,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:02:50,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:50,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:02:50,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:50,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 02:02:50,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:50,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 02:02:50,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:50,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:02:50,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:50,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:02:50,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:50,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:02:50,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:50,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:02:50,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:50,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:02:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:50,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 02:02:50,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:50,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:02:50,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:50,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 02:02:50,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:50,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 02:02:50,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:50,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 02:02:50,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:50,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:02:50,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:50,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:02:50,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:50,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:02:50,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:50,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:02:50,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:50,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 02:02:50,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:50,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-22 02:02:50,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:02:50,719 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-08-22 02:02:50,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1988992649] [2020-08-22 02:02:50,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:02:50,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-22 02:02:50,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493766125] [2020-08-22 02:02:50,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 02:02:50,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:02:50,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 02:02:50,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-08-22 02:02:50,722 INFO L87 Difference]: Start difference. First operand 2436 states and 2848 transitions. Second operand 14 states. [2020-08-22 02:02:51,277 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:02:51,555 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:02:51,773 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:02:52,289 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:02:53,722 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189