/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product53.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 16:07:05,003 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 16:07:05,005 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 16:07:05,030 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 16:07:05,030 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 16:07:05,031 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 16:07:05,032 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 16:07:05,034 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 16:07:05,037 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 16:07:05,037 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 16:07:05,038 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 16:07:05,039 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 16:07:05,040 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 16:07:05,041 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 16:07:05,042 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 16:07:05,043 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 16:07:05,043 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 16:07:05,044 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 16:07:05,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 16:07:05,048 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 16:07:05,049 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 16:07:05,050 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 16:07:05,053 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 16:07:05,053 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 16:07:05,057 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 16:07:05,058 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 16:07:05,058 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 16:07:05,061 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 16:07:05,061 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 16:07:05,062 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 16:07:05,062 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 16:07:05,063 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 16:07:05,066 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 16:07:05,067 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 16:07:05,068 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 16:07:05,068 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 16:07:05,069 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 16:07:05,069 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 16:07:05,069 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 16:07:05,072 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 16:07:05,076 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 16:07:05,076 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 16:07:05,121 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 16:07:05,121 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 16:07:05,123 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 16:07:05,123 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 16:07:05,123 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 16:07:05,124 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 16:07:05,124 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 16:07:05,124 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 16:07:05,124 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 16:07:05,124 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 16:07:05,126 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 16:07:05,126 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 16:07:05,126 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 16:07:05,127 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 16:07:05,127 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 16:07:05,128 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 16:07:05,128 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 16:07:05,128 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 16:07:05,128 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 16:07:05,128 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 16:07:05,129 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 16:07:05,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:07:05,129 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 16:07:05,130 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 16:07:05,130 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 16:07:05,130 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 16:07:05,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 16:07:05,130 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 16:07:05,130 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 16:07:05,131 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 [2020-08-18 16:07:05,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 16:07:05,466 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 16:07:05,470 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 16:07:05,472 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 16:07:05,473 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 16:07:05,473 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product53.cil.c [2020-08-18 16:07:05,556 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/39cb96d31/8fc2ae431be945eab59e8b8c5c5c5227/FLAGb0eca335c [2020-08-18 16:07:06,139 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 16:07:06,140 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product53.cil.c [2020-08-18 16:07:06,154 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/39cb96d31/8fc2ae431be945eab59e8b8c5c5c5227/FLAGb0eca335c [2020-08-18 16:07:06,410 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/39cb96d31/8fc2ae431be945eab59e8b8c5c5c5227 [2020-08-18 16:07:06,418 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 16:07:06,420 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 16:07:06,421 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 16:07:06,421 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 16:07:06,424 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 16:07:06,425 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:07:06" (1/1) ... [2020-08-18 16:07:06,428 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62c09893 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:07:06, skipping insertion in model container [2020-08-18 16:07:06,428 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:07:06" (1/1) ... [2020-08-18 16:07:06,436 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 16:07:06,500 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 16:07:06,927 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:07:06,938 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 16:07:07,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:07:07,067 INFO L208 MainTranslator]: Completed translation [2020-08-18 16:07:07,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:07:07 WrapperNode [2020-08-18 16:07:07,068 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 16:07:07,069 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 16:07:07,069 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 16:07:07,069 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 16:07:07,082 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:07:07" (1/1) ... [2020-08-18 16:07:07,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:07:07" (1/1) ... [2020-08-18 16:07:07,102 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:07:07" (1/1) ... [2020-08-18 16:07:07,102 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:07:07" (1/1) ... [2020-08-18 16:07:07,136 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:07:07" (1/1) ... [2020-08-18 16:07:07,147 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:07:07" (1/1) ... [2020-08-18 16:07:07,152 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:07:07" (1/1) ... [2020-08-18 16:07:07,160 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 16:07:07,161 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 16:07:07,161 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 16:07:07,162 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 16:07:07,162 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:07:07" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:07:07,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 16:07:07,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 16:07:07,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 16:07:07,245 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 16:07:07,245 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 16:07:07,245 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 16:07:07,245 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 16:07:07,246 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 16:07:07,246 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 16:07:07,246 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 16:07:07,246 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 16:07:07,246 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 16:07:07,246 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-18 16:07:07,247 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 16:07:07,247 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 16:07:07,247 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 16:07:07,247 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 16:07:07,247 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 16:07:07,248 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 16:07:07,248 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 16:07:07,248 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 16:07:07,248 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 16:07:07,248 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 16:07:07,248 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 16:07:07,248 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 16:07:07,249 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 16:07:07,249 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 16:07:07,249 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 16:07:07,249 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 16:07:07,249 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-18 16:07:07,249 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 16:07:07,250 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 16:07:07,250 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 16:07:07,250 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 16:07:07,250 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 16:07:07,250 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 16:07:07,251 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 16:07:07,251 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 16:07:07,251 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 16:07:07,251 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 16:07:07,251 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 16:07:07,252 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 16:07:07,252 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 16:07:07,252 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 16:07:07,252 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 16:07:07,252 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 16:07:07,252 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 16:07:07,253 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 16:07:07,253 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 16:07:07,253 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 16:07:07,253 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 16:07:07,253 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 16:07:07,253 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 16:07:07,254 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 16:07:07,254 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 16:07:07,254 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 16:07:07,254 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 16:07:07,254 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 16:07:07,255 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 16:07:07,255 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 16:07:07,255 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 16:07:07,255 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 16:07:07,255 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 16:07:07,255 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-18 16:07:07,255 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 16:07:07,256 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 16:07:07,256 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 16:07:07,256 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 16:07:07,256 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 16:07:07,256 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-18 16:07:07,256 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 16:07:07,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 16:07:07,257 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 16:07:07,257 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 16:07:07,257 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 16:07:07,257 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 16:07:07,257 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 16:07:07,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 16:07:07,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 16:07:07,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 16:07:07,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 16:07:07,258 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 16:07:07,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 16:07:07,258 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 16:07:07,259 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 16:07:07,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 16:07:07,259 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 16:07:07,259 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 16:07:07,259 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 16:07:07,259 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 16:07:07,259 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 16:07:07,260 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 16:07:07,260 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 16:07:07,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 16:07:07,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 16:07:07,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 16:07:08,461 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 16:07:08,462 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 16:07:08,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:07:08 BoogieIcfgContainer [2020-08-18 16:07:08,473 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 16:07:08,474 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 16:07:08,474 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 16:07:08,478 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 16:07:08,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 04:07:06" (1/3) ... [2020-08-18 16:07:08,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@769aa581 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:07:08, skipping insertion in model container [2020-08-18 16:07:08,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:07:07" (2/3) ... [2020-08-18 16:07:08,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@769aa581 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:07:08, skipping insertion in model container [2020-08-18 16:07:08,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:07:08" (3/3) ... [2020-08-18 16:07:08,483 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product53.cil.c [2020-08-18 16:07:08,493 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 16:07:08,504 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 16:07:08,518 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 16:07:08,550 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 16:07:08,550 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 16:07:08,551 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 16:07:08,551 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 16:07:08,551 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 16:07:08,551 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 16:07:08,551 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 16:07:08,551 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 16:07:08,571 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states. [2020-08-18 16:07:08,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 16:07:08,583 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:07:08,584 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] [2020-08-18 16:07:08,585 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:07:08,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:07:08,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1930033303, now seen corresponding path program 1 times [2020-08-18 16:07:08,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:07:08,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954469639] [2020-08-18 16:07:08,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:07:08,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:09,305 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:07:09,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:07:09,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:09,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:07:09,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:09,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:07:09,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:09,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:07:09,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:09,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:07:09,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:09,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:07:09,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:09,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:07:09,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:09,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 16:07:09,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:09,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:07:09,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [954469639] [2020-08-18 16:07:09,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:07:09,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 16:07:09,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713857195] [2020-08-18 16:07:09,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 16:07:09,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:07:09,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 16:07:09,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 16:07:09,439 INFO L87 Difference]: Start difference. First operand 192 states. Second operand 3 states. [2020-08-18 16:07:10,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:07:10,720 INFO L93 Difference]: Finished difference Result 341 states and 445 transitions. [2020-08-18 16:07:10,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 16:07:10,722 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-18 16:07:10,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:07:10,747 INFO L225 Difference]: With dead ends: 341 [2020-08-18 16:07:10,748 INFO L226 Difference]: Without dead ends: 183 [2020-08-18 16:07:10,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 16:07:10,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-08-18 16:07:10,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 149. [2020-08-18 16:07:10,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-08-18 16:07:10,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 177 transitions. [2020-08-18 16:07:10,895 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 177 transitions. Word has length 52 [2020-08-18 16:07:10,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:07:10,897 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 177 transitions. [2020-08-18 16:07:10,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 16:07:10,897 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 177 transitions. [2020-08-18 16:07:10,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-18 16:07:10,909 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:07:10,909 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:07:10,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 16:07:10,910 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:07:10,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:07:10,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1692135718, now seen corresponding path program 1 times [2020-08-18 16:07:10,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:07:10,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1717503583] [2020-08-18 16:07:10,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:07:11,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:11,357 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:07:11,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:07:11,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:11,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:07:11,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:11,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:07:11,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:11,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:07:11,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:11,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:07:11,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:11,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 16:07:11,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:11,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 16:07:11,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:11,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 16:07:11,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:11,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:07:11,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1717503583] [2020-08-18 16:07:11,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:07:11,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:07:11,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181821314] [2020-08-18 16:07:11,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:07:11,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:07:11,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:07:11,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:07:11,407 INFO L87 Difference]: Start difference. First operand 149 states and 177 transitions. Second operand 4 states. [2020-08-18 16:07:11,852 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:07:12,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:07:12,803 INFO L93 Difference]: Finished difference Result 274 states and 336 transitions. [2020-08-18 16:07:12,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 16:07:12,804 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-18 16:07:12,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:07:12,809 INFO L225 Difference]: With dead ends: 274 [2020-08-18 16:07:12,809 INFO L226 Difference]: Without dead ends: 167 [2020-08-18 16:07:12,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:07:12,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-08-18 16:07:12,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 140. [2020-08-18 16:07:12,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-08-18 16:07:12,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 165 transitions. [2020-08-18 16:07:12,874 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 165 transitions. Word has length 53 [2020-08-18 16:07:12,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:07:12,874 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 165 transitions. [2020-08-18 16:07:12,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:07:12,875 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 165 transitions. [2020-08-18 16:07:12,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 16:07:12,877 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:07:12,877 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] [2020-08-18 16:07:12,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 16:07:12,877 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:07:12,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:07:12,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1292389066, now seen corresponding path program 1 times [2020-08-18 16:07:12,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:07:12,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [619128524] [2020-08-18 16:07:12,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:07:12,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:13,238 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:07:13,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:07:13,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:13,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:07:13,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:13,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:07:13,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:13,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:07:13,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:13,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:07:13,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:13,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:07:13,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:13,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:07:13,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:13,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 16:07:13,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:13,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:07:13,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [619128524] [2020-08-18 16:07:13,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:07:13,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 16:07:13,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548625728] [2020-08-18 16:07:13,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 16:07:13,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:07:13,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 16:07:13,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 16:07:13,367 INFO L87 Difference]: Start difference. First operand 140 states and 165 transitions. Second operand 8 states. [2020-08-18 16:07:13,729 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:07:14,064 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:07:14,305 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:07:14,531 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:07:15,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:07:15,897 INFO L93 Difference]: Finished difference Result 283 states and 350 transitions. [2020-08-18 16:07:15,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 16:07:15,898 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-18 16:07:15,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:07:15,901 INFO L225 Difference]: With dead ends: 283 [2020-08-18 16:07:15,902 INFO L226 Difference]: Without dead ends: 167 [2020-08-18 16:07:15,903 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:07:15,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-08-18 16:07:15,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 140. [2020-08-18 16:07:15,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-08-18 16:07:15,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 164 transitions. [2020-08-18 16:07:15,944 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 164 transitions. Word has length 57 [2020-08-18 16:07:15,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:07:15,944 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 164 transitions. [2020-08-18 16:07:15,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 16:07:15,945 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 164 transitions. [2020-08-18 16:07:15,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-18 16:07:15,947 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:07:15,947 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] [2020-08-18 16:07:15,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 16:07:15,948 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:07:15,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:07:15,948 INFO L82 PathProgramCache]: Analyzing trace with hash 875217030, now seen corresponding path program 1 times [2020-08-18 16:07:15,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:07:15,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [313925732] [2020-08-18 16:07:15,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:07:15,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:16,287 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:07:16,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:07:16,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:16,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:07:16,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:16,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:07:16,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:16,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:07:16,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:16,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:07:16,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:16,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 16:07:16,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:16,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:16,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:16,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:16,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:16,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:16,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:16,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 16:07:16,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:16,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 16:07:16,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:16,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-18 16:07:16,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:16,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:07:16,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [313925732] [2020-08-18 16:07:16,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:07:16,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 16:07:16,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175230546] [2020-08-18 16:07:16,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 16:07:16,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:07:16,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 16:07:16,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 16:07:16,395 INFO L87 Difference]: Start difference. First operand 140 states and 164 transitions. Second operand 6 states. [2020-08-18 16:07:16,739 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:07:17,990 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:07:18,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:07:18,758 INFO L93 Difference]: Finished difference Result 393 states and 487 transitions. [2020-08-18 16:07:18,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 16:07:18,761 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2020-08-18 16:07:18,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:07:18,764 INFO L225 Difference]: With dead ends: 393 [2020-08-18 16:07:18,764 INFO L226 Difference]: Without dead ends: 277 [2020-08-18 16:07:18,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-18 16:07:18,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-08-18 16:07:18,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 236. [2020-08-18 16:07:18,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-08-18 16:07:18,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 269 transitions. [2020-08-18 16:07:18,817 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 269 transitions. Word has length 75 [2020-08-18 16:07:18,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:07:18,817 INFO L479 AbstractCegarLoop]: Abstraction has 236 states and 269 transitions. [2020-08-18 16:07:18,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 16:07:18,818 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 269 transitions. [2020-08-18 16:07:18,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-18 16:07:18,819 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:07:18,819 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] [2020-08-18 16:07:18,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 16:07:18,820 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:07:18,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:07:18,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1332654256, now seen corresponding path program 1 times [2020-08-18 16:07:18,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:07:18,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1089998046] [2020-08-18 16:07:18,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:07:18,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:19,128 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:07:19,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:07:19,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:19,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:07:19,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:19,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:07:19,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:19,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:07:19,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:19,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:07:19,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:19,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 16:07:19,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:19,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:19,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:19,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:19,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:19,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:19,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:19,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:07:19,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:19,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:07:19,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:19,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 16:07:19,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:19,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 16:07:19,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:19,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 16:07:19,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:19,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:07:19,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1089998046] [2020-08-18 16:07:19,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:07:19,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 16:07:19,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241159147] [2020-08-18 16:07:19,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 16:07:19,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:07:19,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 16:07:19,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 16:07:19,236 INFO L87 Difference]: Start difference. First operand 236 states and 269 transitions. Second operand 8 states. [2020-08-18 16:07:19,627 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:07:20,928 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:07:21,226 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:07:21,481 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:07:21,732 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:07:22,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:07:22,651 INFO L93 Difference]: Finished difference Result 614 states and 761 transitions. [2020-08-18 16:07:22,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 16:07:22,652 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 89 [2020-08-18 16:07:22,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:07:22,655 INFO L225 Difference]: With dead ends: 614 [2020-08-18 16:07:22,655 INFO L226 Difference]: Without dead ends: 402 [2020-08-18 16:07:22,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-18 16:07:22,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2020-08-18 16:07:22,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 362. [2020-08-18 16:07:22,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 362 states. [2020-08-18 16:07:22,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 420 transitions. [2020-08-18 16:07:22,739 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 420 transitions. Word has length 89 [2020-08-18 16:07:22,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:07:22,740 INFO L479 AbstractCegarLoop]: Abstraction has 362 states and 420 transitions. [2020-08-18 16:07:22,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 16:07:22,740 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 420 transitions. [2020-08-18 16:07:22,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 16:07:22,742 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:07:22,742 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] [2020-08-18 16:07:22,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 16:07:22,742 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:07:22,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:07:22,743 INFO L82 PathProgramCache]: Analyzing trace with hash -920967306, now seen corresponding path program 1 times [2020-08-18 16:07:22,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:07:22,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [43126458] [2020-08-18 16:07:22,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:07:22,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:22,994 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:07:22,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:07:23,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:23,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:07:23,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:23,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:07:23,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:23,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:07:23,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:23,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:07:23,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:23,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 16:07:23,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:23,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 16:07:23,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:23,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:23,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:23,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:23,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:23,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:23,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:23,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:07:23,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:23,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:07:23,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:23,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 16:07:23,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:23,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 16:07:23,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:23,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 16:07:23,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:23,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:07:23,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [43126458] [2020-08-18 16:07:23,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:07:23,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:07:23,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502478641] [2020-08-18 16:07:23,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:07:23,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:07:23,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:07:23,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:07:23,175 INFO L87 Difference]: Start difference. First operand 362 states and 420 transitions. Second operand 9 states. [2020-08-18 16:07:23,658 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:07:24,178 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:07:25,682 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:07:27,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:07:27,748 INFO L93 Difference]: Finished difference Result 935 states and 1195 transitions. [2020-08-18 16:07:27,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 16:07:27,749 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-18 16:07:27,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:07:27,754 INFO L225 Difference]: With dead ends: 935 [2020-08-18 16:07:27,754 INFO L226 Difference]: Without dead ends: 712 [2020-08-18 16:07:27,755 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-08-18 16:07:27,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2020-08-18 16:07:27,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 646. [2020-08-18 16:07:27,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 646 states. [2020-08-18 16:07:27,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 781 transitions. [2020-08-18 16:07:27,879 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 781 transitions. Word has length 93 [2020-08-18 16:07:27,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:07:27,880 INFO L479 AbstractCegarLoop]: Abstraction has 646 states and 781 transitions. [2020-08-18 16:07:27,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:07:27,880 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 781 transitions. [2020-08-18 16:07:27,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 16:07:27,882 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:07:27,882 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] [2020-08-18 16:07:27,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 16:07:27,883 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:07:27,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:07:27,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1438339703, now seen corresponding path program 1 times [2020-08-18 16:07:27,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:07:27,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1316580744] [2020-08-18 16:07:27,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:07:27,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:28,133 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:07:28,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:07:28,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:28,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:07:28,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:28,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:07:28,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:28,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:07:28,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:28,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:07:28,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:28,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 16:07:28,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:28,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 16:07:28,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:28,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:28,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:28,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:28,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:28,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:28,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:28,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:07:28,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:28,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:07:28,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:28,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 16:07:28,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:28,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 16:07:28,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:28,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 16:07:28,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:28,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:07:28,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1316580744] [2020-08-18 16:07:28,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:07:28,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 16:07:28,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782700665] [2020-08-18 16:07:28,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 16:07:28,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:07:28,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 16:07:28,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-18 16:07:28,276 INFO L87 Difference]: Start difference. First operand 646 states and 781 transitions. Second operand 8 states. [2020-08-18 16:07:29,122 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:07:29,336 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:07:29,573 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:07:30,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:07:30,776 INFO L93 Difference]: Finished difference Result 1191 states and 1490 transitions. [2020-08-18 16:07:30,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 16:07:30,777 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-08-18 16:07:30,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:07:30,783 INFO L225 Difference]: With dead ends: 1191 [2020-08-18 16:07:30,784 INFO L226 Difference]: Without dead ends: 688 [2020-08-18 16:07:30,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:07:30,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2020-08-18 16:07:30,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 646. [2020-08-18 16:07:30,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 646 states. [2020-08-18 16:07:30,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 780 transitions. [2020-08-18 16:07:30,931 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 780 transitions. Word has length 93 [2020-08-18 16:07:30,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:07:30,932 INFO L479 AbstractCegarLoop]: Abstraction has 646 states and 780 transitions. [2020-08-18 16:07:30,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 16:07:30,932 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 780 transitions. [2020-08-18 16:07:30,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 16:07:30,935 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:07:30,936 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] [2020-08-18 16:07:30,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 16:07:30,936 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:07:30,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:07:30,937 INFO L82 PathProgramCache]: Analyzing trace with hash 2097871225, now seen corresponding path program 1 times [2020-08-18 16:07:30,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:07:30,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447652234] [2020-08-18 16:07:30,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:07:30,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:31,192 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:07:31,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:07:31,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:31,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:07:31,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:31,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:07:31,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:31,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:07:31,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:31,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:07:31,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:31,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 16:07:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:31,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 16:07:31,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:31,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:31,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:31,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:31,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:31,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:31,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:31,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:07:31,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:31,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:07:31,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:31,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 16:07:31,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:31,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 16:07:31,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:31,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 16:07:31,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:31,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:07:31,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447652234] [2020-08-18 16:07:31,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:07:31,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 16:07:31,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717524941] [2020-08-18 16:07:31,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 16:07:31,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:07:31,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 16:07:31,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:07:31,343 INFO L87 Difference]: Start difference. First operand 646 states and 780 transitions. Second operand 12 states. [2020-08-18 16:07:31,918 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:07:32,150 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:07:32,372 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:07:33,097 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:07:33,331 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:07:33,591 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:07:33,824 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:07:35,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:07:35,274 INFO L93 Difference]: Finished difference Result 1270 states and 1579 transitions. [2020-08-18 16:07:35,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 16:07:35,275 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 93 [2020-08-18 16:07:35,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:07:35,283 INFO L225 Difference]: With dead ends: 1270 [2020-08-18 16:07:35,283 INFO L226 Difference]: Without dead ends: 648 [2020-08-18 16:07:35,285 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-18 16:07:35,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2020-08-18 16:07:35,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 617. [2020-08-18 16:07:35,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-18 16:07:35,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 740 transitions. [2020-08-18 16:07:35,403 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 740 transitions. Word has length 93 [2020-08-18 16:07:35,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:07:35,403 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 740 transitions. [2020-08-18 16:07:35,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 16:07:35,404 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 740 transitions. [2020-08-18 16:07:35,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-18 16:07:35,408 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:07:35,408 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, 1] [2020-08-18 16:07:35,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 16:07:35,409 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:07:35,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:07:35,409 INFO L82 PathProgramCache]: Analyzing trace with hash 791892564, now seen corresponding path program 1 times [2020-08-18 16:07:35,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:07:35,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [613086102] [2020-08-18 16:07:35,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:07:35,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:35,811 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:07:35,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:07:35,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:35,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:07:35,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:35,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:07:35,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:35,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:07:35,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:35,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:07:35,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:35,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 16:07:35,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:35,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 16:07:35,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:35,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:35,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:35,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:35,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:35,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:35,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:35,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:07:35,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:35,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:07:35,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:35,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 16:07:35,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:35,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 16:07:35,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:35,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 16:07:35,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:36,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:07:36,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [613086102] [2020-08-18 16:07:36,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:07:36,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-18 16:07:36,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936245205] [2020-08-18 16:07:36,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 16:07:36,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:07:36,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 16:07:36,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-08-18 16:07:36,012 INFO L87 Difference]: Start difference. First operand 617 states and 740 transitions. Second operand 13 states. [2020-08-18 16:07:36,625 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:07:36,876 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:07:37,125 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:07:38,108 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:07:38,732 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:07:39,030 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:07:39,307 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:07:40,029 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:07:40,347 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:07:40,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:07:40,769 INFO L93 Difference]: Finished difference Result 1241 states and 1503 transitions. [2020-08-18 16:07:40,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-18 16:07:40,770 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 94 [2020-08-18 16:07:40,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:07:40,778 INFO L225 Difference]: With dead ends: 1241 [2020-08-18 16:07:40,779 INFO L226 Difference]: Without dead ends: 648 [2020-08-18 16:07:40,781 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2020-08-18 16:07:40,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2020-08-18 16:07:40,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 617. [2020-08-18 16:07:40,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-18 16:07:40,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 724 transitions. [2020-08-18 16:07:40,896 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 724 transitions. Word has length 94 [2020-08-18 16:07:40,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:07:40,897 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 724 transitions. [2020-08-18 16:07:40,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 16:07:40,898 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 724 transitions. [2020-08-18 16:07:40,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-08-18 16:07:40,901 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:07:40,904 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:07:40,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 16:07:40,905 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:07:40,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:07:40,905 INFO L82 PathProgramCache]: Analyzing trace with hash -361137762, now seen corresponding path program 1 times [2020-08-18 16:07:40,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:07:40,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013776519] [2020-08-18 16:07:40,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:07:40,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:41,150 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:07:41,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:07:41,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:41,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:07:41,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:41,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:07:41,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:41,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:07:41,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:41,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:07:41,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:41,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:07:41,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:41,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:41,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:41,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:41,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:41,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:41,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:41,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:41,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:41,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:07:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:41,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:07:41,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:41,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 16:07:41,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:41,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:07:41,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:41,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 16:07:41,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:41,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 16:07:41,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:41,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:41,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:41,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:07:41,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:41,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 16:07:41,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:41,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-18 16:07:41,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:41,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-18 16:07:41,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:41,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 16:07:41,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:41,321 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-18 16:07:41,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013776519] [2020-08-18 16:07:41,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:07:41,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 16:07:41,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250855058] [2020-08-18 16:07:41,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 16:07:41,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:07:41,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 16:07:41,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 16:07:41,324 INFO L87 Difference]: Start difference. First operand 617 states and 724 transitions. Second operand 10 states. [2020-08-18 16:07:42,590 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:07:42,832 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:07:43,085 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:07:43,323 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:07:44,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:07:44,320 INFO L93 Difference]: Finished difference Result 1154 states and 1382 transitions. [2020-08-18 16:07:44,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 16:07:44,325 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 137 [2020-08-18 16:07:44,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:07:44,329 INFO L225 Difference]: With dead ends: 1154 [2020-08-18 16:07:44,330 INFO L226 Difference]: Without dead ends: 636 [2020-08-18 16:07:44,332 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 16:07:44,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2020-08-18 16:07:44,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 617. [2020-08-18 16:07:44,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-18 16:07:44,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 722 transitions. [2020-08-18 16:07:44,465 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 722 transitions. Word has length 137 [2020-08-18 16:07:44,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:07:44,465 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 722 transitions. [2020-08-18 16:07:44,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 16:07:44,465 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 722 transitions. [2020-08-18 16:07:44,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-08-18 16:07:44,468 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:07:44,468 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:07:44,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 16:07:44,469 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:07:44,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:07:44,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1515345056, now seen corresponding path program 1 times [2020-08-18 16:07:44,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:07:44,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1994833005] [2020-08-18 16:07:44,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:07:44,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:44,805 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:07:44,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:07:44,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:44,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:07:44,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:44,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:07:44,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:44,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:07:44,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:44,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:07:44,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:44,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:07:44,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:44,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:44,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:44,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:44,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:44,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:44,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:44,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:44,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:44,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:07:44,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:44,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:07:44,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:44,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 16:07:44,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:44,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:07:44,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:44,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 16:07:44,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:44,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 16:07:44,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:44,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:44,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:44,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:07:44,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:44,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 16:07:44,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:44,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-18 16:07:44,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:45,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-18 16:07:45,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:45,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 16:07:45,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:45,051 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-18 16:07:45,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1994833005] [2020-08-18 16:07:45,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:07:45,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 16:07:45,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503893089] [2020-08-18 16:07:45,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 16:07:45,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:07:45,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 16:07:45,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:07:45,055 INFO L87 Difference]: Start difference. First operand 617 states and 722 transitions. Second operand 12 states. [2020-08-18 16:07:45,894 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:07:46,214 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:07:46,444 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:07:47,029 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:07:47,290 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:07:47,514 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:07:48,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:07:48,639 INFO L93 Difference]: Finished difference Result 1066 states and 1276 transitions. [2020-08-18 16:07:48,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 16:07:48,640 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 137 [2020-08-18 16:07:48,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:07:48,643 INFO L225 Difference]: With dead ends: 1066 [2020-08-18 16:07:48,643 INFO L226 Difference]: Without dead ends: 543 [2020-08-18 16:07:48,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 16:07:48,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2020-08-18 16:07:48,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 524. [2020-08-18 16:07:48,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2020-08-18 16:07:48,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 611 transitions. [2020-08-18 16:07:48,745 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 611 transitions. Word has length 137 [2020-08-18 16:07:48,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:07:48,746 INFO L479 AbstractCegarLoop]: Abstraction has 524 states and 611 transitions. [2020-08-18 16:07:48,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 16:07:48,747 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 611 transitions. [2020-08-18 16:07:48,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-08-18 16:07:48,750 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:07:48,750 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:07:48,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 16:07:48,751 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:07:48,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:07:48,751 INFO L82 PathProgramCache]: Analyzing trace with hash -834613817, now seen corresponding path program 1 times [2020-08-18 16:07:48,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:07:48,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1480338428] [2020-08-18 16:07:48,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:07:48,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:49,074 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:07:49,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:07:49,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:49,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:07:49,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:49,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:07:49,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:49,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:07:49,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:49,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:07:49,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:49,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 16:07:49,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:49,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 16:07:49,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:49,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:49,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:49,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:49,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:49,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:49,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:49,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:49,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:49,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:07:49,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:49,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:07:49,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:49,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 16:07:49,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:49,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:07:49,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:49,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 16:07:49,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:49,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 16:07:49,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:49,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:49,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:49,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:07:49,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:49,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 16:07:49,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:49,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-18 16:07:49,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:49,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-18 16:07:49,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:49,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-18 16:07:49,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:49,299 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-08-18 16:07:49,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1480338428] [2020-08-18 16:07:49,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:07:49,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 16:07:49,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069486952] [2020-08-18 16:07:49,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 16:07:49,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:07:49,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 16:07:49,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-18 16:07:49,307 INFO L87 Difference]: Start difference. First operand 524 states and 611 transitions. Second operand 11 states. [2020-08-18 16:07:49,752 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:07:50,304 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:07:51,184 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:07:51,676 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-08-18 16:07:52,141 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-08-18 16:07:52,364 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:07:53,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:07:53,930 INFO L93 Difference]: Finished difference Result 1550 states and 1871 transitions. [2020-08-18 16:07:53,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 16:07:53,930 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 141 [2020-08-18 16:07:53,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:07:53,936 INFO L225 Difference]: With dead ends: 1550 [2020-08-18 16:07:53,936 INFO L226 Difference]: Without dead ends: 1050 [2020-08-18 16:07:53,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2020-08-18 16:07:53,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2020-08-18 16:07:54,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 1021. [2020-08-18 16:07:54,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1021 states. [2020-08-18 16:07:54,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 1176 transitions. [2020-08-18 16:07:54,119 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 1176 transitions. Word has length 141 [2020-08-18 16:07:54,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:07:54,120 INFO L479 AbstractCegarLoop]: Abstraction has 1021 states and 1176 transitions. [2020-08-18 16:07:54,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 16:07:54,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 1176 transitions. [2020-08-18 16:07:54,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-08-18 16:07:54,123 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:07:54,123 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:07:54,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 16:07:54,124 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:07:54,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:07:54,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1626419797, now seen corresponding path program 1 times [2020-08-18 16:07:54,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:07:54,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [323580309] [2020-08-18 16:07:54,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:07:54,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:54,416 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:07:54,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:07:54,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:54,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:07:54,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:54,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:07:54,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:54,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:07:54,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:54,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:07:54,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:54,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 16:07:54,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:54,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 16:07:54,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:54,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:07:54,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:54,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:54,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:54,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:54,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:54,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:54,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:54,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:54,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:54,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:07:54,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:54,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:07:54,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:54,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 16:07:54,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:54,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:07:54,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:54,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 16:07:54,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:54,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-18 16:07:54,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:54,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:07:54,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:54,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:07:54,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:54,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 16:07:54,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:54,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-18 16:07:54,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:54,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-18 16:07:54,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:54,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-18 16:07:54,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:07:54,606 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-18 16:07:54,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [323580309] [2020-08-18 16:07:54,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:07:54,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 16:07:54,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614382678] [2020-08-18 16:07:54,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 16:07:54,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:07:54,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 16:07:54,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-18 16:07:54,610 INFO L87 Difference]: Start difference. First operand 1021 states and 1176 transitions. Second operand 15 states. [2020-08-18 16:07:55,255 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:07:55,504 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:07:55,737 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:07:56,293 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:07:57,342 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:07:57,677 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:07:57,947 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:07:58,196 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:08:00,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:08:00,154 INFO L93 Difference]: Finished difference Result 2052 states and 2452 transitions. [2020-08-18 16:08:00,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 16:08:00,155 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 145 [2020-08-18 16:08:00,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:08:00,161 INFO L225 Difference]: With dead ends: 2052 [2020-08-18 16:08:00,161 INFO L226 Difference]: Without dead ends: 1055 [2020-08-18 16:08:00,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=190, Invalid=680, Unknown=0, NotChecked=0, Total=870 [2020-08-18 16:08:00,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2020-08-18 16:08:00,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 955. [2020-08-18 16:08:00,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 955 states. [2020-08-18 16:08:00,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 955 states to 955 states and 1097 transitions. [2020-08-18 16:08:00,327 INFO L78 Accepts]: Start accepts. Automaton has 955 states and 1097 transitions. Word has length 145 [2020-08-18 16:08:00,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:08:00,328 INFO L479 AbstractCegarLoop]: Abstraction has 955 states and 1097 transitions. [2020-08-18 16:08:00,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 16:08:00,328 INFO L276 IsEmpty]: Start isEmpty. Operand 955 states and 1097 transitions. [2020-08-18 16:08:00,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-18 16:08:00,331 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:08:00,331 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:08:00,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-18 16:08:00,331 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:08:00,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:08:00,332 INFO L82 PathProgramCache]: Analyzing trace with hash -248365737, now seen corresponding path program 1 times [2020-08-18 16:08:00,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:08:00,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1957048682] [2020-08-18 16:08:00,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:08:00,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:00,572 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:08:00,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:08:00,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:00,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:08:00,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:00,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:08:00,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:00,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:08:00,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:00,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:08:00,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:00,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 16:08:00,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:00,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 16:08:00,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:00,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:08:00,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:00,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:08:00,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:00,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:08:00,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:00,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:08:00,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:00,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:08:00,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:00,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:08:00,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:00,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 16:08:00,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:00,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:08:00,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:00,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 16:08:00,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:00,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 16:08:00,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:00,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 16:08:00,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:00,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:08:00,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:00,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:08:00,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:00,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 16:08:00,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:00,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-18 16:08:00,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:00,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-18 16:08:00,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:00,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-18 16:08:00,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:00,818 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-08-18 16:08:00,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1957048682] [2020-08-18 16:08:00,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:08:00,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 16:08:00,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499200111] [2020-08-18 16:08:00,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 16:08:00,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:08:00,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 16:08:00,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-18 16:08:00,820 INFO L87 Difference]: Start difference. First operand 955 states and 1097 transitions. Second operand 15 states. [2020-08-18 16:08:01,382 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:08:02,074 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:08:03,111 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:08:03,444 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:08:03,929 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2020-08-18 16:08:04,409 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189