/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product54.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 20:56:58,953 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 20:56:58,956 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 20:56:58,981 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 20:56:58,982 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 20:56:58,983 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 20:56:58,984 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 20:56:58,986 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 20:56:58,988 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 20:56:58,989 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 20:56:58,990 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 20:56:58,994 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 20:56:58,994 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 20:56:58,995 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 20:56:58,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 20:56:58,997 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 20:56:58,998 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 20:56:59,002 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 20:56:59,004 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 20:56:59,005 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 20:56:59,007 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 20:56:59,008 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 20:56:59,009 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 20:56:59,010 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 20:56:59,012 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 20:56:59,012 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 20:56:59,012 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 20:56:59,013 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 20:56:59,014 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 20:56:59,015 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 20:56:59,015 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 20:56:59,016 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 20:56:59,016 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 20:56:59,017 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 20:56:59,018 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 20:56:59,018 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 20:56:59,019 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 20:56:59,019 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 20:56:59,019 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 20:56:59,020 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 20:56:59,021 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 20:56:59,022 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 20:56:59,045 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 20:56:59,045 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 20:56:59,046 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 20:56:59,047 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 20:56:59,047 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 20:56:59,047 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 20:56:59,047 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 20:56:59,048 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 20:56:59,048 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 20:56:59,048 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 20:56:59,048 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 20:56:59,048 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 20:56:59,049 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 20:56:59,049 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 20:56:59,049 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 20:56:59,049 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 20:56:59,049 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 20:56:59,050 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 20:56:59,050 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 20:56:59,050 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 20:56:59,050 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 20:56:59,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:56:59,051 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 20:56:59,051 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 20:56:59,051 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 20:56:59,051 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 20:56:59,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 20:56:59,052 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 20:56:59,052 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 20:56:59,052 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=DEEPEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=DEEPEST; [2020-08-18 20:56:59,372 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 20:56:59,393 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 20:56:59,399 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 20:56:59,401 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 20:56:59,402 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 20:56:59,403 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product54.cil.c [2020-08-18 20:56:59,475 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/18d65cb03/bff1331128b8441a8843d67ec03a3c34/FLAG1262f0d9c [2020-08-18 20:57:00,009 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 20:57:00,010 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product54.cil.c [2020-08-18 20:57:00,023 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/18d65cb03/bff1331128b8441a8843d67ec03a3c34/FLAG1262f0d9c [2020-08-18 20:57:00,358 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/18d65cb03/bff1331128b8441a8843d67ec03a3c34 [2020-08-18 20:57:00,367 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 20:57:00,368 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 20:57:00,370 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 20:57:00,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 20:57:00,373 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 20:57:00,374 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:57:00" (1/1) ... [2020-08-18 20:57:00,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a00abf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:57:00, skipping insertion in model container [2020-08-18 20:57:00,378 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:57:00" (1/1) ... [2020-08-18 20:57:00,386 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 20:57:00,431 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 20:57:00,904 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:57:00,929 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 20:57:01,075 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:57:01,129 INFO L208 MainTranslator]: Completed translation [2020-08-18 20:57:01,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:57:01 WrapperNode [2020-08-18 20:57:01,130 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 20:57:01,131 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 20:57:01,131 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 20:57:01,131 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 20:57:01,145 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:57:01" (1/1) ... [2020-08-18 20:57:01,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:57:01" (1/1) ... [2020-08-18 20:57:01,181 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:57:01" (1/1) ... [2020-08-18 20:57:01,187 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:57:01" (1/1) ... [2020-08-18 20:57:01,244 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:57:01" (1/1) ... [2020-08-18 20:57:01,261 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:57:01" (1/1) ... [2020-08-18 20:57:01,269 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:57:01" (1/1) ... [2020-08-18 20:57:01,282 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 20:57:01,283 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 20:57:01,283 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 20:57:01,283 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 20:57:01,285 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:57:01" (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 20:57:01,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 20:57:01,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 20:57:01,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 20:57:01,356 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 20:57:01,357 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 20:57:01,357 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 20:57:01,357 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 20:57:01,358 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 20:57:01,358 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 20:57:01,358 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 20:57:01,359 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 20:57:01,359 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 20:57:01,359 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 20:57:01,359 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 20:57:01,359 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 20:57:01,359 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 20:57:01,360 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 20:57:01,363 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-18 20:57:01,363 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 20:57:01,363 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 20:57:01,363 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 20:57:01,363 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 20:57:01,364 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 20:57:01,364 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 20:57:01,364 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 20:57:01,364 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 20:57:01,364 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 20:57:01,364 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 20:57:01,365 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 20:57:01,366 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 20:57:01,366 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 20:57:01,366 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 20:57:01,367 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-18 20:57:01,367 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 20:57:01,367 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 20:57:01,367 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 20:57:01,367 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 20:57:01,367 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 20:57:01,368 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 20:57:01,368 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 20:57:01,368 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 20:57:01,368 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 20:57:01,368 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 20:57:01,368 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 20:57:01,368 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 20:57:01,369 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 20:57:01,369 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 20:57:01,369 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 20:57:01,369 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 20:57:01,369 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 20:57:01,369 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 20:57:01,371 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 20:57:01,371 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 20:57:01,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 20:57:01,372 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 20:57:01,372 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 20:57:01,372 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 20:57:01,373 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 20:57:01,373 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 20:57:01,373 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 20:57:01,373 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 20:57:01,373 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 20:57:01,373 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 20:57:01,374 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 20:57:01,374 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 20:57:01,374 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 20:57:01,374 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 20:57:01,375 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-18 20:57:01,375 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 20:57:01,375 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 20:57:01,375 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 20:57:01,375 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 20:57:01,376 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 20:57:01,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 20:57:01,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 20:57:01,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 20:57:01,378 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 20:57:01,379 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 20:57:01,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 20:57:01,379 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 20:57:01,379 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 20:57:01,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 20:57:01,380 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 20:57:01,381 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 20:57:01,381 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 20:57:01,381 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 20:57:01,381 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 20:57:01,381 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 20:57:01,381 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 20:57:01,381 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 20:57:01,382 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 20:57:01,382 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 20:57:01,382 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 20:57:01,382 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-18 20:57:01,382 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 20:57:01,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 20:57:01,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 20:57:01,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 20:57:02,538 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 20:57:02,538 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 20:57:02,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:57:02 BoogieIcfgContainer [2020-08-18 20:57:02,544 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 20:57:02,545 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 20:57:02,545 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 20:57:02,548 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 20:57:02,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 08:57:00" (1/3) ... [2020-08-18 20:57:02,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d674c20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:57:02, skipping insertion in model container [2020-08-18 20:57:02,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:57:01" (2/3) ... [2020-08-18 20:57:02,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d674c20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:57:02, skipping insertion in model container [2020-08-18 20:57:02,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:57:02" (3/3) ... [2020-08-18 20:57:02,552 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product54.cil.c [2020-08-18 20:57:02,563 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 20:57:02,571 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 20:57:02,585 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 20:57:02,610 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 20:57:02,610 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 20:57:02,611 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 20:57:02,611 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 20:57:02,611 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 20:57:02,611 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 20:57:02,611 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 20:57:02,611 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 20:57:02,638 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states. [2020-08-18 20:57:02,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 20:57:02,652 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:57:02,654 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 20:57:02,654 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:57:02,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:57:02,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1727770094, now seen corresponding path program 1 times [2020-08-18 20:57:02,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:57:02,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [20654238] [2020-08-18 20:57:02,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:57:02,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:03,361 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:57:03,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:57:03,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:03,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:57:03,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:03,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:57:03,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:03,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:57:03,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:03,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:57:03,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:03,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:57:03,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:03,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:57:03,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:03,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 20:57:03,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:03,451 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 20:57:03,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [20654238] [2020-08-18 20:57:03,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:57:03,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 20:57:03,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706975810] [2020-08-18 20:57:03,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 20:57:03,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:57:03,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 20:57:03,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 20:57:03,478 INFO L87 Difference]: Start difference. First operand 196 states. Second operand 3 states. [2020-08-18 20:57:04,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:57:04,801 INFO L93 Difference]: Finished difference Result 350 states and 455 transitions. [2020-08-18 20:57:04,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 20:57:04,803 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-18 20:57:04,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:57:04,819 INFO L225 Difference]: With dead ends: 350 [2020-08-18 20:57:04,820 INFO L226 Difference]: Without dead ends: 188 [2020-08-18 20:57:04,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 20:57:04,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-08-18 20:57:04,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 153. [2020-08-18 20:57:04,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-08-18 20:57:04,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 181 transitions. [2020-08-18 20:57:04,927 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 181 transitions. Word has length 52 [2020-08-18 20:57:04,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:57:04,927 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 181 transitions. [2020-08-18 20:57:04,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 20:57:04,928 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 181 transitions. [2020-08-18 20:57:04,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-18 20:57:04,931 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:57:04,932 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 20:57:04,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 20:57:04,932 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:57:04,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:57:04,933 INFO L82 PathProgramCache]: Analyzing trace with hash -23295260, now seen corresponding path program 1 times [2020-08-18 20:57:04,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:57:04,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011461839] [2020-08-18 20:57:04,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:57:05,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:05,331 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:57:05,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:57:05,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:05,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:57:05,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:05,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:57:05,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:05,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:57:05,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:05,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:57:05,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:05,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 20:57:05,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:05,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 20:57:05,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:05,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 20:57:05,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:05,376 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 20:57:05,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011461839] [2020-08-18 20:57:05,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:57:05,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 20:57:05,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23916552] [2020-08-18 20:57:05,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 20:57:05,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:57:05,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 20:57:05,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 20:57:05,380 INFO L87 Difference]: Start difference. First operand 153 states and 181 transitions. Second operand 4 states. [2020-08-18 20:57:05,773 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:57:06,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:57:06,862 INFO L93 Difference]: Finished difference Result 279 states and 342 transitions. [2020-08-18 20:57:06,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 20:57:06,862 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-18 20:57:06,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:57:06,867 INFO L225 Difference]: With dead ends: 279 [2020-08-18 20:57:06,868 INFO L226 Difference]: Without dead ends: 172 [2020-08-18 20:57:06,873 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:57:06,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-08-18 20:57:06,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 144. [2020-08-18 20:57:06,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-08-18 20:57:06,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 169 transitions. [2020-08-18 20:57:06,942 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 169 transitions. Word has length 53 [2020-08-18 20:57:06,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:57:06,942 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 169 transitions. [2020-08-18 20:57:06,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 20:57:06,943 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 169 transitions. [2020-08-18 20:57:06,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-18 20:57:06,945 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:57:06,945 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] [2020-08-18 20:57:06,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 20:57:06,946 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:57:06,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:57:06,946 INFO L82 PathProgramCache]: Analyzing trace with hash 646991369, now seen corresponding path program 1 times [2020-08-18 20:57:06,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:57:06,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [596277788] [2020-08-18 20:57:06,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:57:06,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:07,272 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:57:07,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:57:07,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:07,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:57:07,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:07,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:57:07,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:07,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:57:07,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:07,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:57:07,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:07,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:57:07,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:07,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 20:57:07,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:07,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 20:57:07,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:07,363 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 20:57:07,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [596277788] [2020-08-18 20:57:07,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:57:07,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 20:57:07,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840297942] [2020-08-18 20:57:07,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 20:57:07,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:57:07,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 20:57:07,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 20:57:07,366 INFO L87 Difference]: Start difference. First operand 144 states and 169 transitions. Second operand 8 states. [2020-08-18 20:57:07,702 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:57:08,013 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:57:08,272 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:57:08,514 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:57:09,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:57:09,949 INFO L93 Difference]: Finished difference Result 292 states and 360 transitions. [2020-08-18 20:57:09,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 20:57:09,950 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-18 20:57:09,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:57:09,953 INFO L225 Difference]: With dead ends: 292 [2020-08-18 20:57:09,953 INFO L226 Difference]: Without dead ends: 172 [2020-08-18 20:57:09,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 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 20:57:09,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-08-18 20:57:09,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 144. [2020-08-18 20:57:09,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-08-18 20:57:09,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 168 transitions. [2020-08-18 20:57:09,994 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 168 transitions. Word has length 58 [2020-08-18 20:57:09,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:57:09,994 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 168 transitions. [2020-08-18 20:57:09,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 20:57:09,995 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 168 transitions. [2020-08-18 20:57:09,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-08-18 20:57:09,997 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:57:09,998 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] [2020-08-18 20:57:09,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 20:57:09,998 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:57:09,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:57:09,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1077665999, now seen corresponding path program 1 times [2020-08-18 20:57:09,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:57:09,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [749800902] [2020-08-18 20:57:09,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:57:10,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:10,318 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:57:10,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:57:10,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:10,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:57:10,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:10,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:57:10,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:10,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:57:10,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:10,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:57:10,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:10,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 20:57:10,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:10,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:57:10,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:10,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:57:10,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:10,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:57:10,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:10,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 20:57:10,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:10,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-18 20:57:10,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:10,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-18 20:57:10,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:10,448 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 20:57:10,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [749800902] [2020-08-18 20:57:10,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:57:10,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 20:57:10,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233471579] [2020-08-18 20:57:10,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 20:57:10,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:57:10,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 20:57:10,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 20:57:10,451 INFO L87 Difference]: Start difference. First operand 144 states and 168 transitions. Second operand 6 states. [2020-08-18 20:57:10,757 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:57:12,087 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:57:12,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:57:12,931 INFO L93 Difference]: Finished difference Result 407 states and 503 transitions. [2020-08-18 20:57:12,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 20:57:12,932 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-08-18 20:57:12,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:57:12,936 INFO L225 Difference]: With dead ends: 407 [2020-08-18 20:57:12,936 INFO L226 Difference]: Without dead ends: 287 [2020-08-18 20:57:12,937 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 20:57:12,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-08-18 20:57:12,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 244. [2020-08-18 20:57:12,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-08-18 20:57:12,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 277 transitions. [2020-08-18 20:57:12,996 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 277 transitions. Word has length 76 [2020-08-18 20:57:12,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:57:12,996 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 277 transitions. [2020-08-18 20:57:12,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 20:57:12,997 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 277 transitions. [2020-08-18 20:57:12,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-18 20:57:12,998 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:57:12,998 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] [2020-08-18 20:57:12,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 20:57:12,999 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:57:12,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:57:12,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1489636928, now seen corresponding path program 1 times [2020-08-18 20:57:12,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:57:13,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [737438889] [2020-08-18 20:57:13,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:57:13,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:13,336 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:57:13,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:57:13,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:13,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:57:13,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:13,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:57:13,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:13,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:57:13,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:13,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:57:13,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:13,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 20:57:13,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:13,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:57:13,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:13,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:57:13,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:13,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:57:13,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:13,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:57:13,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:13,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:57:13,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:13,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 20:57:13,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:13,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 20:57:13,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:13,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 20:57:13,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:13,494 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 20:57:13,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [737438889] [2020-08-18 20:57:13,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:57:13,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 20:57:13,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165619228] [2020-08-18 20:57:13,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 20:57:13,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:57:13,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 20:57:13,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 20:57:13,496 INFO L87 Difference]: Start difference. First operand 244 states and 277 transitions. Second operand 8 states. [2020-08-18 20:57:13,825 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:57:15,193 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:57:15,492 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:57:15,733 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:57:15,958 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:57:16,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:57:16,865 INFO L93 Difference]: Finished difference Result 641 states and 791 transitions. [2020-08-18 20:57:16,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 20:57:16,865 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 90 [2020-08-18 20:57:16,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:57:16,869 INFO L225 Difference]: With dead ends: 641 [2020-08-18 20:57:16,869 INFO L226 Difference]: Without dead ends: 421 [2020-08-18 20:57:16,871 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 20:57:16,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-08-18 20:57:16,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 378. [2020-08-18 20:57:16,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2020-08-18 20:57:16,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 436 transitions. [2020-08-18 20:57:16,964 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 436 transitions. Word has length 90 [2020-08-18 20:57:16,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:57:16,965 INFO L479 AbstractCegarLoop]: Abstraction has 378 states and 436 transitions. [2020-08-18 20:57:16,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 20:57:16,965 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 436 transitions. [2020-08-18 20:57:16,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-18 20:57:16,967 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:57:16,967 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 20:57:16,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 20:57:16,968 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:57:16,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:57:16,968 INFO L82 PathProgramCache]: Analyzing trace with hash -467189990, now seen corresponding path program 1 times [2020-08-18 20:57:16,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:57:16,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1026731554] [2020-08-18 20:57:16,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:57:16,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:17,288 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:57:17,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:57:17,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:17,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:57:17,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:17,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:57:17,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:17,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:57:17,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:17,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:57:17,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:17,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 20:57:17,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:17,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 20:57:17,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:17,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:57:17,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:17,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:57:17,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:17,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:57:17,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:17,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:57:17,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:17,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:57:17,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:17,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 20:57:17,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:17,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 20:57:17,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:17,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 20:57:17,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:17,416 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 20:57:17,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1026731554] [2020-08-18 20:57:17,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:57:17,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 20:57:17,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416117746] [2020-08-18 20:57:17,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 20:57:17,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:57:17,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 20:57:17,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-08-18 20:57:17,419 INFO L87 Difference]: Start difference. First operand 378 states and 436 transitions. Second operand 9 states. [2020-08-18 20:57:17,771 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:57:18,279 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:57:19,928 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:57:22,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:57:22,056 INFO L93 Difference]: Finished difference Result 980 states and 1245 transitions. [2020-08-18 20:57:22,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 20:57:22,058 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-08-18 20:57:22,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:57:22,064 INFO L225 Difference]: With dead ends: 980 [2020-08-18 20:57:22,064 INFO L226 Difference]: Without dead ends: 749 [2020-08-18 20:57:22,066 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 20:57:22,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2020-08-18 20:57:22,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 678. [2020-08-18 20:57:22,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2020-08-18 20:57:22,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 813 transitions. [2020-08-18 20:57:22,220 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 813 transitions. Word has length 94 [2020-08-18 20:57:22,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:57:22,221 INFO L479 AbstractCegarLoop]: Abstraction has 678 states and 813 transitions. [2020-08-18 20:57:22,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 20:57:22,221 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 813 transitions. [2020-08-18 20:57:22,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-18 20:57:22,225 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:57:22,225 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 20:57:22,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 20:57:22,226 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:57:22,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:57:22,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1892117019, now seen corresponding path program 1 times [2020-08-18 20:57:22,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:57:22,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615645968] [2020-08-18 20:57:22,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:57:22,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:22,475 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:57:22,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:57:22,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:22,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:57:22,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:22,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:57:22,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:22,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:57:22,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:22,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:57:22,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:22,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 20:57:22,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:22,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 20:57:22,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:22,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:57:22,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:22,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:57:22,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:22,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:57:22,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:22,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:57:22,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:22,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:57:22,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:22,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 20:57:22,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:22,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 20:57:22,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:22,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 20:57:22,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:22,633 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 20:57:22,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615645968] [2020-08-18 20:57:22,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:57:22,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 20:57:22,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515074978] [2020-08-18 20:57:22,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 20:57:22,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:57:22,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 20:57:22,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-18 20:57:22,636 INFO L87 Difference]: Start difference. First operand 678 states and 813 transitions. Second operand 8 states. [2020-08-18 20:57:23,524 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:57:23,763 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:57:24,015 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:57:25,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:57:25,274 INFO L93 Difference]: Finished difference Result 1250 states and 1552 transitions. [2020-08-18 20:57:25,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 20:57:25,275 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2020-08-18 20:57:25,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:57:25,280 INFO L225 Difference]: With dead ends: 1250 [2020-08-18 20:57:25,281 INFO L226 Difference]: Without dead ends: 723 [2020-08-18 20:57:25,284 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 20:57:25,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2020-08-18 20:57:25,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 678. [2020-08-18 20:57:25,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2020-08-18 20:57:25,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 812 transitions. [2020-08-18 20:57:25,436 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 812 transitions. Word has length 94 [2020-08-18 20:57:25,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:57:25,437 INFO L479 AbstractCegarLoop]: Abstraction has 678 states and 812 transitions. [2020-08-18 20:57:25,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 20:57:25,437 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 812 transitions. [2020-08-18 20:57:25,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-18 20:57:25,439 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:57:25,439 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 20:57:25,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 20:57:25,439 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:57:25,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:57:25,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1743318755, now seen corresponding path program 1 times [2020-08-18 20:57:25,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:57:25,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103071779] [2020-08-18 20:57:25,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:57:25,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:25,728 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:57:25,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:57:25,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:25,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:57:25,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:25,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:57:25,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:25,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:57:25,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:25,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:57:25,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:25,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 20:57:25,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:25,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 20:57:25,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:25,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:57:25,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:25,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:57:25,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:25,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:57:25,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:25,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:57:25,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:25,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:57:25,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:25,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 20:57:25,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:25,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 20:57:25,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:25,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 20:57:25,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:25,887 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 20:57:25,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2103071779] [2020-08-18 20:57:25,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:57:25,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 20:57:25,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711530787] [2020-08-18 20:57:25,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 20:57:25,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:57:25,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 20:57:25,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 20:57:25,889 INFO L87 Difference]: Start difference. First operand 678 states and 812 transitions. Second operand 12 states. [2020-08-18 20:57:26,380 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:57:26,629 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:57:26,893 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:57:27,610 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:57:27,882 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:57:28,154 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:57:28,402 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:57:29,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:57:29,854 INFO L93 Difference]: Finished difference Result 1343 states and 1658 transitions. [2020-08-18 20:57:29,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 20:57:29,855 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 94 [2020-08-18 20:57:29,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:57:29,861 INFO L225 Difference]: With dead ends: 1343 [2020-08-18 20:57:29,862 INFO L226 Difference]: Without dead ends: 689 [2020-08-18 20:57:29,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-18 20:57:29,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2020-08-18 20:57:29,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 649. [2020-08-18 20:57:29,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-18 20:57:29,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 772 transitions. [2020-08-18 20:57:29,995 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 772 transitions. Word has length 94 [2020-08-18 20:57:29,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:57:29,996 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 772 transitions. [2020-08-18 20:57:29,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 20:57:29,996 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 772 transitions. [2020-08-18 20:57:29,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-08-18 20:57:29,998 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:57:29,999 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, 1] [2020-08-18 20:57:29,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 20:57:29,999 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:57:29,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:57:29,999 INFO L82 PathProgramCache]: Analyzing trace with hash -794227168, now seen corresponding path program 1 times [2020-08-18 20:57:30,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:57:30,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1310788467] [2020-08-18 20:57:30,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:57:30,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:30,367 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:57:30,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:57:30,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:30,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:57:30,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:30,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:57:30,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:30,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:57:30,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:30,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:57:30,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:30,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 20:57:30,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:30,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 20:57:30,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:30,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:57:30,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:30,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:57:30,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:30,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:57:30,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:30,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:57:30,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:30,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:57:30,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:30,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 20:57:30,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:30,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 20:57:30,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:30,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 20:57:30,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:30,589 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 20:57:30,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1310788467] [2020-08-18 20:57:30,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:57:30,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-18 20:57:30,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258912700] [2020-08-18 20:57:30,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 20:57:30,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:57:30,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 20:57:30,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-08-18 20:57:30,593 INFO L87 Difference]: Start difference. First operand 649 states and 772 transitions. Second operand 13 states. [2020-08-18 20:57:31,320 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:57:31,566 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:57:31,820 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:57:32,923 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:57:33,578 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:57:33,910 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:57:34,206 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:57:34,972 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:57:35,283 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:57:35,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:57:35,953 INFO L93 Difference]: Finished difference Result 1307 states and 1571 transitions. [2020-08-18 20:57:35,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-18 20:57:35,954 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 95 [2020-08-18 20:57:35,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:57:35,959 INFO L225 Difference]: With dead ends: 1307 [2020-08-18 20:57:35,959 INFO L226 Difference]: Without dead ends: 682 [2020-08-18 20:57:35,963 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2020-08-18 20:57:35,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2020-08-18 20:57:36,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 649. [2020-08-18 20:57:36,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-18 20:57:36,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 756 transitions. [2020-08-18 20:57:36,095 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 756 transitions. Word has length 95 [2020-08-18 20:57:36,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:57:36,096 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 756 transitions. [2020-08-18 20:57:36,096 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 20:57:36,096 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 756 transitions. [2020-08-18 20:57:36,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-08-18 20:57:36,100 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:57:36,100 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:57:36,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 20:57:36,101 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:57:36,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:57:36,101 INFO L82 PathProgramCache]: Analyzing trace with hash -252196105, now seen corresponding path program 1 times [2020-08-18 20:57:36,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:57:36,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081712398] [2020-08-18 20:57:36,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:57:36,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:36,414 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:57:36,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:57:36,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:36,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:57:36,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:36,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:57:36,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:36,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:57:36,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:36,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:57:36,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:36,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 20:57:36,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:36,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:57:36,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:36,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:57:36,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:36,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:57:36,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:36,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:57:36,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:36,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:57:36,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:36,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:57:36,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:36,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 20:57:36,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:36,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:57:36,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:36,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-18 20:57:36,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:36,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-18 20:57:36,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:36,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:57:36,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:36,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:57:36,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:36,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 20:57:36,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:36,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 20:57:36,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:36,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-18 20:57:36,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:36,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-18 20:57:36,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:36,660 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-18 20:57:36,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081712398] [2020-08-18 20:57:36,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:57:36,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 20:57:36,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534679574] [2020-08-18 20:57:36,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 20:57:36,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:57:36,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 20:57:36,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 20:57:36,663 INFO L87 Difference]: Start difference. First operand 649 states and 756 transitions. Second operand 10 states. [2020-08-18 20:57:37,726 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:57:37,957 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:57:38,196 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:57:38,442 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:57:39,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:57:39,480 INFO L93 Difference]: Finished difference Result 1216 states and 1446 transitions. [2020-08-18 20:57:39,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 20:57:39,486 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 139 [2020-08-18 20:57:39,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:57:39,490 INFO L225 Difference]: With dead ends: 1216 [2020-08-18 20:57:39,491 INFO L226 Difference]: Without dead ends: 670 [2020-08-18 20:57:39,493 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 20:57:39,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-08-18 20:57:39,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 649. [2020-08-18 20:57:39,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-18 20:57:39,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 754 transitions. [2020-08-18 20:57:39,607 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 754 transitions. Word has length 139 [2020-08-18 20:57:39,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:57:39,608 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 754 transitions. [2020-08-18 20:57:39,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 20:57:39,608 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 754 transitions. [2020-08-18 20:57:39,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-08-18 20:57:39,610 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:57:39,611 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:57:39,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 20:57:39,611 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:57:39,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:57:39,611 INFO L82 PathProgramCache]: Analyzing trace with hash 2084196405, now seen corresponding path program 1 times [2020-08-18 20:57:39,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:57:39,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717081541] [2020-08-18 20:57:39,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:57:39,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:39,913 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:57:39,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:57:39,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:39,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:57:39,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:39,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:57:39,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:39,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:57:39,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:39,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:57:39,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:39,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 20:57:39,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:40,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:57:40,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:40,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:57:40,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:40,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:57:40,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:40,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:57:40,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:40,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:57:40,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:40,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:57:40,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:40,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 20:57:40,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:40,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:57:40,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:40,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-18 20:57:40,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:40,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-18 20:57:40,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:40,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:57:40,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:40,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:57:40,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:40,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 20:57:40,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:40,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 20:57:40,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:40,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-18 20:57:40,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:40,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-18 20:57:40,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:40,144 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-18 20:57:40,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717081541] [2020-08-18 20:57:40,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:57:40,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 20:57:40,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981236156] [2020-08-18 20:57:40,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 20:57:40,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:57:40,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 20:57:40,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-18 20:57:40,149 INFO L87 Difference]: Start difference. First operand 649 states and 754 transitions. Second operand 12 states. [2020-08-18 20:57:40,614 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:57:40,867 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:57:41,094 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:57:41,739 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:57:41,983 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:57:42,216 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:57:43,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:57:43,361 INFO L93 Difference]: Finished difference Result 1124 states and 1336 transitions. [2020-08-18 20:57:43,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 20:57:43,362 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 139 [2020-08-18 20:57:43,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:57:43,365 INFO L225 Difference]: With dead ends: 1124 [2020-08-18 20:57:43,365 INFO L226 Difference]: Without dead ends: 573 [2020-08-18 20:57:43,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 20:57:43,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2020-08-18 20:57:43,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 552. [2020-08-18 20:57:43,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 552 states. [2020-08-18 20:57:43,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 639 transitions. [2020-08-18 20:57:43,477 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 639 transitions. Word has length 139 [2020-08-18 20:57:43,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:57:43,478 INFO L479 AbstractCegarLoop]: Abstraction has 552 states and 639 transitions. [2020-08-18 20:57:43,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 20:57:43,478 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 639 transitions. [2020-08-18 20:57:43,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-18 20:57:43,480 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:57:43,481 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, 1, 1, 1, 1, 1, 1] [2020-08-18 20:57:43,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 20:57:43,481 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:57:43,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:57:43,482 INFO L82 PathProgramCache]: Analyzing trace with hash 2081124794, now seen corresponding path program 1 times [2020-08-18 20:57:43,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:57:43,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [70860281] [2020-08-18 20:57:43,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:57:43,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:43,771 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:57:43,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:57:43,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:43,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:57:43,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:43,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:57:43,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:43,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:57:43,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:43,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:57:43,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:43,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 20:57:43,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:43,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 20:57:43,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:43,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:57:43,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:43,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:57:43,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:43,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:57:43,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:43,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:57:43,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:43,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:57:43,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:43,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:57:43,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:43,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 20:57:43,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:43,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:57:43,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:43,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-18 20:57:43,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:43,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-18 20:57:43,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:43,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:57:43,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:43,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:57:43,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:43,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 20:57:43,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:43,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-18 20:57:43,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:43,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 20:57:43,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:43,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-18 20:57:43,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:43,946 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-08-18 20:57:43,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [70860281] [2020-08-18 20:57:43,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:57:43,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 20:57:43,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439797676] [2020-08-18 20:57:43,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 20:57:43,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:57:43,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 20:57:43,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-18 20:57:43,949 INFO L87 Difference]: Start difference. First operand 552 states and 639 transitions. Second operand 11 states. [2020-08-18 20:57:44,268 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:57:44,879 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:57:45,851 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:57:46,368 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-08-18 20:57:46,853 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-08-18 20:57:47,095 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:57:48,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:57:48,694 INFO L93 Difference]: Finished difference Result 1637 states and 1961 transitions. [2020-08-18 20:57:48,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 20:57:48,695 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 143 [2020-08-18 20:57:48,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:57:48,701 INFO L225 Difference]: With dead ends: 1637 [2020-08-18 20:57:48,702 INFO L226 Difference]: Without dead ends: 1109 [2020-08-18 20:57:48,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2020-08-18 20:57:48,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2020-08-18 20:57:48,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1077. [2020-08-18 20:57:48,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1077 states. [2020-08-18 20:57:48,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1232 transitions. [2020-08-18 20:57:48,941 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1232 transitions. Word has length 143 [2020-08-18 20:57:48,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:57:48,944 INFO L479 AbstractCegarLoop]: Abstraction has 1077 states and 1232 transitions. [2020-08-18 20:57:48,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 20:57:48,944 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1232 transitions. [2020-08-18 20:57:48,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-18 20:57:48,947 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:57:48,947 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, 1, 1, 1, 1, 1, 1] [2020-08-18 20:57:48,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 20:57:48,947 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:57:48,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:57:48,948 INFO L82 PathProgramCache]: Analyzing trace with hash -708969378, now seen corresponding path program 1 times [2020-08-18 20:57:48,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:57:48,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [741494705] [2020-08-18 20:57:48,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:57:48,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:49,235 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:57:49,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:57:49,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:49,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:57:49,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:49,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:57:49,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:49,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:57:49,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:49,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:57:49,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:49,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 20:57:49,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:49,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 20:57:49,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:49,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 20:57:49,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:49,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:57:49,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:49,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:57:49,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:49,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:57:49,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:49,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:57:49,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:49,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:57:49,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:49,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:57:49,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:49,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 20:57:49,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:49,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:57:49,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:49,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 20:57:49,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:49,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 20:57:49,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:49,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:57:49,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:49,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:57:49,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:49,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 20:57:49,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:49,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-18 20:57:49,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:49,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-18 20:57:49,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:49,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-18 20:57:49,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:49,429 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 20:57:49,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [741494705] [2020-08-18 20:57:49,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:57:49,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 20:57:49,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434629083] [2020-08-18 20:57:49,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 20:57:49,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:57:49,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 20:57:49,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-18 20:57:49,432 INFO L87 Difference]: Start difference. First operand 1077 states and 1232 transitions. Second operand 15 states. [2020-08-18 20:57:50,115 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:57:50,373 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:57:50,592 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:57:51,170 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:57:52,251 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:57:52,567 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:57:52,858 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:57:53,093 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:57:55,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:57:55,109 INFO L93 Difference]: Finished difference Result 2187 states and 2605 transitions. [2020-08-18 20:57:55,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-18 20:57:55,110 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 147 [2020-08-18 20:57:55,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:57:55,117 INFO L225 Difference]: With dead ends: 2187 [2020-08-18 20:57:55,117 INFO L226 Difference]: Without dead ends: 1134 [2020-08-18 20:57:55,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=227, Invalid=765, Unknown=0, NotChecked=0, Total=992 [2020-08-18 20:57:55,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2020-08-18 20:57:55,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 1011. [2020-08-18 20:57:55,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1011 states. [2020-08-18 20:57:55,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1153 transitions. [2020-08-18 20:57:55,339 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1153 transitions. Word has length 147 [2020-08-18 20:57:55,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:57:55,340 INFO L479 AbstractCegarLoop]: Abstraction has 1011 states and 1153 transitions. [2020-08-18 20:57:55,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 20:57:55,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1153 transitions. [2020-08-18 20:57:55,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-18 20:57:55,342 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:57:55,342 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:57:55,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-18 20:57:55,343 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:57:55,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:57:55,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1161992490, now seen corresponding path program 1 times [2020-08-18 20:57:55,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:57:55,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506843647] [2020-08-18 20:57:55,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:57:55,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:55,579 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:57:55,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:57:55,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:55,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:57:55,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:55,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:57:55,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:55,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:57:55,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:55,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:57:55,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:55,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 20:57:55,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:55,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 20:57:55,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:55,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:57:55,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:55,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:57:55,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:55,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:57:55,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:55,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:57:55,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:55,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:57:55,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:55,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:57:55,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:55,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 20:57:55,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:55,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:57:55,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:55,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 20:57:55,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:55,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-18 20:57:55,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:55,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-18 20:57:55,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:55,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:57:55,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:55,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:57:55,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:55,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 20:57:55,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:55,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 20:57:55,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:55,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-18 20:57:55,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:55,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-18 20:57:55,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:55,838 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-08-18 20:57:55,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506843647] [2020-08-18 20:57:55,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:57:55,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 20:57:55,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703956054] [2020-08-18 20:57:55,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 20:57:55,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:57:55,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 20:57:55,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-18 20:57:55,841 INFO L87 Difference]: Start difference. First operand 1011 states and 1153 transitions. Second operand 15 states. [2020-08-18 20:57:56,509 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:57:57,235 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187