/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product40.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 16:26:35,075 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 16:26:35,078 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 16:26:35,117 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 16:26:35,118 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 16:26:35,126 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 16:26:35,129 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 16:26:35,132 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 16:26:35,134 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 16:26:35,137 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 16:26:35,138 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 16:26:35,139 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 16:26:35,139 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 16:26:35,142 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 16:26:35,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 16:26:35,146 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 16:26:35,146 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 16:26:35,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 16:26:35,148 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 16:26:35,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 16:26:35,151 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 16:26:35,152 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 16:26:35,153 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 16:26:35,153 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 16:26:35,155 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 16:26:35,156 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 16:26:35,156 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 16:26:35,157 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 16:26:35,157 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 16:26:35,158 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 16:26:35,158 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 16:26:35,159 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 16:26:35,159 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 16:26:35,160 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 16:26:35,161 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 16:26:35,161 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 16:26:35,162 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 16:26:35,162 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 16:26:35,162 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 16:26:35,163 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 16:26:35,163 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 16:26:35,164 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 [2020-08-21 16:26:35,189 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 16:26:35,189 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 16:26:35,190 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 16:26:35,190 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 16:26:35,190 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 16:26:35,191 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 16:26:35,191 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 16:26:35,191 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 16:26:35,191 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 16:26:35,191 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 16:26:35,192 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 16:26:35,192 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 16:26:35,192 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 16:26:35,192 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 16:26:35,192 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 16:26:35,192 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 16:26:35,193 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 16:26:35,193 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 16:26:35,193 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 16:26:35,193 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 16:26:35,193 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 16:26:35,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 16:26:35,194 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 16:26:35,194 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 16:26:35,194 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 16:26:35,194 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 16:26:35,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 16:26:35,195 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 16:26:35,195 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 16:26:35,195 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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 16:26:35,527 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 16:26:35,549 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 16:26:35,553 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 16:26:35,554 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 16:26:35,554 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 16:26:35,555 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product40.cil.c [2020-08-21 16:26:35,614 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e7ee31fad/f174183b725c447eaf71c9633bf56486/FLAG8ad5727fb [2020-08-21 16:26:36,186 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 16:26:36,187 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product40.cil.c [2020-08-21 16:26:36,200 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e7ee31fad/f174183b725c447eaf71c9633bf56486/FLAG8ad5727fb [2020-08-21 16:26:36,481 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e7ee31fad/f174183b725c447eaf71c9633bf56486 [2020-08-21 16:26:36,489 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 16:26:36,490 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 16:26:36,491 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 16:26:36,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 16:26:36,495 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 16:26:36,496 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:26:36" (1/1) ... [2020-08-21 16:26:36,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7edbd36f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:26:36, skipping insertion in model container [2020-08-21 16:26:36,499 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:26:36" (1/1) ... [2020-08-21 16:26:36,507 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 16:26:36,554 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 16:26:37,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:26:37,032 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 16:26:37,123 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:26:37,158 INFO L208 MainTranslator]: Completed translation [2020-08-21 16:26:37,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:26:37 WrapperNode [2020-08-21 16:26:37,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 16:26:37,160 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 16:26:37,160 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 16:26:37,160 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 16:26:37,172 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:26:37" (1/1) ... [2020-08-21 16:26:37,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:26:37" (1/1) ... [2020-08-21 16:26:37,193 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:26:37" (1/1) ... [2020-08-21 16:26:37,193 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:26:37" (1/1) ... [2020-08-21 16:26:37,238 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:26:37" (1/1) ... [2020-08-21 16:26:37,250 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:26:37" (1/1) ... [2020-08-21 16:26:37,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:26:37" (1/1) ... [2020-08-21 16:26:37,271 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 16:26:37,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 16:26:37,272 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 16:26:37,272 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 16:26:37,273 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:26:37" (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 [2020-08-21 16:26:37,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 16:26:37,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 16:26:37,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 16:26:37,337 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 16:26:37,337 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 16:26:37,337 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 16:26:37,337 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 16:26:37,337 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 16:26:37,337 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 16:26:37,338 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 16:26:37,338 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 16:26:37,338 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 16:26:37,338 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 16:26:37,338 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 16:26:37,338 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 16:26:37,339 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 16:26:37,339 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 16:26:37,339 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 16:26:37,339 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 16:26:37,339 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 16:26:37,339 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 16:26:37,340 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 16:26:37,340 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-21 16:26:37,340 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-21 16:26:37,340 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-21 16:26:37,340 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 16:26:37,340 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 16:26:37,341 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 16:26:37,341 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 16:26:37,341 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 16:26:37,341 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 16:26:37,341 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 16:26:37,341 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 16:26:37,342 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 16:26:37,342 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 16:26:37,342 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 16:26:37,342 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 16:26:37,342 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 16:26:37,342 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 16:26:37,343 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 16:26:37,343 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 16:26:37,343 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 16:26:37,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 16:26:37,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 16:26:37,343 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 16:26:37,344 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 16:26:37,344 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 16:26:37,344 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 16:26:37,344 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 16:26:37,344 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 16:26:37,344 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 16:26:37,344 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 16:26:37,345 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 16:26:37,345 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 16:26:37,345 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 16:26:37,345 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 16:26:37,345 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-21 16:26:37,345 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-21 16:26:37,346 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 16:26:37,346 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 16:26:37,346 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 16:26:37,346 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 16:26:37,346 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 16:26:37,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 16:26:37,347 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 16:26:37,347 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 16:26:37,347 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 16:26:37,347 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 16:26:37,347 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 16:26:37,347 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 16:26:37,347 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 16:26:37,347 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 16:26:37,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 16:26:37,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 16:26:37,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 16:26:37,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 16:26:37,348 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 16:26:37,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 16:26:37,349 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 16:26:37,349 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 16:26:37,349 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 16:26:37,349 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 16:26:37,349 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 16:26:37,349 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 16:26:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 16:26:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 16:26:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-21 16:26:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 16:26:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 16:26:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 16:26:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 16:26:37,351 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 16:26:37,351 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 16:26:37,351 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 16:26:37,351 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 16:26:37,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 16:26:37,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 16:26:37,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 16:26:38,409 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 16:26:38,410 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 16:26:38,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:26:38 BoogieIcfgContainer [2020-08-21 16:26:38,419 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 16:26:38,422 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 16:26:38,423 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 16:26:38,426 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 16:26:38,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 04:26:36" (1/3) ... [2020-08-21 16:26:38,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42f234be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:26:38, skipping insertion in model container [2020-08-21 16:26:38,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:26:37" (2/3) ... [2020-08-21 16:26:38,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42f234be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:26:38, skipping insertion in model container [2020-08-21 16:26:38,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:26:38" (3/3) ... [2020-08-21 16:26:38,430 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product40.cil.c [2020-08-21 16:26:38,441 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 16:26:38,451 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 16:26:38,466 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 16:26:38,495 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 16:26:38,495 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 16:26:38,496 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 16:26:38,496 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 16:26:38,496 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 16:26:38,497 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 16:26:38,497 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 16:26:38,497 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 16:26:38,520 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states. [2020-08-21 16:26:38,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 16:26:38,532 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:26:38,534 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:26:38,534 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:26:38,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:26:38,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1231866733, now seen corresponding path program 1 times [2020-08-21 16:26:38,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:26:38,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [697186875] [2020-08-21 16:26:38,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:26:38,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:39,238 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:26:39,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:26:39,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:39,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:26:39,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:39,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:26:39,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:39,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:26:39,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:39,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:26:39,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:39,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:26:39,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:39,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 16:26:39,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:39,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:26:39,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:39,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 16:26:39,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:39,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 16:26:39,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:39,360 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 16:26:39,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [697186875] [2020-08-21 16:26:39,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:26:39,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 16:26:39,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324213730] [2020-08-21 16:26:39,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 16:26:39,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:26:39,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 16:26:39,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 16:26:39,390 INFO L87 Difference]: Start difference. First operand 189 states. Second operand 4 states. [2020-08-21 16:26:40,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:26:40,622 INFO L93 Difference]: Finished difference Result 324 states and 416 transitions. [2020-08-21 16:26:40,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 16:26:40,624 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-21 16:26:40,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:26:40,639 INFO L225 Difference]: With dead ends: 324 [2020-08-21 16:26:40,640 INFO L226 Difference]: Without dead ends: 179 [2020-08-21 16:26:40,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 16:26:40,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-21 16:26:40,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 146. [2020-08-21 16:26:40,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-08-21 16:26:40,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 171 transitions. [2020-08-21 16:26:40,762 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 171 transitions. Word has length 59 [2020-08-21 16:26:40,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:26:40,762 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 171 transitions. [2020-08-21 16:26:40,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 16:26:40,763 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 171 transitions. [2020-08-21 16:26:40,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-21 16:26:40,774 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:26:40,775 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:26:40,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 16:26:40,775 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:26:40,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:26:40,777 INFO L82 PathProgramCache]: Analyzing trace with hash 735941424, now seen corresponding path program 1 times [2020-08-21 16:26:40,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:26:40,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099437634] [2020-08-21 16:26:40,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:26:40,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:41,152 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:26:41,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:26:41,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:41,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:26:41,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:41,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:26:41,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:41,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:26:41,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:41,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:26:41,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:41,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:26:41,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:41,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 16:26:41,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:41,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:26:41,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:41,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 16:26:41,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:41,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 16:26:41,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:41,243 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 16:26:41,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099437634] [2020-08-21 16:26:41,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:26:41,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 16:26:41,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492910785] [2020-08-21 16:26:41,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 16:26:41,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:26:41,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 16:26:41,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:26:41,248 INFO L87 Difference]: Start difference. First operand 146 states and 171 transitions. Second operand 5 states. [2020-08-21 16:26:41,729 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:26:42,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:26:42,719 INFO L93 Difference]: Finished difference Result 259 states and 316 transitions. [2020-08-21 16:26:42,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 16:26:42,720 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-21 16:26:42,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:26:42,724 INFO L225 Difference]: With dead ends: 259 [2020-08-21 16:26:42,725 INFO L226 Difference]: Without dead ends: 169 [2020-08-21 16:26:42,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 16:26:42,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-08-21 16:26:42,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 137. [2020-08-21 16:26:42,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-08-21 16:26:42,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 159 transitions. [2020-08-21 16:26:42,767 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 159 transitions. Word has length 60 [2020-08-21 16:26:42,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:26:42,768 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 159 transitions. [2020-08-21 16:26:42,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 16:26:42,768 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 159 transitions. [2020-08-21 16:26:42,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-21 16:26:42,770 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:26:42,770 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:26:42,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 16:26:42,771 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:26:42,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:26:42,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1019781836, now seen corresponding path program 1 times [2020-08-21 16:26:42,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:26:42,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37592039] [2020-08-21 16:26:42,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:26:42,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:43,128 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:26:43,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:26:43,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:43,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:26:43,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:43,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:26:43,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:43,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:26:43,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:43,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:26:43,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:43,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:26:43,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:43,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 16:26:43,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:43,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:26:43,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:43,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 16:26:43,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:43,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 16:26:43,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:43,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 16:26:43,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [37592039] [2020-08-21 16:26:43,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:26:43,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 16:26:43,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598339997] [2020-08-21 16:26:43,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 16:26:43,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:26:43,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 16:26:43,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 16:26:43,233 INFO L87 Difference]: Start difference. First operand 137 states and 159 transitions. Second operand 9 states. [2020-08-21 16:26:43,607 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:26:43,962 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:26:44,219 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:26:44,463 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:26:45,403 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:26:47,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:26:47,254 INFO L93 Difference]: Finished difference Result 460 states and 568 transitions. [2020-08-21 16:26:47,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 16:26:47,255 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-21 16:26:47,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:26:47,262 INFO L225 Difference]: With dead ends: 460 [2020-08-21 16:26:47,262 INFO L226 Difference]: Without dead ends: 351 [2020-08-21 16:26:47,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-21 16:26:47,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2020-08-21 16:26:47,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 290. [2020-08-21 16:26:47,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-08-21 16:26:47,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 350 transitions. [2020-08-21 16:26:47,339 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 350 transitions. Word has length 65 [2020-08-21 16:26:47,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:26:47,339 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 350 transitions. [2020-08-21 16:26:47,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 16:26:47,339 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 350 transitions. [2020-08-21 16:26:47,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-21 16:26:47,341 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:26:47,342 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:26:47,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 16:26:47,342 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:26:47,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:26:47,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1071873071, now seen corresponding path program 1 times [2020-08-21 16:26:47,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:26:47,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525645484] [2020-08-21 16:26:47,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:26:47,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:47,704 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:26:47,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:26:47,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:47,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:26:47,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:47,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:26:47,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:47,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:26:47,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:47,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:26:47,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:47,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:26:47,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:47,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 16:26:47,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:47,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 16:26:47,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:47,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:26:47,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:47,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 16:26:47,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:47,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 16:26:47,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:47,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 16:26:47,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [525645484] [2020-08-21 16:26:47,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:26:47,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 16:26:47,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854962293] [2020-08-21 16:26:47,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 16:26:47,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:26:47,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 16:26:47,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 16:26:47,827 INFO L87 Difference]: Start difference. First operand 290 states and 350 transitions. Second operand 9 states. [2020-08-21 16:26:48,193 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:26:48,930 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:26:49,704 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:26:50,035 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:26:50,293 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:26:50,550 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:26:51,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:26:51,341 INFO L93 Difference]: Finished difference Result 747 states and 974 transitions. [2020-08-21 16:26:51,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 16:26:51,342 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-21 16:26:51,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:26:51,349 INFO L225 Difference]: With dead ends: 747 [2020-08-21 16:26:51,349 INFO L226 Difference]: Without dead ends: 485 [2020-08-21 16:26:51,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 16:26:51,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2020-08-21 16:26:51,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 417. [2020-08-21 16:26:51,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-08-21 16:26:51,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 501 transitions. [2020-08-21 16:26:51,475 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 501 transitions. Word has length 70 [2020-08-21 16:26:51,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:26:51,475 INFO L479 AbstractCegarLoop]: Abstraction has 417 states and 501 transitions. [2020-08-21 16:26:51,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 16:26:51,476 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 501 transitions. [2020-08-21 16:26:51,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 16:26:51,478 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:26:51,478 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:26:51,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 16:26:51,479 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:26:51,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:26:51,479 INFO L82 PathProgramCache]: Analyzing trace with hash -573764694, now seen corresponding path program 1 times [2020-08-21 16:26:51,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:26:51,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [686276671] [2020-08-21 16:26:51,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:26:51,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:51,738 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:26:51,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:26:51,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:51,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:26:51,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:51,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:26:51,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:51,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:26:51,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:51,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:26:51,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:51,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:26:51,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:51,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 16:26:51,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:51,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:26:51,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:51,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 16:26:51,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:51,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:26:51,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:51,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:26:51,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:51,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:26:51,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:51,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:26:51,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:51,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-21 16:26:51,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:51,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 16:26:51,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:51,882 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 16:26:51,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [686276671] [2020-08-21 16:26:51,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:26:51,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 16:26:51,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857260888] [2020-08-21 16:26:51,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 16:26:51,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:26:51,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 16:26:51,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 16:26:51,885 INFO L87 Difference]: Start difference. First operand 417 states and 501 transitions. Second operand 9 states. [2020-08-21 16:26:52,251 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:26:53,309 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:26:53,554 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 16:26:53,809 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:26:54,081 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:26:55,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:26:55,306 INFO L93 Difference]: Finished difference Result 1260 states and 1685 transitions. [2020-08-21 16:26:55,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 16:26:55,308 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-21 16:26:55,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:26:55,314 INFO L225 Difference]: With dead ends: 1260 [2020-08-21 16:26:55,314 INFO L226 Difference]: Without dead ends: 871 [2020-08-21 16:26:55,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-21 16:26:55,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2020-08-21 16:26:55,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 743. [2020-08-21 16:26:55,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2020-08-21 16:26:55,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 897 transitions. [2020-08-21 16:26:55,490 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 897 transitions. Word has length 93 [2020-08-21 16:26:55,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:26:55,493 INFO L479 AbstractCegarLoop]: Abstraction has 743 states and 897 transitions. [2020-08-21 16:26:55,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 16:26:55,493 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 897 transitions. [2020-08-21 16:26:55,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 16:26:55,496 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:26:55,496 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:26:55,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 16:26:55,497 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:26:55,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:26:55,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1995721705, now seen corresponding path program 1 times [2020-08-21 16:26:55,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:26:55,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [816986634] [2020-08-21 16:26:55,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:26:55,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:55,804 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:26:55,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:26:55,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:55,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:26:55,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:55,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:26:55,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:55,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:26:55,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:55,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:26:55,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:55,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:26:55,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:55,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 16:26:55,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:55,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:26:55,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:55,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 16:26:55,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:55,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:26:55,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:55,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:26:55,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:55,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:26:55,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:55,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:26:55,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:55,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-21 16:26:55,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:55,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 16:26:55,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:55,998 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 16:26:55,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [816986634] [2020-08-21 16:26:55,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:26:55,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 16:26:55,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254963016] [2020-08-21 16:26:56,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 16:26:56,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:26:56,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 16:26:56,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 16:26:56,002 INFO L87 Difference]: Start difference. First operand 743 states and 897 transitions. Second operand 9 states. [2020-08-21 16:26:57,119 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:26:57,367 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 16:26:57,624 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:26:57,856 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:26:58,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:26:58,695 INFO L93 Difference]: Finished difference Result 1585 states and 2019 transitions. [2020-08-21 16:26:58,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 16:26:58,696 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-21 16:26:58,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:26:58,706 INFO L225 Difference]: With dead ends: 1585 [2020-08-21 16:26:58,706 INFO L226 Difference]: Without dead ends: 870 [2020-08-21 16:26:58,709 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 16:26:58,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2020-08-21 16:26:58,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 763. [2020-08-21 16:26:58,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 763 states. [2020-08-21 16:26:58,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 917 transitions. [2020-08-21 16:26:58,925 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 917 transitions. Word has length 93 [2020-08-21 16:26:58,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:26:58,931 INFO L479 AbstractCegarLoop]: Abstraction has 763 states and 917 transitions. [2020-08-21 16:26:58,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 16:26:58,931 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 917 transitions. [2020-08-21 16:26:58,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 16:26:58,939 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:26:58,941 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:26:58,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 16:26:58,943 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:26:58,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:26:58,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1597645717, now seen corresponding path program 1 times [2020-08-21 16:26:58,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:26:58,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1471017121] [2020-08-21 16:26:58,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:26:58,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:59,304 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:26:59,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:26:59,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:59,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:26:59,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:59,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:26:59,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:59,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:26:59,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:59,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:26:59,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:59,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:26:59,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:59,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 16:26:59,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:59,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:26:59,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:59,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 16:26:59,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:59,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:26:59,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:59,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:26:59,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:59,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:26:59,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:59,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:26:59,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:59,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-21 16:26:59,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:59,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 16:26:59,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:26:59,480 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 16:26:59,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1471017121] [2020-08-21 16:26:59,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:26:59,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 16:26:59,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113863646] [2020-08-21 16:26:59,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 16:26:59,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:26:59,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 16:26:59,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 16:26:59,483 INFO L87 Difference]: Start difference. First operand 763 states and 917 transitions. Second operand 11 states. [2020-08-21 16:26:59,964 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:27:00,214 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:27:00,454 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:27:01,295 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:27:01,558 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:27:01,796 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:27:02,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:27:02,617 INFO L93 Difference]: Finished difference Result 1442 states and 1826 transitions. [2020-08-21 16:27:02,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 16:27:02,618 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-21 16:27:02,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:27:02,623 INFO L225 Difference]: With dead ends: 1442 [2020-08-21 16:27:02,623 INFO L226 Difference]: Without dead ends: 707 [2020-08-21 16:27:02,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 16:27:02,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-08-21 16:27:02,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 630. [2020-08-21 16:27:02,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 630 states. [2020-08-21 16:27:02,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 739 transitions. [2020-08-21 16:27:02,781 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 739 transitions. Word has length 93 [2020-08-21 16:27:02,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:27:02,783 INFO L479 AbstractCegarLoop]: Abstraction has 630 states and 739 transitions. [2020-08-21 16:27:02,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 16:27:02,784 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 739 transitions. [2020-08-21 16:27:02,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-21 16:27:02,787 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:27:02,787 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:27:02,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 16:27:02,788 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:27:02,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:27:02,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1394866514, now seen corresponding path program 1 times [2020-08-21 16:27:02,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:27:02,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [787463418] [2020-08-21 16:27:02,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:27:02,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:03,218 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:27:03,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:27:03,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:03,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:27:03,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:03,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:27:03,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:03,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:27:03,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:03,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:27:03,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:03,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:27:03,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:03,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 16:27:03,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:03,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 16:27:03,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:03,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:27:03,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:03,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-21 16:27:03,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:03,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:27:03,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:03,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:27:03,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:03,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:27:03,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:03,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:27:03,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:03,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 16:27:03,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:03,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 16:27:03,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:03,396 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 16:27:03,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [787463418] [2020-08-21 16:27:03,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:27:03,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 16:27:03,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370864981] [2020-08-21 16:27:03,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 16:27:03,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:27:03,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 16:27:03,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-21 16:27:03,402 INFO L87 Difference]: Start difference. First operand 630 states and 739 transitions. Second operand 12 states. [2020-08-21 16:27:03,763 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:27:04,389 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:27:05,088 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:27:05,393 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:27:05,634 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 16:27:05,944 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:27:06,238 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:27:08,197 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:27:08,526 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:27:08,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:27:08,955 INFO L93 Difference]: Finished difference Result 1853 states and 2361 transitions. [2020-08-21 16:27:08,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-21 16:27:08,955 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 97 [2020-08-21 16:27:08,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:27:08,966 INFO L225 Difference]: With dead ends: 1853 [2020-08-21 16:27:08,966 INFO L226 Difference]: Without dead ends: 1437 [2020-08-21 16:27:08,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-21 16:27:08,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1437 states. [2020-08-21 16:27:09,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1437 to 1299. [2020-08-21 16:27:09,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1299 states. [2020-08-21 16:27:09,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1299 states to 1299 states and 1525 transitions. [2020-08-21 16:27:09,189 INFO L78 Accepts]: Start accepts. Automaton has 1299 states and 1525 transitions. Word has length 97 [2020-08-21 16:27:09,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:27:09,190 INFO L479 AbstractCegarLoop]: Abstraction has 1299 states and 1525 transitions. [2020-08-21 16:27:09,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 16:27:09,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1299 states and 1525 transitions. [2020-08-21 16:27:09,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-21 16:27:09,195 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:27:09,196 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:27:09,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 16:27:09,196 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:27:09,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:27:09,197 INFO L82 PathProgramCache]: Analyzing trace with hash 773750625, now seen corresponding path program 1 times [2020-08-21 16:27:09,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:27:09,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1151805068] [2020-08-21 16:27:09,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:27:09,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:09,490 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:27:09,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:27:09,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:09,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:27:09,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:09,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:27:09,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:09,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:27:09,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:09,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:27:09,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:09,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:27:09,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:09,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 16:27:09,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:09,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 16:27:09,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:09,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:27:09,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:09,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:27:09,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:09,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:27:09,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:09,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:27:09,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:09,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:27:09,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:09,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:27:09,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:09,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:27:09,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:09,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 16:27:09,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:09,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:27:09,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:09,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-21 16:27:09,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:09,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:27:09,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:09,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-21 16:27:09,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:09,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 16:27:09,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:09,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:27:09,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:09,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:27:09,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:09,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 16:27:09,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:09,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:27:09,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:09,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-21 16:27:09,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:09,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-08-21 16:27:09,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:09,843 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-21 16:27:09,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1151805068] [2020-08-21 16:27:09,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:27:09,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 16:27:09,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748956332] [2020-08-21 16:27:09,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 16:27:09,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:27:09,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 16:27:09,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-21 16:27:09,847 INFO L87 Difference]: Start difference. First operand 1299 states and 1525 transitions. Second operand 16 states. [2020-08-21 16:27:10,424 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 16:27:10,753 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-21 16:27:11,037 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 16:27:11,307 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 16:27:12,033 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-08-21 16:27:12,407 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-21 16:27:12,743 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 16:27:13,152 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-21 16:27:13,524 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-21 16:27:14,694 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:27:15,656 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-08-21 16:27:16,174 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 193 [2020-08-21 16:27:16,486 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 16:27:17,068 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:27:17,482 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-21 16:27:18,102 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 194 [2020-08-21 16:27:18,654 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-08-21 16:27:19,168 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 16:27:19,696 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 195 [2020-08-21 16:27:20,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:27:20,503 INFO L93 Difference]: Finished difference Result 2875 states and 3500 transitions. [2020-08-21 16:27:20,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-08-21 16:27:20,504 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 157 [2020-08-21 16:27:20,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:27:20,515 INFO L225 Difference]: With dead ends: 2875 [2020-08-21 16:27:20,515 INFO L226 Difference]: Without dead ends: 1784 [2020-08-21 16:27:20,520 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1032 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=751, Invalid=3031, Unknown=0, NotChecked=0, Total=3782 [2020-08-21 16:27:20,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1784 states. [2020-08-21 16:27:20,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1784 to 1573. [2020-08-21 16:27:20,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-08-21 16:27:20,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 1829 transitions. [2020-08-21 16:27:20,826 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 1829 transitions. Word has length 157 [2020-08-21 16:27:20,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:27:20,827 INFO L479 AbstractCegarLoop]: Abstraction has 1573 states and 1829 transitions. [2020-08-21 16:27:20,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 16:27:20,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 1829 transitions. [2020-08-21 16:27:20,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-08-21 16:27:20,835 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:27:20,836 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:27:20,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 16:27:20,836 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:27:20,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:27:20,837 INFO L82 PathProgramCache]: Analyzing trace with hash -2117575381, now seen corresponding path program 1 times [2020-08-21 16:27:20,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:27:20,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [356419479] [2020-08-21 16:27:20,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:27:20,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:21,203 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:27:21,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:27:21,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:21,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:27:21,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:21,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:27:21,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:21,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:27:21,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:21,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:27:21,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:21,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:27:21,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:21,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 16:27:21,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:21,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 16:27:21,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:21,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:27:21,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:21,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:27:21,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:21,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:27:21,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:21,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:27:21,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:21,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:27:21,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:21,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:27:21,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:21,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:27:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:21,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 16:27:21,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:21,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:27:21,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:21,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-21 16:27:21,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:21,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:27:21,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:21,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:27:21,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:21,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:27:21,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:21,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 16:27:21,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:21,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:27:21,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:21,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:27:21,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:21,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 16:27:21,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:21,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:27:21,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:21,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 16:27:21,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:21,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:27:21,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:21,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-08-21 16:27:21,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:21,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:27:21,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:21,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:27:21,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:21,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:27:21,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:21,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 16:27:21,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:21,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:27:21,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:21,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:27:21,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:21,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 16:27:21,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:21,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 16:27:21,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:21,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:27:21,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:21,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-08-21 16:27:21,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:21,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:27:21,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:21,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-08-21 16:27:21,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:21,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:27:21,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:21,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:27:21,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:21,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:27:21,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:21,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:27:21,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:21,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-08-21 16:27:21,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:21,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-08-21 16:27:21,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:21,831 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 81 proven. 31 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-08-21 16:27:21,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [356419479] [2020-08-21 16:27:21,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:27:21,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 16:27:21,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528244310] [2020-08-21 16:27:21,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 16:27:21,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:27:21,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 16:27:21,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-21 16:27:21,837 INFO L87 Difference]: Start difference. First operand 1573 states and 1829 transitions. Second operand 15 states. [2020-08-21 16:27:23,304 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:27:23,589 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 16:27:23,839 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:27:24,094 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 16:27:24,338 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:27:25,322 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 16:27:25,831 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-21 16:27:26,298 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-21 16:27:26,651 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:27:29,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:27:29,233 INFO L93 Difference]: Finished difference Result 4467 states and 5409 transitions. [2020-08-21 16:27:29,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-21 16:27:29,234 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 273 [2020-08-21 16:27:29,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:27:29,249 INFO L225 Difference]: With dead ends: 4467 [2020-08-21 16:27:29,250 INFO L226 Difference]: Without dead ends: 2691 [2020-08-21 16:27:29,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=317, Invalid=1243, Unknown=0, NotChecked=0, Total=1560 [2020-08-21 16:27:29,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2691 states. [2020-08-21 16:27:29,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2691 to 2317. [2020-08-21 16:27:29,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2317 states. [2020-08-21 16:27:29,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2317 states to 2317 states and 2705 transitions. [2020-08-21 16:27:29,726 INFO L78 Accepts]: Start accepts. Automaton has 2317 states and 2705 transitions. Word has length 273 [2020-08-21 16:27:29,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:27:29,727 INFO L479 AbstractCegarLoop]: Abstraction has 2317 states and 2705 transitions. [2020-08-21 16:27:29,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 16:27:29,727 INFO L276 IsEmpty]: Start isEmpty. Operand 2317 states and 2705 transitions. [2020-08-21 16:27:29,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-08-21 16:27:29,736 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:27:29,737 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:27:29,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 16:27:29,737 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:27:29,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:27:29,738 INFO L82 PathProgramCache]: Analyzing trace with hash 856417488, now seen corresponding path program 1 times [2020-08-21 16:27:29,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:27:29,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [459007358] [2020-08-21 16:27:29,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:27:29,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:30,062 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:27:30,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:27:30,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:30,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:27:30,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:30,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:27:30,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:30,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:27:30,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:30,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:27:30,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:30,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:27:30,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:30,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 16:27:30,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:30,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 16:27:30,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:30,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:27:30,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:30,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:27:30,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:30,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:27:30,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:30,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:27:30,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:30,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:27:30,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:30,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:27:30,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:30,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:27:30,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:30,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 16:27:30,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:30,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:27:30,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:30,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-21 16:27:30,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:30,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:27:30,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:30,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:27:30,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:30,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:27:30,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:30,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 16:27:30,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:30,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:27:30,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:30,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:27:30,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:30,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 16:27:30,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:30,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:27:30,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:30,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 16:27:30,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:30,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:27:30,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:30,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 16:27:30,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:30,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-21 16:27:30,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:30,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:27:30,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:30,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:27:30,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:30,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:27:30,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:30,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 16:27:30,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:30,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:27:30,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:30,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:27:30,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:30,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 16:27:30,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:30,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 16:27:30,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:30,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:27:30,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:30,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-08-21 16:27:30,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:30,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:27:30,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:30,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-08-21 16:27:30,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:30,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:27:30,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:30,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:27:30,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:30,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:27:30,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:30,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:27:30,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:30,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-08-21 16:27:30,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:30,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2020-08-21 16:27:30,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:30,428 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 90 proven. 36 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2020-08-21 16:27:30,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [459007358] [2020-08-21 16:27:30,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:27:30,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 16:27:30,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842522468] [2020-08-21 16:27:30,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 16:27:30,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:27:30,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 16:27:30,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-21 16:27:30,431 INFO L87 Difference]: Start difference. First operand 2317 states and 2705 transitions. Second operand 16 states. [2020-08-21 16:27:30,996 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:27:31,310 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 16:27:31,606 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 16:27:31,838 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 16:27:32,514 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:27:33,460 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:27:33,764 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:27:34,009 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:27:34,592 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191