/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --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_product43.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 19:39:54,202 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 19:39:54,206 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 19:39:54,232 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 19:39:54,233 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 19:39:54,234 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 19:39:54,235 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 19:39:54,237 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 19:39:54,238 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 19:39:54,239 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 19:39:54,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 19:39:54,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 19:39:54,241 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 19:39:54,242 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 19:39:54,243 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 19:39:54,244 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 19:39:54,245 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 19:39:54,246 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 19:39:54,248 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 19:39:54,250 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 19:39:54,252 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 19:39:54,253 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 19:39:54,254 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 19:39:54,255 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 19:39:54,257 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 19:39:54,258 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 19:39:54,258 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 19:39:54,259 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 19:39:54,259 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 19:39:54,260 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 19:39:54,261 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 19:39:54,261 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 19:39:54,262 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 19:39:54,263 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 19:39:54,264 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 19:39:54,264 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 19:39:54,264 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 19:39:54,265 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 19:39:54,265 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 19:39:54,266 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 19:39:54,266 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 19:39:54,267 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 19:39:54,289 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 19:39:54,290 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 19:39:54,295 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 19:39:54,295 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 19:39:54,295 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 19:39:54,296 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 19:39:54,296 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 19:39:54,296 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 19:39:54,296 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 19:39:54,296 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 19:39:54,296 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 19:39:54,297 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 19:39:54,297 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 19:39:54,297 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 19:39:54,297 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 19:39:54,297 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 19:39:54,297 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 19:39:54,298 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 19:39:54,298 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 19:39:54,298 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 19:39:54,298 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 19:39:54,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 19:39:54,298 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 19:39:54,299 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 19:39:54,299 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 19:39:54,299 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 19:39:54,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 19:39:54,299 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 19:39:54,299 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 19:39:54,300 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; [2020-08-21 19:39:54,601 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 19:39:54,615 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 19:39:54,618 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 19:39:54,620 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 19:39:54,621 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 19:39:54,621 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product43.cil.c [2020-08-21 19:39:54,696 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d50a858f7/96422960dbb94acdabb6d4fb5a697ed0/FLAG520c30dcf [2020-08-21 19:39:55,334 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 19:39:55,335 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product43.cil.c [2020-08-21 19:39:55,350 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d50a858f7/96422960dbb94acdabb6d4fb5a697ed0/FLAG520c30dcf [2020-08-21 19:39:55,577 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d50a858f7/96422960dbb94acdabb6d4fb5a697ed0 [2020-08-21 19:39:55,588 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 19:39:55,591 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 19:39:55,593 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 19:39:55,593 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 19:39:55,597 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 19:39:55,599 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:39:55" (1/1) ... [2020-08-21 19:39:55,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23f46d75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:39:55, skipping insertion in model container [2020-08-21 19:39:55,603 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:39:55" (1/1) ... [2020-08-21 19:39:55,614 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 19:39:55,682 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 19:39:56,113 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:39:56,137 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 19:39:56,210 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:39:56,245 INFO L208 MainTranslator]: Completed translation [2020-08-21 19:39:56,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:39:56 WrapperNode [2020-08-21 19:39:56,245 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 19:39:56,246 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 19:39:56,246 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 19:39:56,246 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 19:39:56,259 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:39:56" (1/1) ... [2020-08-21 19:39:56,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:39:56" (1/1) ... [2020-08-21 19:39:56,278 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:39:56" (1/1) ... [2020-08-21 19:39:56,279 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:39:56" (1/1) ... [2020-08-21 19:39:56,311 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:39:56" (1/1) ... [2020-08-21 19:39:56,322 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:39:56" (1/1) ... [2020-08-21 19:39:56,328 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:39:56" (1/1) ... [2020-08-21 19:39:56,337 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 19:39:56,337 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 19:39:56,337 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 19:39:56,338 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 19:39:56,339 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:39:56" (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 19:39:56,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 19:39:56,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 19:39:56,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 19:39:56,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 19:39:56,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 19:39:56,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 19:39:56,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 19:39:56,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 19:39:56,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 19:39:56,425 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 19:39:56,426 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 19:39:56,426 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 19:39:56,426 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 19:39:56,426 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 19:39:56,426 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 19:39:56,427 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 19:39:56,427 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 19:39:56,427 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 19:39:56,427 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-21 19:39:56,428 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 19:39:56,428 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 19:39:56,428 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 19:39:56,428 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 19:39:56,428 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 19:39:56,428 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 19:39:56,429 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 19:39:56,429 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 19:39:56,430 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 19:39:56,430 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 19:39:56,430 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 19:39:56,430 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 19:39:56,430 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 19:39:56,430 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 19:39:56,430 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-21 19:39:56,431 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-21 19:39:56,431 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-21 19:39:56,431 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 19:39:56,431 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 19:39:56,431 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 19:39:56,431 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 19:39:56,431 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 19:39:56,432 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 19:39:56,432 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 19:39:56,432 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 19:39:56,432 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 19:39:56,432 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 19:39:56,432 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 19:39:56,432 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 19:39:56,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 19:39:56,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 19:39:56,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 19:39:56,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 19:39:56,433 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 19:39:56,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 19:39:56,434 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 19:39:56,434 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 19:39:56,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 19:39:56,435 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 19:39:56,435 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 19:39:56,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 19:39:56,435 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 19:39:56,435 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 19:39:56,436 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 19:39:56,436 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 19:39:56,436 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 19:39:56,436 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 19:39:56,436 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 19:39:56,436 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 19:39:56,436 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-21 19:39:56,437 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 19:39:56,437 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 19:39:56,438 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 19:39:56,438 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 19:39:56,438 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 19:39:56,439 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 19:39:56,439 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 19:39:56,440 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 19:39:56,440 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 19:39:56,440 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 19:39:56,440 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 19:39:56,440 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 19:39:56,440 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 19:39:56,441 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 19:39:56,441 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-21 19:39:56,441 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-21 19:39:56,442 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 19:39:56,442 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 19:39:56,442 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 19:39:56,442 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-21 19:39:56,442 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 19:39:56,442 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 19:39:56,443 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 19:39:56,443 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 19:39:56,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 19:39:56,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 19:39:56,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 19:39:57,498 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 19:39:57,498 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 19:39:57,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:39:57 BoogieIcfgContainer [2020-08-21 19:39:57,504 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 19:39:57,505 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 19:39:57,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 19:39:57,509 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 19:39:57,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 07:39:55" (1/3) ... [2020-08-21 19:39:57,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fea7931 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:39:57, skipping insertion in model container [2020-08-21 19:39:57,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:39:56" (2/3) ... [2020-08-21 19:39:57,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fea7931 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:39:57, skipping insertion in model container [2020-08-21 19:39:57,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:39:57" (3/3) ... [2020-08-21 19:39:57,513 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product43.cil.c [2020-08-21 19:39:57,523 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 19:39:57,532 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 19:39:57,546 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 19:39:57,572 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 19:39:57,573 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 19:39:57,573 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 19:39:57,573 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 19:39:57,573 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 19:39:57,574 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 19:39:57,574 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 19:39:57,574 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 19:39:57,597 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states. [2020-08-21 19:39:57,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 19:39:57,608 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:39:57,609 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 19:39:57,610 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:39:57,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:39:57,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1951083148, now seen corresponding path program 1 times [2020-08-21 19:39:57,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:39:57,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1257405878] [2020-08-21 19:39:57,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:39:57,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:58,255 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:39:58,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:39:58,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:58,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:39:58,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:58,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:39:58,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:58,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:39:58,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:58,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:39:58,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:58,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 19:39:58,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:58,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 19:39:58,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:58,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:39:58,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:58,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 19:39:58,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:58,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 19:39:58,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:39:58,367 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 19:39:58,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1257405878] [2020-08-21 19:39:58,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:39:58,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 19:39:58,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230791278] [2020-08-21 19:39:58,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 19:39:58,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:39:58,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 19:39:58,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 19:39:58,394 INFO L87 Difference]: Start difference. First operand 182 states. Second operand 4 states. [2020-08-21 19:39:59,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:39:59,455 INFO L93 Difference]: Finished difference Result 308 states and 391 transitions. [2020-08-21 19:39:59,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 19:39:59,457 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-21 19:39:59,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:39:59,472 INFO L225 Difference]: With dead ends: 308 [2020-08-21 19:39:59,472 INFO L226 Difference]: Without dead ends: 170 [2020-08-21 19:39:59,478 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 19:39:59,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-08-21 19:39:59,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 139. [2020-08-21 19:39:59,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-08-21 19:39:59,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 161 transitions. [2020-08-21 19:39:59,585 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 161 transitions. Word has length 59 [2020-08-21 19:39:59,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:39:59,586 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 161 transitions. [2020-08-21 19:39:59,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 19:39:59,586 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 161 transitions. [2020-08-21 19:39:59,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-21 19:39:59,597 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:39:59,597 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 19:39:59,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 19:39:59,598 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:39:59,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:39:59,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1220523940, now seen corresponding path program 1 times [2020-08-21 19:39:59,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:39:59,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662998232] [2020-08-21 19:39:59,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:39:59,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:00,001 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:40:00,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:00,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:00,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:40:00,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:00,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:40:00,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:00,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:40:00,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:00,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:40:00,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:00,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 19:40:00,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:00,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 19:40:00,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:00,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:00,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:00,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 19:40:00,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:00,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 19:40:00,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:00,056 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 19:40:00,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662998232] [2020-08-21 19:40:00,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:40:00,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 19:40:00,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162349429] [2020-08-21 19:40:00,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 19:40:00,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:40:00,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 19:40:00,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 19:40:00,060 INFO L87 Difference]: Start difference. First operand 139 states and 161 transitions. Second operand 5 states. [2020-08-21 19:40:00,491 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:40:01,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:40:01,388 INFO L93 Difference]: Finished difference Result 244 states and 293 transitions. [2020-08-21 19:40:01,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 19:40:01,389 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-21 19:40:01,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:40:01,392 INFO L225 Difference]: With dead ends: 244 [2020-08-21 19:40:01,392 INFO L226 Difference]: Without dead ends: 160 [2020-08-21 19:40:01,394 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 19:40:01,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-21 19:40:01,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 130. [2020-08-21 19:40:01,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-08-21 19:40:01,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 149 transitions. [2020-08-21 19:40:01,437 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 149 transitions. Word has length 60 [2020-08-21 19:40:01,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:40:01,437 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 149 transitions. [2020-08-21 19:40:01,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 19:40:01,438 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 149 transitions. [2020-08-21 19:40:01,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-21 19:40:01,439 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:40:01,439 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] [2020-08-21 19:40:01,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 19:40:01,440 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:40:01,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:40:01,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1125066517, now seen corresponding path program 1 times [2020-08-21 19:40:01,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:40:01,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758171667] [2020-08-21 19:40:01,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:40:01,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:01,781 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:40:01,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:01,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:01,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:40:01,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:01,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:40:01,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:01,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:40:01,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:01,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:40:01,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:01,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 19:40:01,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:01,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 19:40:01,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:01,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:01,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:01,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 19:40:01,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:01,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 19:40:01,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:01,902 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 19:40:01,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758171667] [2020-08-21 19:40:01,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:40:01,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 19:40:01,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796958573] [2020-08-21 19:40:01,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 19:40:01,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:40:01,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 19:40:01,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 19:40:01,905 INFO L87 Difference]: Start difference. First operand 130 states and 149 transitions. Second operand 9 states. [2020-08-21 19:40:02,291 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:40:02,657 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:40:02,903 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:40:03,133 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:40:04,040 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:40:05,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:40:05,670 INFO L93 Difference]: Finished difference Result 435 states and 529 transitions. [2020-08-21 19:40:05,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 19:40:05,671 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-21 19:40:05,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:40:05,677 INFO L225 Difference]: With dead ends: 435 [2020-08-21 19:40:05,677 INFO L226 Difference]: Without dead ends: 333 [2020-08-21 19:40:05,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-21 19:40:05,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-08-21 19:40:05,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 268. [2020-08-21 19:40:05,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-08-21 19:40:05,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 318 transitions. [2020-08-21 19:40:05,749 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 318 transitions. Word has length 64 [2020-08-21 19:40:05,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:40:05,749 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 318 transitions. [2020-08-21 19:40:05,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 19:40:05,750 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 318 transitions. [2020-08-21 19:40:05,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-21 19:40:05,751 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:40:05,752 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 19:40:05,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 19:40:05,752 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:40:05,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:40:05,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1836372268, now seen corresponding path program 1 times [2020-08-21 19:40:05,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:40:05,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1550659503] [2020-08-21 19:40:05,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:40:05,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:06,075 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:40:06,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:06,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:06,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:40:06,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:06,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:40:06,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:06,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:40:06,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:06,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:40:06,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:06,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 19:40:06,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:06,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 19:40:06,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:06,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 19:40:06,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:06,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:06,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:06,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 19:40:06,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:06,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 19:40:06,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:06,207 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 19:40:06,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1550659503] [2020-08-21 19:40:06,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:40:06,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 19:40:06,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353660662] [2020-08-21 19:40:06,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 19:40:06,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:40:06,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 19:40:06,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 19:40:06,210 INFO L87 Difference]: Start difference. First operand 268 states and 318 transitions. Second operand 9 states. [2020-08-21 19:40:06,600 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:40:07,289 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:40:08,193 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:40:08,423 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:40:08,719 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:40:08,987 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:40:09,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:40:09,430 INFO L93 Difference]: Finished difference Result 679 states and 862 transitions. [2020-08-21 19:40:09,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 19:40:09,430 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-21 19:40:09,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:40:09,437 INFO L225 Difference]: With dead ends: 679 [2020-08-21 19:40:09,437 INFO L226 Difference]: Without dead ends: 439 [2020-08-21 19:40:09,441 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 19:40:09,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-08-21 19:40:09,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 379. [2020-08-21 19:40:09,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2020-08-21 19:40:09,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 451 transitions. [2020-08-21 19:40:09,533 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 451 transitions. Word has length 70 [2020-08-21 19:40:09,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:40:09,533 INFO L479 AbstractCegarLoop]: Abstraction has 379 states and 451 transitions. [2020-08-21 19:40:09,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 19:40:09,534 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 451 transitions. [2020-08-21 19:40:09,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-08-21 19:40:09,536 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:40:09,536 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, 1, 1, 1, 1, 1] [2020-08-21 19:40:09,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 19:40:09,537 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:40:09,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:40:09,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1329110427, now seen corresponding path program 1 times [2020-08-21 19:40:09,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:40:09,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [856690314] [2020-08-21 19:40:09,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:40:09,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:09,799 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:40:09,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:09,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:09,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:40:09,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:09,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:40:09,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:09,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:40:09,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:09,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:40:09,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:09,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 19:40:09,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:09,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 19:40:09,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:09,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:09,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:09,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 19:40:09,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:09,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:09,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:09,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:09,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:09,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:40:09,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:09,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:09,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:09,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:09,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:09,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:40:09,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:09,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 19:40:09,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:09,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 19:40:09,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:09,986 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 19:40:09,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [856690314] [2020-08-21 19:40:09,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:40:09,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 19:40:09,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236090535] [2020-08-21 19:40:09,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 19:40:09,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:40:09,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 19:40:09,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 19:40:09,989 INFO L87 Difference]: Start difference. First operand 379 states and 451 transitions. Second operand 9 states. [2020-08-21 19:40:10,428 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:40:11,411 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:40:11,660 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 19:40:11,969 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:40:12,230 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:40:13,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:40:13,533 INFO L93 Difference]: Finished difference Result 1185 states and 1563 transitions. [2020-08-21 19:40:13,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 19:40:13,534 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 102 [2020-08-21 19:40:13,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:40:13,543 INFO L225 Difference]: With dead ends: 1185 [2020-08-21 19:40:13,543 INFO L226 Difference]: Without dead ends: 834 [2020-08-21 19:40:13,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-21 19:40:13,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2020-08-21 19:40:13,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 717. [2020-08-21 19:40:13,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 717 states. [2020-08-21 19:40:13,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 858 transitions. [2020-08-21 19:40:13,707 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 858 transitions. Word has length 102 [2020-08-21 19:40:13,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:40:13,708 INFO L479 AbstractCegarLoop]: Abstraction has 717 states and 858 transitions. [2020-08-21 19:40:13,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 19:40:13,708 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 858 transitions. [2020-08-21 19:40:13,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-08-21 19:40:13,711 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:40:13,711 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, 1, 1, 1, 1, 1] [2020-08-21 19:40:13,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 19:40:13,711 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:40:13,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:40:13,712 INFO L82 PathProgramCache]: Analyzing trace with hash 359529404, now seen corresponding path program 1 times [2020-08-21 19:40:13,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:40:13,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1828295004] [2020-08-21 19:40:13,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:40:13,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:14,000 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:40:14,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:14,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:14,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:40:14,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:14,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:40:14,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:14,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:40:14,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:14,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:40:14,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:14,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 19:40:14,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:14,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 19:40:14,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:14,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:14,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:14,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 19:40:14,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:14,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:14,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:14,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:14,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:14,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:40:14,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:14,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:14,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:14,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:14,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:14,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:40:14,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:14,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 19:40:14,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:14,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 19:40:14,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:14,114 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 19:40:14,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1828295004] [2020-08-21 19:40:14,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:40:14,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 19:40:14,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506422620] [2020-08-21 19:40:14,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 19:40:14,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:40:14,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 19:40:14,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 19:40:14,117 INFO L87 Difference]: Start difference. First operand 717 states and 858 transitions. Second operand 9 states. [2020-08-21 19:40:15,126 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:40:15,370 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 19:40:15,632 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:40:15,874 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:40:16,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:40:16,514 INFO L93 Difference]: Finished difference Result 1536 states and 1964 transitions. [2020-08-21 19:40:16,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 19:40:16,515 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 102 [2020-08-21 19:40:16,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:40:16,521 INFO L225 Difference]: With dead ends: 1536 [2020-08-21 19:40:16,522 INFO L226 Difference]: Without dead ends: 847 [2020-08-21 19:40:16,524 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 19:40:16,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2020-08-21 19:40:16,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 737. [2020-08-21 19:40:16,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 737 states. [2020-08-21 19:40:16,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 878 transitions. [2020-08-21 19:40:16,687 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 878 transitions. Word has length 102 [2020-08-21 19:40:16,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:40:16,688 INFO L479 AbstractCegarLoop]: Abstraction has 737 states and 878 transitions. [2020-08-21 19:40:16,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 19:40:16,688 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 878 transitions. [2020-08-21 19:40:16,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-08-21 19:40:16,691 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:40:16,692 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, 1, 1, 1, 1, 1] [2020-08-21 19:40:16,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 19:40:16,693 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:40:16,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:40:16,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1689858438, now seen corresponding path program 1 times [2020-08-21 19:40:16,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:40:16,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079220080] [2020-08-21 19:40:16,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:40:16,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:17,008 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:40:17,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:17,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:17,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:40:17,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:17,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:40:17,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:17,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:40:17,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:17,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:40:17,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:17,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 19:40:17,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:17,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 19:40:17,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:17,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:17,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:17,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 19:40:17,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:17,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:17,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:17,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:17,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:17,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:40:17,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:17,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:17,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:17,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:17,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:17,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:40:17,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:17,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 19:40:17,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:17,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 19:40:17,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:17,168 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 19:40:17,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079220080] [2020-08-21 19:40:17,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:40:17,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 19:40:17,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246066522] [2020-08-21 19:40:17,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 19:40:17,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:40:17,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 19:40:17,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 19:40:17,177 INFO L87 Difference]: Start difference. First operand 737 states and 878 transitions. Second operand 11 states. [2020-08-21 19:40:17,710 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:40:17,963 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:40:18,212 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:40:18,963 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:40:19,320 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:40:19,576 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:40:20,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:40:20,450 INFO L93 Difference]: Finished difference Result 1360 states and 1702 transitions. [2020-08-21 19:40:20,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 19:40:20,451 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 102 [2020-08-21 19:40:20,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:40:20,457 INFO L225 Difference]: With dead ends: 1360 [2020-08-21 19:40:20,457 INFO L226 Difference]: Without dead ends: 651 [2020-08-21 19:40:20,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 19:40:20,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2020-08-21 19:40:20,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 578. [2020-08-21 19:40:20,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2020-08-21 19:40:20,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 674 transitions. [2020-08-21 19:40:20,638 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 674 transitions. Word has length 102 [2020-08-21 19:40:20,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:40:20,638 INFO L479 AbstractCegarLoop]: Abstraction has 578 states and 674 transitions. [2020-08-21 19:40:20,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 19:40:20,638 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 674 transitions. [2020-08-21 19:40:20,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-08-21 19:40:20,642 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:40:20,642 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:40:20,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 19:40:20,643 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:40:20,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:40:20,643 INFO L82 PathProgramCache]: Analyzing trace with hash -764679949, now seen corresponding path program 1 times [2020-08-21 19:40:20,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:40:20,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1495000543] [2020-08-21 19:40:20,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:40:20,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:21,016 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:40:21,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:21,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:21,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:40:21,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:21,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:40:21,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:21,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:40:21,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:21,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:40:21,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:21,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 19:40:21,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:21,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 19:40:21,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:21,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 19:40:21,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:21,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:21,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:21,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 19:40:21,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:21,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:21,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:21,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:21,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:21,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:40:21,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:21,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:21,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:21,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:21,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:21,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:40:21,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:21,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-21 19:40:21,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:21,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-21 19:40:21,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:21,200 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 19:40:21,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1495000543] [2020-08-21 19:40:21,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:40:21,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 19:40:21,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359505649] [2020-08-21 19:40:21,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 19:40:21,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:40:21,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 19:40:21,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-21 19:40:21,205 INFO L87 Difference]: Start difference. First operand 578 states and 674 transitions. Second operand 12 states. [2020-08-21 19:40:21,603 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:40:22,226 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:40:22,903 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:40:23,229 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:40:23,468 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 19:40:23,746 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:40:23,996 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:40:25,354 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:40:25,616 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:40:26,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:40:26,180 INFO L93 Difference]: Finished difference Result 1691 states and 2129 transitions. [2020-08-21 19:40:26,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-21 19:40:26,180 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 106 [2020-08-21 19:40:26,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:40:26,188 INFO L225 Difference]: With dead ends: 1691 [2020-08-21 19:40:26,189 INFO L226 Difference]: Without dead ends: 1313 [2020-08-21 19:40:26,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-21 19:40:26,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2020-08-21 19:40:26,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1197. [2020-08-21 19:40:26,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1197 states. [2020-08-21 19:40:26,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1399 transitions. [2020-08-21 19:40:26,387 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1399 transitions. Word has length 106 [2020-08-21 19:40:26,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:40:26,389 INFO L479 AbstractCegarLoop]: Abstraction has 1197 states and 1399 transitions. [2020-08-21 19:40:26,389 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 19:40:26,389 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1399 transitions. [2020-08-21 19:40:26,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-21 19:40:26,394 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:40:26,394 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:40:26,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 19:40:26,395 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:40:26,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:40:26,395 INFO L82 PathProgramCache]: Analyzing trace with hash -60868023, now seen corresponding path program 1 times [2020-08-21 19:40:26,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:40:26,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [533950072] [2020-08-21 19:40:26,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:40:26,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:26,730 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:40:26,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:26,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:26,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:40:26,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:26,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:40:26,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:26,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:40:26,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:26,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:40:26,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:26,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 19:40:26,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:26,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 19:40:26,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:26,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 19:40:26,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:26,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:26,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:26,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:26,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:26,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:40:26,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:26,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:26,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:26,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:26,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:26,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:40:26,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:26,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:26,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:26,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:26,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:26,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:40:26,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:26,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 19:40:26,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:26,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:26,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:26,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-21 19:40:26,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:26,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:26,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:26,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 19:40:26,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:26,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-21 19:40:26,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:26,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:26,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:26,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-21 19:40:26,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:26,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-21 19:40:26,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:26,985 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-08-21 19:40:26,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [533950072] [2020-08-21 19:40:26,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:40:26,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 19:40:26,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788994945] [2020-08-21 19:40:26,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 19:40:26,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:40:26,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 19:40:26,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-21 19:40:26,988 INFO L87 Difference]: Start difference. First operand 1197 states and 1399 transitions. Second operand 16 states. [2020-08-21 19:40:27,592 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 19:40:27,943 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 19:40:28,219 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 19:40:28,478 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 19:40:29,106 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:40:29,446 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:40:29,824 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 19:40:30,111 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 19:40:31,201 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:40:31,657 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:40:31,952 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:40:32,268 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 19:40:32,715 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 19:40:33,212 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 19:40:33,455 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:40:33,712 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 19:40:33,989 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 19:40:34,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:40:34,416 INFO L93 Difference]: Finished difference Result 2225 states and 2688 transitions. [2020-08-21 19:40:34,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-08-21 19:40:34,417 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 149 [2020-08-21 19:40:34,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:40:34,424 INFO L225 Difference]: With dead ends: 2225 [2020-08-21 19:40:34,425 INFO L226 Difference]: Without dead ends: 1222 [2020-08-21 19:40:34,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=548, Invalid=2002, Unknown=0, NotChecked=0, Total=2550 [2020-08-21 19:40:34,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2020-08-21 19:40:34,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1102. [2020-08-21 19:40:34,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1102 states. [2020-08-21 19:40:34,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1268 transitions. [2020-08-21 19:40:34,645 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1268 transitions. Word has length 149 [2020-08-21 19:40:34,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:40:34,646 INFO L479 AbstractCegarLoop]: Abstraction has 1102 states and 1268 transitions. [2020-08-21 19:40:34,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 19:40:34,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1268 transitions. [2020-08-21 19:40:34,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-08-21 19:40:34,654 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:40:34,659 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:40:34,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 19:40:34,660 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:40:34,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:40:34,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1576976523, now seen corresponding path program 1 times [2020-08-21 19:40:34,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:40:34,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348932010] [2020-08-21 19:40:34,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:40:34,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:35,004 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:40:35,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:35,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:35,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:40:35,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:35,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:40:35,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:35,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:40:35,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:35,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:40:35,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:35,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 19:40:35,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:35,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 19:40:35,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:35,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 19:40:35,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:35,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:35,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:35,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:35,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:35,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:40:35,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:35,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:35,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:35,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:35,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:40:35,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:35,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:35,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:35,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:35,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:35,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:40:35,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:35,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 19:40:35,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:35,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:35,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:35,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-21 19:40:35,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:35,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:35,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:35,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:35,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:35,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:40:35,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:35,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 19:40:35,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:35,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:35,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:35,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 19:40:35,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:35,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:35,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:35,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-08-21 19:40:35,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:35,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:35,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:35,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:35,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:35,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:40:35,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:35,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 19:40:35,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:35,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:35,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:35,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 19:40:35,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:35,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:35,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:35,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-21 19:40:35,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:35,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:35,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:35,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-21 19:40:35,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:35,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:35,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:35,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:35,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:35,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:40:35,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:35,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:35,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:35,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-21 19:40:35,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:35,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:35,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:35,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-08-21 19:40:35,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:35,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:35,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:35,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:35,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:35,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:40:35,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:35,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:35,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:35,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:35,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:35,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:40:35,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:35,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-08-21 19:40:35,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:35,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-08-21 19:40:35,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:35,563 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 104 proven. 48 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2020-08-21 19:40:35,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348932010] [2020-08-21 19:40:35,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:40:35,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 19:40:35,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486636176] [2020-08-21 19:40:35,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 19:40:35,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:40:35,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 19:40:35,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2020-08-21 19:40:35,569 INFO L87 Difference]: Start difference. First operand 1102 states and 1268 transitions. Second operand 16 states. [2020-08-21 19:40:37,463 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:40:37,755 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 19:40:38,022 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 19:40:38,272 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:40:39,437 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 19:40:41,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:40:41,173 INFO L93 Difference]: Finished difference Result 3031 states and 3632 transitions. [2020-08-21 19:40:41,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-21 19:40:41,174 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 302 [2020-08-21 19:40:41,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:40:41,185 INFO L225 Difference]: With dead ends: 3031 [2020-08-21 19:40:41,185 INFO L226 Difference]: Without dead ends: 1752 [2020-08-21 19:40:41,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 111 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=333, Invalid=1073, Unknown=0, NotChecked=0, Total=1406 [2020-08-21 19:40:41,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1752 states. [2020-08-21 19:40:41,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1752 to 1430. [2020-08-21 19:40:41,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1430 states. [2020-08-21 19:40:41,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 1674 transitions. [2020-08-21 19:40:41,524 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 1674 transitions. Word has length 302 [2020-08-21 19:40:41,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:40:41,525 INFO L479 AbstractCegarLoop]: Abstraction has 1430 states and 1674 transitions. [2020-08-21 19:40:41,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 19:40:41,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 1674 transitions. [2020-08-21 19:40:41,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-08-21 19:40:41,539 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:40:41,540 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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 19:40:41,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 19:40:41,540 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:40:41,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:40:41,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1865964208, now seen corresponding path program 1 times [2020-08-21 19:40:41,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:40:41,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285987354] [2020-08-21 19:40:41,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:40:41,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:41,868 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:40:41,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:41,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:41,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:40:41,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:41,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:40:41,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:41,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:40:41,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:41,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:40:41,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:41,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 19:40:41,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:41,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 19:40:41,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:41,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 19:40:41,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:41,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:41,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:41,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:41,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:41,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:40:41,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:41,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:41,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:41,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:41,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:41,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:40:41,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:41,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:41,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:41,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:41,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:41,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:40:41,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:41,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 19:40:41,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:41,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:41,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:41,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-21 19:40:42,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:42,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:42,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:42,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:42,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:42,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:40:42,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:42,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 19:40:42,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:42,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:42,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:42,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 19:40:42,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:42,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:42,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:42,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 19:40:42,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:42,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-08-21 19:40:42,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:42,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:42,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:42,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:42,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:42,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:40:42,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:42,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 19:40:42,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:42,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:42,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:42,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 19:40:42,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:42,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:42,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:42,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-08-21 19:40:42,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:42,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:42,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:42,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-08-21 19:40:42,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:42,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:42,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:42,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:42,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:42,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:40:42,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:42,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:42,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:42,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-08-21 19:40:42,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:42,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:42,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:42,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-21 19:40:42,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:42,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:42,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:42,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:42,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:42,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:40:42,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:42,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:42,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:42,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:42,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:42,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:40:42,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:42,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-08-21 19:40:42,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:42,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-08-21 19:40:42,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:42,346 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 111 proven. 44 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2020-08-21 19:40:42,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1285987354] [2020-08-21 19:40:42,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:40:42,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-21 19:40:42,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514583848] [2020-08-21 19:40:42,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-21 19:40:42,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:40:42,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-21 19:40:42,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-08-21 19:40:42,350 INFO L87 Difference]: Start difference. First operand 1430 states and 1674 transitions. Second operand 17 states. [2020-08-21 19:40:42,985 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:40:43,307 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 19:40:43,614 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 19:40:43,864 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 19:40:44,519 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:40:45,485 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:40:45,760 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:40:46,275 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:40:47,005 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:40:47,664 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:40:47,934 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:40:48,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:40:48,637 INFO L93 Difference]: Finished difference Result 2555 states and 3056 transitions. [2020-08-21 19:40:48,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-08-21 19:40:48,638 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 308 [2020-08-21 19:40:48,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:40:48,647 INFO L225 Difference]: With dead ends: 2555 [2020-08-21 19:40:48,647 INFO L226 Difference]: Without dead ends: 1457 [2020-08-21 19:40:48,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=370, Invalid=1436, Unknown=0, NotChecked=0, Total=1806 [2020-08-21 19:40:48,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2020-08-21 19:40:48,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 1403. [2020-08-21 19:40:48,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1403 states. [2020-08-21 19:40:48,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1403 states to 1403 states and 1626 transitions. [2020-08-21 19:40:48,941 INFO L78 Accepts]: Start accepts. Automaton has 1403 states and 1626 transitions. Word has length 308 [2020-08-21 19:40:48,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:40:48,945 INFO L479 AbstractCegarLoop]: Abstraction has 1403 states and 1626 transitions. [2020-08-21 19:40:48,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-21 19:40:48,945 INFO L276 IsEmpty]: Start isEmpty. Operand 1403 states and 1626 transitions. [2020-08-21 19:40:48,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-08-21 19:40:48,955 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:40:48,955 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-08-21 19:40:48,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 19:40:48,956 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:40:48,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:40:48,956 INFO L82 PathProgramCache]: Analyzing trace with hash 2055130084, now seen corresponding path program 1 times [2020-08-21 19:40:48,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:40:48,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1056946288] [2020-08-21 19:40:48,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:40:49,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,242 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:40:49,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:49,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:40:49,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:40:49,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:40:49,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:40:49,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 19:40:49,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 19:40:49,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 19:40:49,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:49,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:49,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:40:49,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:49,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:49,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:40:49,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:49,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:49,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:40:49,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 19:40:49,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:49,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-21 19:40:49,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:49,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:49,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:40:49,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 19:40:49,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:49,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 19:40:49,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:49,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 19:40:49,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-08-21 19:40:49,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:49,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:49,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:40:49,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 19:40:49,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:49,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 19:40:49,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:49,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-08-21 19:40:49,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:49,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-08-21 19:40:49,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:49,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:49,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 19:40:49,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:49,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-08-21 19:40:49,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:40:49,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-08-21 19:40:49,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:40:49,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:49,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:40:49,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:49,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:40:49,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:40:49,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-08-21 19:40:49,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-08-21 19:40:49,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:40:49,533 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 82 proven. 4 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2020-08-21 19:40:49,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1056946288] [2020-08-21 19:40:49,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:40:49,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-21 19:40:49,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037045729] [2020-08-21 19:40:49,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 19:40:49,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:40:49,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 19:40:49,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-21 19:40:49,536 INFO L87 Difference]: Start difference. First operand 1403 states and 1626 transitions. Second operand 9 states. [2020-08-21 19:40:50,372 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:40:51,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:40:51,691 INFO L93 Difference]: Finished difference Result 1737 states and 2054 transitions. [2020-08-21 19:40:51,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-21 19:40:51,692 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 309 [2020-08-21 19:40:51,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:40:51,694 INFO L225 Difference]: With dead ends: 1737 [2020-08-21 19:40:51,694 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 19:40:51,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=145, Invalid=317, Unknown=0, NotChecked=0, Total=462 [2020-08-21 19:40:51,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 19:40:51,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 19:40:51,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 19:40:51,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 19:40:51,700 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 309 [2020-08-21 19:40:51,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:40:51,700 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 19:40:51,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 19:40:51,700 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 19:40:51,701 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 19:40:51,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 19:40:51,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 19:40:52,885 WARN L193 SmtUtils]: Spent 665.00 ms on a formula simplification. DAG size of input: 312 DAG size of output: 255