/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_spec3_product42.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 19:35:35,259 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 19:35:35,265 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 19:35:35,300 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 19:35:35,301 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 19:35:35,310 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 19:35:35,313 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 19:35:35,317 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 19:35:35,319 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 19:35:35,322 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 19:35:35,323 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 19:35:35,325 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 19:35:35,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 19:35:35,328 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 19:35:35,330 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 19:35:35,332 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 19:35:35,333 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 19:35:35,334 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 19:35:35,336 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 19:35:35,345 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 19:35:35,347 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 19:35:35,348 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 19:35:35,349 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 19:35:35,350 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 19:35:35,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 19:35:35,362 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 19:35:35,362 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 19:35:35,365 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 19:35:35,366 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 19:35:35,366 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 19:35:35,367 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 19:35:35,376 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 19:35:35,379 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 19:35:35,381 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 19:35:35,382 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 19:35:35,383 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 19:35:35,384 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 19:35:35,384 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 19:35:35,385 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 19:35:35,386 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 19:35:35,386 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 19:35:35,387 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 19:35:35,414 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 19:35:35,414 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 19:35:35,415 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 19:35:35,416 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 19:35:35,416 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 19:35:35,416 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 19:35:35,416 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 19:35:35,417 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 19:35:35,417 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 19:35:35,417 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 19:35:35,417 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 19:35:35,417 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 19:35:35,417 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 19:35:35,418 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 19:35:35,418 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 19:35:35,418 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 19:35:35,418 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 19:35:35,418 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 19:35:35,419 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 19:35:35,419 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 19:35:35,419 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 19:35:35,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 19:35:35,419 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 19:35:35,420 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 19:35:35,420 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 19:35:35,420 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 19:35:35,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 19:35:35,420 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 19:35:35,420 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 19:35:35,421 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 19:35:35,737 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 19:35:35,749 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 19:35:35,752 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 19:35:35,754 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 19:35:35,754 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 19:35:35,755 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product42.cil.c [2020-08-21 19:35:35,833 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d283c435b/9d414633bbaf4e80bf6f0e1b72634ed6/FLAGae452f4b4 [2020-08-21 19:35:36,376 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 19:35:36,377 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product42.cil.c [2020-08-21 19:35:36,391 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d283c435b/9d414633bbaf4e80bf6f0e1b72634ed6/FLAGae452f4b4 [2020-08-21 19:35:36,677 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d283c435b/9d414633bbaf4e80bf6f0e1b72634ed6 [2020-08-21 19:35:36,687 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 19:35:36,688 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 19:35:36,689 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 19:35:36,689 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 19:35:36,693 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 19:35:36,694 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:35:36" (1/1) ... [2020-08-21 19:35:36,697 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53d96e6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:35:36, skipping insertion in model container [2020-08-21 19:35:36,698 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:35:36" (1/1) ... [2020-08-21 19:35:36,706 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 19:35:36,751 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 19:35:37,098 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:35:37,111 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 19:35:37,299 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:35:37,335 INFO L208 MainTranslator]: Completed translation [2020-08-21 19:35:37,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:35:37 WrapperNode [2020-08-21 19:35:37,336 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 19:35:37,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 19:35:37,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 19:35:37,337 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 19:35:37,350 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:35:37" (1/1) ... [2020-08-21 19:35:37,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:35:37" (1/1) ... [2020-08-21 19:35:37,369 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:35:37" (1/1) ... [2020-08-21 19:35:37,370 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:35:37" (1/1) ... [2020-08-21 19:35:37,402 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:35:37" (1/1) ... [2020-08-21 19:35:37,422 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:35:37" (1/1) ... [2020-08-21 19:35:37,431 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:35:37" (1/1) ... [2020-08-21 19:35:37,455 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 19:35:37,455 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 19:35:37,456 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 19:35:37,456 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 19:35:37,459 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:35:37" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 19:35:37,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 19:35:37,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 19:35:37,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 19:35:37,539 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 19:35:37,539 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 19:35:37,540 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 19:35:37,540 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 19:35:37,540 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 19:35:37,540 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 19:35:37,540 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 19:35:37,540 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 19:35:37,540 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 19:35:37,541 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-21 19:35:37,541 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 19:35:37,541 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 19:35:37,541 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 19:35:37,541 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 19:35:37,541 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 19:35:37,542 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 19:35:37,542 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 19:35:37,542 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 19:35:37,542 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 19:35:37,542 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 19:35:37,542 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 19:35:37,543 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 19:35:37,543 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 19:35:37,543 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 19:35:37,543 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 19:35:37,543 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 19:35:37,543 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 19:35:37,544 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 19:35:37,544 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 19:35:37,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 19:35:37,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 19:35:37,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 19:35:37,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 19:35:37,545 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 19:35:37,545 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 19:35:37,545 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-21 19:35:37,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 19:35:37,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 19:35:37,546 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 19:35:37,546 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 19:35:37,546 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 19:35:37,546 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 19:35:37,546 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 19:35:37,546 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 19:35:37,546 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 19:35:37,547 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 19:35:37,547 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 19:35:37,547 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 19:35:37,547 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 19:35:37,547 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 19:35:37,547 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 19:35:37,547 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 19:35:37,548 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 19:35:37,548 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 19:35:37,548 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 19:35:37,548 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 19:35:37,548 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 19:35:37,548 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 19:35:37,549 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 19:35:37,549 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 19:35:37,549 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-21 19:35:37,549 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 19:35:37,549 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 19:35:37,549 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 19:35:37,549 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-21 19:35:37,550 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 19:35:37,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 19:35:37,550 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 19:35:37,550 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 19:35:37,550 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 19:35:37,550 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 19:35:37,550 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 19:35:37,551 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 19:35:37,551 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 19:35:37,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 19:35:37,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 19:35:37,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 19:35:37,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 19:35:37,552 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 19:35:37,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 19:35:37,552 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 19:35:37,552 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 19:35:37,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 19:35:37,552 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 19:35:37,553 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 19:35:37,553 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 19:35:37,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 19:35:37,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 19:35:37,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 19:35:38,631 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 19:35:38,631 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 19:35:38,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:35:38 BoogieIcfgContainer [2020-08-21 19:35:38,637 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 19:35:38,638 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 19:35:38,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 19:35:38,641 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 19:35:38,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 07:35:36" (1/3) ... [2020-08-21 19:35:38,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@228e6deb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:35:38, skipping insertion in model container [2020-08-21 19:35:38,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:35:37" (2/3) ... [2020-08-21 19:35:38,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@228e6deb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:35:38, skipping insertion in model container [2020-08-21 19:35:38,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:35:38" (3/3) ... [2020-08-21 19:35:38,645 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product42.cil.c [2020-08-21 19:35:38,655 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 19:35:38,663 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 19:35:38,677 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 19:35:38,698 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 19:35:38,699 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 19:35:38,699 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 19:35:38,699 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 19:35:38,699 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 19:35:38,699 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 19:35:38,699 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 19:35:38,700 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 19:35:38,722 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states. [2020-08-21 19:35:38,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 19:35:38,733 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:35:38,735 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:35:38,735 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:35:38,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:35:38,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1349332709, now seen corresponding path program 1 times [2020-08-21 19:35:38,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:35:38,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377547686] [2020-08-21 19:35:38,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:35:38,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:39,358 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:35:39,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:35:39,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:39,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:35:39,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:39,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:35:39,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:39,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:35:39,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:39,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:35:39,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:39,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 19:35:39,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:39,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 19:35:39,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:39,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 19:35:39,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:39,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:35:39,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1377547686] [2020-08-21 19:35:39,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:35:39,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 19:35:39,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624383438] [2020-08-21 19:35:39,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 19:35:39,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:35:39,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 19:35:39,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 19:35:39,479 INFO L87 Difference]: Start difference. First operand 170 states. Second operand 3 states. [2020-08-21 19:35:40,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:35:40,643 INFO L93 Difference]: Finished difference Result 296 states and 385 transitions. [2020-08-21 19:35:40,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 19:35:40,645 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-21 19:35:40,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:35:40,659 INFO L225 Difference]: With dead ends: 296 [2020-08-21 19:35:40,659 INFO L226 Difference]: Without dead ends: 160 [2020-08-21 19:35:40,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 19:35:40,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-21 19:35:40,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 127. [2020-08-21 19:35:40,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-08-21 19:35:40,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 148 transitions. [2020-08-21 19:35:40,752 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 148 transitions. Word has length 52 [2020-08-21 19:35:40,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:35:40,753 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 148 transitions. [2020-08-21 19:35:40,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 19:35:40,753 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 148 transitions. [2020-08-21 19:35:40,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-21 19:35:40,756 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:35:40,757 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:35:40,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 19:35:40,757 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:35:40,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:35:40,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1093164693, now seen corresponding path program 1 times [2020-08-21 19:35:40,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:35:40,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1164052157] [2020-08-21 19:35:40,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:35:40,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:41,120 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:35:41,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:35:41,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:41,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:35:41,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:41,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:35:41,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:41,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:35:41,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:41,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:35:41,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:41,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 19:35:41,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:41,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 19:35:41,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:41,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 19:35:41,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:41,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:35:41,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1164052157] [2020-08-21 19:35:41,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:35:41,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 19:35:41,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453729295] [2020-08-21 19:35:41,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 19:35:41,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:35:41,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 19:35:41,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 19:35:41,171 INFO L87 Difference]: Start difference. First operand 127 states and 148 transitions. Second operand 4 states. [2020-08-21 19:35:41,579 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:35:42,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:35:42,412 INFO L93 Difference]: Finished difference Result 225 states and 272 transitions. [2020-08-21 19:35:42,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 19:35:42,413 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-21 19:35:42,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:35:42,417 INFO L225 Difference]: With dead ends: 225 [2020-08-21 19:35:42,417 INFO L226 Difference]: Without dead ends: 144 [2020-08-21 19:35:42,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 19:35:42,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-21 19:35:42,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118. [2020-08-21 19:35:42,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-08-21 19:35:42,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 136 transitions. [2020-08-21 19:35:42,459 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 136 transitions. Word has length 53 [2020-08-21 19:35:42,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:35:42,460 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 136 transitions. [2020-08-21 19:35:42,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 19:35:42,460 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 136 transitions. [2020-08-21 19:35:42,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-21 19:35:42,463 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:35:42,463 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:35:42,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 19:35:42,463 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:35:42,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:35:42,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1756790423, now seen corresponding path program 1 times [2020-08-21 19:35:42,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:35:42,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1133540299] [2020-08-21 19:35:42,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:35:42,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:42,772 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:35:42,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:35:42,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:42,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:35:42,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:42,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:35:42,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:42,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:35:42,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:42,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:35:42,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:42,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 19:35:42,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:42,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 19:35:42,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:42,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 19:35:42,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:42,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:35:42,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1133540299] [2020-08-21 19:35:42,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:35:42,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 19:35:42,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270101574] [2020-08-21 19:35:42,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 19:35:42,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:35:42,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 19:35:42,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 19:35:42,871 INFO L87 Difference]: Start difference. First operand 118 states and 136 transitions. Second operand 8 states. [2020-08-21 19:35:43,234 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:35:43,550 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:35:43,803 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:35:44,035 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:35:45,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:35:45,162 INFO L93 Difference]: Finished difference Result 238 states and 290 transitions. [2020-08-21 19:35:45,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 19:35:45,168 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-21 19:35:45,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:35:45,171 INFO L225 Difference]: With dead ends: 238 [2020-08-21 19:35:45,171 INFO L226 Difference]: Without dead ends: 144 [2020-08-21 19:35:45,172 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 19:35:45,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-21 19:35:45,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118. [2020-08-21 19:35:45,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-08-21 19:35:45,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 135 transitions. [2020-08-21 19:35:45,211 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 135 transitions. Word has length 58 [2020-08-21 19:35:45,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:35:45,212 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 135 transitions. [2020-08-21 19:35:45,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 19:35:45,212 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 135 transitions. [2020-08-21 19:35:45,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-21 19:35:45,214 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:35:45,215 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:35:45,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 19:35:45,215 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:35:45,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:35:45,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1312872772, now seen corresponding path program 1 times [2020-08-21 19:35:45,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:35:45,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [375408594] [2020-08-21 19:35:45,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:35:45,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:45,525 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:35:45,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:35:45,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:45,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:35:45,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:45,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:35:45,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:45,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:35:45,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:45,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:35:45,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:45,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 19:35:45,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:45,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:35:45,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:45,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-21 19:35:45,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:45,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-21 19:35:45,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:45,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-21 19:35:45,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:45,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:35:45,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [375408594] [2020-08-21 19:35:45,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:35:45,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 19:35:45,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286380187] [2020-08-21 19:35:45,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 19:35:45,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:35:45,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 19:35:45,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 19:35:45,616 INFO L87 Difference]: Start difference. First operand 118 states and 135 transitions. Second operand 6 states. [2020-08-21 19:35:45,990 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:35:47,178 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:35:47,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:35:47,829 INFO L93 Difference]: Finished difference Result 338 states and 414 transitions. [2020-08-21 19:35:47,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 19:35:47,830 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-08-21 19:35:47,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:35:47,834 INFO L225 Difference]: With dead ends: 338 [2020-08-21 19:35:47,835 INFO L226 Difference]: Without dead ends: 244 [2020-08-21 19:35:47,836 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-21 19:35:47,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-08-21 19:35:47,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 201. [2020-08-21 19:35:47,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-08-21 19:35:47,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 230 transitions. [2020-08-21 19:35:47,884 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 230 transitions. Word has length 66 [2020-08-21 19:35:47,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:35:47,884 INFO L479 AbstractCegarLoop]: Abstraction has 201 states and 230 transitions. [2020-08-21 19:35:47,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 19:35:47,885 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 230 transitions. [2020-08-21 19:35:47,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-08-21 19:35:47,886 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:35:47,887 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:35:47,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 19:35:47,887 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:35:47,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:35:47,887 INFO L82 PathProgramCache]: Analyzing trace with hash 362669874, now seen corresponding path program 1 times [2020-08-21 19:35:47,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:35:47,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [555135076] [2020-08-21 19:35:47,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:35:47,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:48,221 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:35:48,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:35:48,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:48,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:35:48,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:48,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:35:48,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:48,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:35:48,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:48,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:35:48,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:48,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 19:35:48,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:48,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:35:48,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:48,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:35:48,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:48,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:35:48,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:48,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 19:35:48,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:48,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 19:35:48,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:48,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-21 19:35:48,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:48,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:35:48,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [555135076] [2020-08-21 19:35:48,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:35:48,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 19:35:48,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275412271] [2020-08-21 19:35:48,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 19:35:48,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:35:48,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 19:35:48,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 19:35:48,357 INFO L87 Difference]: Start difference. First operand 201 states and 230 transitions. Second operand 8 states. [2020-08-21 19:35:48,730 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:35:50,151 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:35:50,426 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:35:50,672 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:35:50,919 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:35:51,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:35:51,584 INFO L93 Difference]: Finished difference Result 555 states and 692 transitions. [2020-08-21 19:35:51,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 19:35:51,586 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2020-08-21 19:35:51,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:35:51,593 INFO L225 Difference]: With dead ends: 555 [2020-08-21 19:35:51,593 INFO L226 Difference]: Without dead ends: 378 [2020-08-21 19:35:51,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-21 19:35:51,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2020-08-21 19:35:51,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 335. [2020-08-21 19:35:51,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-08-21 19:35:51,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 389 transitions. [2020-08-21 19:35:51,664 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 389 transitions. Word has length 80 [2020-08-21 19:35:51,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:35:51,664 INFO L479 AbstractCegarLoop]: Abstraction has 335 states and 389 transitions. [2020-08-21 19:35:51,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 19:35:51,664 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 389 transitions. [2020-08-21 19:35:51,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-21 19:35:51,666 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:35:51,667 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:35:51,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 19:35:51,667 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:35:51,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:35:51,668 INFO L82 PathProgramCache]: Analyzing trace with hash 871612076, now seen corresponding path program 1 times [2020-08-21 19:35:51,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:35:51,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1612077421] [2020-08-21 19:35:51,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:35:51,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:51,975 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:35:51,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:35:51,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:52,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:35:52,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:52,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:35:52,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:52,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:35:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:52,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:35:52,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:52,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 19:35:52,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:52,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 19:35:52,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:52,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:35:52,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:52,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:35:52,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:52,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:35:52,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:52,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 19:35:52,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:52,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 19:35:52,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:52,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 19:35:52,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:52,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:35:52,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1612077421] [2020-08-21 19:35:52,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:35:52,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 19:35:52,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255968555] [2020-08-21 19:35:52,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 19:35:52,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:35:52,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 19:35:52,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-08-21 19:35:52,123 INFO L87 Difference]: Start difference. First operand 335 states and 389 transitions. Second operand 9 states. [2020-08-21 19:35:52,517 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:35:53,096 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:35:54,673 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:35:56,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:35:56,107 INFO L93 Difference]: Finished difference Result 815 states and 1039 transitions. [2020-08-21 19:35:56,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 19:35:56,108 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-08-21 19:35:56,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:35:56,115 INFO L225 Difference]: With dead ends: 815 [2020-08-21 19:35:56,115 INFO L226 Difference]: Without dead ends: 627 [2020-08-21 19:35:56,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-08-21 19:35:56,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-08-21 19:35:56,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 556. [2020-08-21 19:35:56,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-08-21 19:35:56,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 666 transitions. [2020-08-21 19:35:56,248 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 666 transitions. Word has length 84 [2020-08-21 19:35:56,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:35:56,249 INFO L479 AbstractCegarLoop]: Abstraction has 556 states and 666 transitions. [2020-08-21 19:35:56,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 19:35:56,249 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 666 transitions. [2020-08-21 19:35:56,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-21 19:35:56,251 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:35:56,251 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:35:56,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 19:35:56,251 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:35:56,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:35:56,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1201377837, now seen corresponding path program 1 times [2020-08-21 19:35:56,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:35:56,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [472048406] [2020-08-21 19:35:56,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:35:56,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:56,483 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:35:56,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:35:56,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:56,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:35:56,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:56,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:35:56,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:56,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:35:56,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:56,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:35:56,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:56,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 19:35:56,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:56,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 19:35:56,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:56,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:35:56,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:56,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:35:56,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:56,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:35:56,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:56,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 19:35:56,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:56,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 19:35:56,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:56,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 19:35:56,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:56,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:35:56,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [472048406] [2020-08-21 19:35:56,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:35:56,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 19:35:56,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811322895] [2020-08-21 19:35:56,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 19:35:56,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:35:56,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 19:35:56,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-21 19:35:56,660 INFO L87 Difference]: Start difference. First operand 556 states and 666 transitions. Second operand 8 states. [2020-08-21 19:35:57,530 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:35:57,758 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:35:58,009 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:35:58,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:35:58,855 INFO L93 Difference]: Finished difference Result 1006 states and 1249 transitions. [2020-08-21 19:35:58,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 19:35:58,856 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-08-21 19:35:58,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:35:58,860 INFO L225 Difference]: With dead ends: 1006 [2020-08-21 19:35:58,861 INFO L226 Difference]: Without dead ends: 601 [2020-08-21 19:35:58,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-21 19:35:58,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2020-08-21 19:35:58,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 556. [2020-08-21 19:35:58,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-08-21 19:35:58,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 665 transitions. [2020-08-21 19:35:58,957 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 665 transitions. Word has length 84 [2020-08-21 19:35:58,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:35:58,958 INFO L479 AbstractCegarLoop]: Abstraction has 556 states and 665 transitions. [2020-08-21 19:35:58,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 19:35:58,958 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 665 transitions. [2020-08-21 19:35:58,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-21 19:35:58,960 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:35:58,960 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:35:58,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 19:35:58,960 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:35:58,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:35:58,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1128991279, now seen corresponding path program 1 times [2020-08-21 19:35:58,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:35:58,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1588455532] [2020-08-21 19:35:58,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:35:58,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:59,220 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:35:59,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:35:59,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:59,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:35:59,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:59,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:35:59,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:59,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:35:59,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:59,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:35:59,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:59,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 19:35:59,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:59,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 19:35:59,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:59,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:35:59,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:59,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:35:59,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:59,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:35:59,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:59,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 19:35:59,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:59,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 19:35:59,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:59,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 19:35:59,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:59,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:35:59,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1588455532] [2020-08-21 19:35:59,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:35:59,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 19:35:59,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332668403] [2020-08-21 19:35:59,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 19:35:59,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:35:59,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 19:35:59,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-21 19:35:59,369 INFO L87 Difference]: Start difference. First operand 556 states and 665 transitions. Second operand 12 states. [2020-08-21 19:36:00,126 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:36:00,373 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:36:00,604 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:36:01,326 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:36:01,570 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:36:01,824 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:36:02,079 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:36:03,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:36:03,046 INFO L93 Difference]: Finished difference Result 1144 states and 1416 transitions. [2020-08-21 19:36:03,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 19:36:03,049 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2020-08-21 19:36:03,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:36:03,054 INFO L225 Difference]: With dead ends: 1144 [2020-08-21 19:36:03,054 INFO L226 Difference]: Without dead ends: 612 [2020-08-21 19:36:03,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-21 19:36:03,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2020-08-21 19:36:03,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 563. [2020-08-21 19:36:03,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2020-08-21 19:36:03,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 672 transitions. [2020-08-21 19:36:03,174 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 672 transitions. Word has length 84 [2020-08-21 19:36:03,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:36:03,175 INFO L479 AbstractCegarLoop]: Abstraction has 563 states and 672 transitions. [2020-08-21 19:36:03,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 19:36:03,175 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 672 transitions. [2020-08-21 19:36:03,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-08-21 19:36:03,181 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:36:03,181 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] [2020-08-21 19:36:03,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 19:36:03,182 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:36:03,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:36:03,182 INFO L82 PathProgramCache]: Analyzing trace with hash -482545033, now seen corresponding path program 1 times [2020-08-21 19:36:03,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:36:03,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1843454384] [2020-08-21 19:36:03,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:36:03,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:03,450 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:36:03,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:36:03,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:03,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:36:03,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:03,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:36:03,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:03,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:36:03,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:03,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:36:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:03,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 19:36:03,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:03,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 19:36:03,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:03,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:36:03,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:03,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:36:03,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:03,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:36:03,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:03,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:36:03,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:03,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:36:03,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:03,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 19:36:03,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:03,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 19:36:03,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:03,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 19:36:03,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:03,683 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 19:36:03,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1843454384] [2020-08-21 19:36:03,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:36:03,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 19:36:03,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171127533] [2020-08-21 19:36:03,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 19:36:03,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:36:03,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 19:36:03,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-21 19:36:03,686 INFO L87 Difference]: Start difference. First operand 563 states and 672 transitions. Second operand 12 states. [2020-08-21 19:36:04,156 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:36:04,884 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:36:05,714 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:36:05,999 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:36:06,282 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:36:06,551 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:36:06,837 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:36:07,087 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:36:07,547 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 191 [2020-08-21 19:36:07,796 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:36:08,082 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:36:08,374 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 19:36:10,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:36:10,317 INFO L93 Difference]: Finished difference Result 1664 states and 2066 transitions. [2020-08-21 19:36:10,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-21 19:36:10,318 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 96 [2020-08-21 19:36:10,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:36:10,326 INFO L225 Difference]: With dead ends: 1664 [2020-08-21 19:36:10,326 INFO L226 Difference]: Without dead ends: 1125 [2020-08-21 19:36:10,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=195, Invalid=797, Unknown=0, NotChecked=0, Total=992 [2020-08-21 19:36:10,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2020-08-21 19:36:10,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1062. [2020-08-21 19:36:10,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1062 states. [2020-08-21 19:36:10,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 1253 transitions. [2020-08-21 19:36:10,580 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 1253 transitions. Word has length 96 [2020-08-21 19:36:10,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:36:10,581 INFO L479 AbstractCegarLoop]: Abstraction has 1062 states and 1253 transitions. [2020-08-21 19:36:10,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 19:36:10,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 1253 transitions. [2020-08-21 19:36:10,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-08-21 19:36:10,584 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:36:10,585 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] [2020-08-21 19:36:10,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 19:36:10,585 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:36:10,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:36:10,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1334976659, now seen corresponding path program 1 times [2020-08-21 19:36:10,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:36:10,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [943225654] [2020-08-21 19:36:10,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:36:10,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:10,896 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:36:10,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:36:10,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:10,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:36:10,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:10,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:36:10,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:10,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:36:10,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:10,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:36:10,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:10,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 19:36:10,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:10,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 19:36:10,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:11,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 19:36:11,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:11,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:36:11,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:11,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:36:11,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:11,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:36:11,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:11,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:36:11,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:11,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:36:11,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:11,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 19:36:11,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:11,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-21 19:36:11,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:11,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-21 19:36:11,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:11,114 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 19:36:11,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [943225654] [2020-08-21 19:36:11,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:36:11,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-21 19:36:11,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110982160] [2020-08-21 19:36:11,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 19:36:11,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:36:11,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 19:36:11,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-08-21 19:36:11,120 INFO L87 Difference]: Start difference. First operand 1062 states and 1253 transitions. Second operand 14 states. [2020-08-21 19:36:12,059 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:36:12,376 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:36:12,605 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:36:13,191 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:36:13,974 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:36:14,302 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:36:14,856 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:36:15,116 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:36:15,366 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:36:17,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:36:17,143 INFO L93 Difference]: Finished difference Result 2205 states and 2747 transitions. [2020-08-21 19:36:17,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-21 19:36:17,146 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 100 [2020-08-21 19:36:17,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:36:17,153 INFO L225 Difference]: With dead ends: 2205 [2020-08-21 19:36:17,154 INFO L226 Difference]: Without dead ends: 1167 [2020-08-21 19:36:17,158 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=239, Invalid=817, Unknown=0, NotChecked=0, Total=1056 [2020-08-21 19:36:17,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2020-08-21 19:36:17,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 978. [2020-08-21 19:36:17,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 978 states. [2020-08-21 19:36:17,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1149 transitions. [2020-08-21 19:36:17,326 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1149 transitions. Word has length 100 [2020-08-21 19:36:17,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:36:17,327 INFO L479 AbstractCegarLoop]: Abstraction has 978 states and 1149 transitions. [2020-08-21 19:36:17,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-21 19:36:17,327 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1149 transitions. [2020-08-21 19:36:17,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-08-21 19:36:17,329 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:36:17,329 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] [2020-08-21 19:36:17,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 19:36:17,330 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:36:17,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:36:17,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1799494055, now seen corresponding path program 1 times [2020-08-21 19:36:17,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:36:17,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1609199206] [2020-08-21 19:36:17,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:36:17,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:17,720 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:36:17,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:36:17,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:17,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:36:17,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:17,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:36:17,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:17,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:36:17,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:17,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:36:17,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:17,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 19:36:17,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:17,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 19:36:17,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:17,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:36:17,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:17,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:36:17,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:17,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:36:17,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:17,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:36:17,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:17,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:36:17,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:17,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:36:17,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:17,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 19:36:17,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:17,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-21 19:36:17,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:17,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-21 19:36:17,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:17,948 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 19:36:17,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1609199206] [2020-08-21 19:36:17,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:36:17,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-21 19:36:17,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769897071] [2020-08-21 19:36:17,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 19:36:17,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:36:17,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 19:36:17,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-08-21 19:36:17,951 INFO L87 Difference]: Start difference. First operand 978 states and 1149 transitions. Second operand 13 states. [2020-08-21 19:36:18,656 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:36:18,888 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:36:19,111 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:36:20,167 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:36:20,667 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:36:20,985 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:36:21,251 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:36:22,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:36:22,002 INFO L93 Difference]: Finished difference Result 1688 states and 1988 transitions. [2020-08-21 19:36:22,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 19:36:22,002 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 100 [2020-08-21 19:36:22,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:36:22,003 INFO L225 Difference]: With dead ends: 1688 [2020-08-21 19:36:22,004 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 19:36:22,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2020-08-21 19:36:22,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 19:36:22,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 19:36:22,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 19:36:22,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 19:36:22,009 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 100 [2020-08-21 19:36:22,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:36:22,010 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 19:36:22,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 19:36:22,010 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 19:36:22,010 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 19:36:22,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 19:36:22,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 19:36:23,338 WARN L193 SmtUtils]: Spent 721.00 ms on a formula simplification. DAG size of input: 292 DAG size of output: 240 [2020-08-21 19:36:25,938 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 284 DAG size of output: 235 [2020-08-21 19:36:26,367 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 284 DAG size of output: 235 [2020-08-21 19:36:26,714 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 292 DAG size of output: 240 [2020-08-21 19:36:27,284 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 292 DAG size of output: 240 [2020-08-21 19:36:28,325 WARN L193 SmtUtils]: Spent 811.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 26 [2020-08-21 19:36:29,452 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 162 DAG size of output: 30 [2020-08-21 19:36:29,629 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 1 [2020-08-21 19:36:30,109 WARN L193 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 40 [2020-08-21 19:36:30,281 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 24 [2020-08-21 19:36:30,559 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 23 [2020-08-21 19:36:30,744 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 1 [2020-08-21 19:36:31,885 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 170 DAG size of output: 38 [2020-08-21 19:36:32,050 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 1 [2020-08-21 19:36:32,852 WARN L193 SmtUtils]: Spent 799.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 26 [2020-08-21 19:36:33,134 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 27 [2020-08-21 19:36:33,685 WARN L193 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 30 [2020-08-21 19:36:34,533 WARN L193 SmtUtils]: Spent 844.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 33