/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=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product54.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 15:39:16,303 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 15:39:16,306 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 15:39:16,345 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 15:39:16,346 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 15:39:16,355 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 15:39:16,357 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 15:39:16,361 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 15:39:16,363 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 15:39:16,366 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 15:39:16,367 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 15:39:16,368 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 15:39:16,368 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 15:39:16,371 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 15:39:16,373 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 15:39:16,374 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 15:39:16,376 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 15:39:16,377 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 15:39:16,378 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 15:39:16,386 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 15:39:16,388 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 15:39:16,389 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 15:39:16,390 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 15:39:16,391 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 15:39:16,403 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 15:39:16,404 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 15:39:16,408 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 15:39:16,409 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 15:39:16,409 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 15:39:16,410 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 15:39:16,410 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 15:39:16,417 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 15:39:16,417 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 15:39:16,418 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 15:39:16,419 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 15:39:16,419 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 15:39:16,420 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 15:39:16,420 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 15:39:16,420 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 15:39:16,423 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 15:39:16,423 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 15:39:16,425 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 15:39:16,465 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 15:39:16,465 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 15:39:16,467 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 15:39:16,467 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 15:39:16,467 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 15:39:16,468 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 15:39:16,468 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 15:39:16,468 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 15:39:16,468 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 15:39:16,469 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 15:39:16,470 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 15:39:16,470 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 15:39:16,470 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 15:39:16,471 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 15:39:16,471 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 15:39:16,471 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 15:39:16,471 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 15:39:16,472 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 15:39:16,472 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 15:39:16,472 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 15:39:16,472 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 15:39:16,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 15:39:16,473 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 15:39:16,473 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 15:39:16,473 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 15:39:16,473 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 15:39:16,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 15:39:16,474 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 15:39:16,474 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 15:39:16,474 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=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 15:39:16,812 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 15:39:16,824 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 15:39:16,828 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 15:39:16,829 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 15:39:16,830 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 15:39:16,830 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product54.cil.c [2020-08-21 15:39:16,888 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cdd77b863/91371b136d2144a2bdb933c5391143b1/FLAGfdc54e6d1 [2020-08-21 15:39:17,451 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 15:39:17,452 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product54.cil.c [2020-08-21 15:39:17,465 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cdd77b863/91371b136d2144a2bdb933c5391143b1/FLAGfdc54e6d1 [2020-08-21 15:39:17,708 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cdd77b863/91371b136d2144a2bdb933c5391143b1 [2020-08-21 15:39:17,718 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 15:39:17,719 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 15:39:17,720 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 15:39:17,721 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 15:39:17,724 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 15:39:17,725 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:39:17" (1/1) ... [2020-08-21 15:39:17,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f15c313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:39:17, skipping insertion in model container [2020-08-21 15:39:17,729 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:39:17" (1/1) ... [2020-08-21 15:39:17,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 15:39:17,785 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 15:39:18,232 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:39:18,260 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 15:39:18,348 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:39:18,386 INFO L208 MainTranslator]: Completed translation [2020-08-21 15:39:18,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:39:18 WrapperNode [2020-08-21 15:39:18,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 15:39:18,387 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 15:39:18,387 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 15:39:18,387 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 15:39:18,398 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:39:18" (1/1) ... [2020-08-21 15:39:18,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:39:18" (1/1) ... [2020-08-21 15:39:18,418 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:39:18" (1/1) ... [2020-08-21 15:39:18,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:39:18" (1/1) ... [2020-08-21 15:39:18,452 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:39:18" (1/1) ... [2020-08-21 15:39:18,465 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:39:18" (1/1) ... [2020-08-21 15:39:18,471 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:39:18" (1/1) ... [2020-08-21 15:39:18,479 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 15:39:18,480 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 15:39:18,480 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 15:39:18,480 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 15:39:18,481 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:39:18" (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 15:39:18,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 15:39:18,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 15:39:18,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 15:39:18,545 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-21 15:39:18,545 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-21 15:39:18,545 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-21 15:39:18,545 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 15:39:18,545 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 15:39:18,545 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 15:39:18,546 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 15:39:18,546 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 15:39:18,546 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 15:39:18,546 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 15:39:18,546 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 15:39:18,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 15:39:18,547 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 15:39:18,547 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 15:39:18,547 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 15:39:18,547 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 15:39:18,547 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 15:39:18,547 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 15:39:18,548 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 15:39:18,548 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 15:39:18,548 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 15:39:18,548 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 15:39:18,548 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 15:39:18,548 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 15:39:18,549 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 15:39:18,549 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 15:39:18,549 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 15:39:18,549 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 15:39:18,549 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 15:39:18,549 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 15:39:18,550 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 15:39:18,550 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 15:39:18,550 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 15:39:18,550 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 15:39:18,550 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 15:39:18,550 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 15:39:18,551 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 15:39:18,551 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 15:39:18,551 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 15:39:18,551 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 15:39:18,551 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 15:39:18,551 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 15:39:18,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 15:39:18,552 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 15:39:18,552 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 15:39:18,552 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 15:39:18,552 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 15:39:18,552 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-21 15:39:18,552 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-21 15:39:18,553 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-21 15:39:18,553 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 15:39:18,553 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 15:39:18,553 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 15:39:18,553 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 15:39:18,554 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 15:39:18,554 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 15:39:18,554 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 15:39:18,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 15:39:18,554 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 15:39:18,554 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 15:39:18,554 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 15:39:18,555 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 15:39:18,555 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 15:39:18,555 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 15:39:18,555 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 15:39:18,555 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 15:39:18,555 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 15:39:18,555 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 15:39:18,556 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 15:39:18,556 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 15:39:18,556 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 15:39:18,556 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 15:39:18,556 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 15:39:18,556 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 15:39:18,557 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 15:39:18,557 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 15:39:18,557 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 15:39:18,557 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 15:39:18,557 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 15:39:18,557 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 15:39:18,558 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 15:39:18,558 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 15:39:18,558 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 15:39:18,558 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 15:39:18,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 15:39:18,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 15:39:18,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 15:39:18,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 15:39:18,559 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 15:39:18,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 15:39:18,559 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 15:39:18,559 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 15:39:18,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 15:39:18,560 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 15:39:18,560 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 15:39:18,560 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 15:39:18,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 15:39:18,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 15:39:18,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 15:39:19,651 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 15:39:19,652 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 15:39:19,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:39:19 BoogieIcfgContainer [2020-08-21 15:39:19,657 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 15:39:19,659 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 15:39:19,659 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 15:39:19,662 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 15:39:19,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 03:39:17" (1/3) ... [2020-08-21 15:39:19,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2625d287 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:39:19, skipping insertion in model container [2020-08-21 15:39:19,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:39:18" (2/3) ... [2020-08-21 15:39:19,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2625d287 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:39:19, skipping insertion in model container [2020-08-21 15:39:19,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:39:19" (3/3) ... [2020-08-21 15:39:19,666 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product54.cil.c [2020-08-21 15:39:19,676 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 15:39:19,684 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 15:39:19,698 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 15:39:19,722 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 15:39:19,722 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 15:39:19,722 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 15:39:19,723 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 15:39:19,723 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 15:39:19,723 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 15:39:19,723 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 15:39:19,724 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 15:39:19,747 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states. [2020-08-21 15:39:19,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 15:39:19,758 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:39:19,760 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:39:19,760 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:39:19,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:39:19,767 INFO L82 PathProgramCache]: Analyzing trace with hash -404445524, now seen corresponding path program 1 times [2020-08-21 15:39:19,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:39:19,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581060323] [2020-08-21 15:39:19,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:39:20,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:20,430 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:39:20,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:20,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:20,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:39:20,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:20,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:39:20,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:20,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:39:20,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:20,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:39:20,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:20,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:39:20,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:20,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 15:39:20,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:20,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:20,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:20,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 15:39:20,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:20,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 15:39:20,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:20,569 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 15:39:20,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [581060323] [2020-08-21 15:39:20,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:39:20,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 15:39:20,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083670273] [2020-08-21 15:39:20,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 15:39:20,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:39:20,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 15:39:20,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 15:39:20,598 INFO L87 Difference]: Start difference. First operand 203 states. Second operand 4 states. [2020-08-21 15:39:21,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:39:21,839 INFO L93 Difference]: Finished difference Result 351 states and 448 transitions. [2020-08-21 15:39:21,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 15:39:21,841 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-21 15:39:21,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:39:21,857 INFO L225 Difference]: With dead ends: 351 [2020-08-21 15:39:21,857 INFO L226 Difference]: Without dead ends: 192 [2020-08-21 15:39:21,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 15:39:21,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-08-21 15:39:21,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 160. [2020-08-21 15:39:21,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-08-21 15:39:21,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 188 transitions. [2020-08-21 15:39:21,963 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 188 transitions. Word has length 59 [2020-08-21 15:39:21,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:39:21,964 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 188 transitions. [2020-08-21 15:39:21,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 15:39:21,964 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 188 transitions. [2020-08-21 15:39:21,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-21 15:39:21,968 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:39:21,968 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:39:21,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 15:39:21,969 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:39:21,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:39:21,969 INFO L82 PathProgramCache]: Analyzing trace with hash -315023676, now seen corresponding path program 1 times [2020-08-21 15:39:21,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:39:21,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1345580273] [2020-08-21 15:39:21,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:39:22,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:22,322 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:39:22,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:22,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:22,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:39:22,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:22,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:39:22,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:22,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:39:22,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:22,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:39:22,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:22,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:39:22,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:22,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 15:39:22,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:22,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:22,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:22,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 15:39:22,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:22,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 15:39:22,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:22,387 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 15:39:22,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1345580273] [2020-08-21 15:39:22,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:39:22,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 15:39:22,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753818903] [2020-08-21 15:39:22,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 15:39:22,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:39:22,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 15:39:22,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 15:39:22,391 INFO L87 Difference]: Start difference. First operand 160 states and 188 transitions. Second operand 5 states. [2020-08-21 15:39:22,879 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:39:23,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:39:23,966 INFO L93 Difference]: Finished difference Result 292 states and 356 transitions. [2020-08-21 15:39:23,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 15:39:23,967 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-21 15:39:23,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:39:23,971 INFO L225 Difference]: With dead ends: 292 [2020-08-21 15:39:23,972 INFO L226 Difference]: Without dead ends: 182 [2020-08-21 15:39:23,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 15:39:23,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-08-21 15:39:24,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 151. [2020-08-21 15:39:24,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-08-21 15:39:24,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 176 transitions. [2020-08-21 15:39:24,061 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 176 transitions. Word has length 60 [2020-08-21 15:39:24,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:39:24,061 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 176 transitions. [2020-08-21 15:39:24,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 15:39:24,061 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 176 transitions. [2020-08-21 15:39:24,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-21 15:39:24,074 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:39:24,075 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:39:24,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 15:39:24,075 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:39:24,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:39:24,075 INFO L82 PathProgramCache]: Analyzing trace with hash 649722396, now seen corresponding path program 1 times [2020-08-21 15:39:24,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:39:24,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [735757155] [2020-08-21 15:39:24,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:39:24,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:24,411 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:39:24,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:24,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:24,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:39:24,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:24,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:39:24,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:24,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:39:24,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:24,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:39:24,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:24,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:39:24,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:24,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 15:39:24,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:24,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:24,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:24,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 15:39:24,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:24,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 15:39:24,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:24,557 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 15:39:24,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [735757155] [2020-08-21 15:39:24,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:39:24,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 15:39:24,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612715885] [2020-08-21 15:39:24,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 15:39:24,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:39:24,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 15:39:24,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 15:39:24,560 INFO L87 Difference]: Start difference. First operand 151 states and 176 transitions. Second operand 9 states. [2020-08-21 15:39:24,939 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:39:25,291 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:39:25,548 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:39:25,789 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:39:27,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:39:27,288 INFO L93 Difference]: Finished difference Result 305 states and 375 transitions. [2020-08-21 15:39:27,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 15:39:27,290 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-21 15:39:27,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:39:27,293 INFO L225 Difference]: With dead ends: 305 [2020-08-21 15:39:27,293 INFO L226 Difference]: Without dead ends: 182 [2020-08-21 15:39:27,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-21 15:39:27,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-08-21 15:39:27,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 151. [2020-08-21 15:39:27,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-08-21 15:39:27,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 175 transitions. [2020-08-21 15:39:27,338 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 175 transitions. Word has length 65 [2020-08-21 15:39:27,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:39:27,338 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 175 transitions. [2020-08-21 15:39:27,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 15:39:27,339 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 175 transitions. [2020-08-21 15:39:27,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-21 15:39:27,341 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:39:27,341 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] [2020-08-21 15:39:27,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 15:39:27,341 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:39:27,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:39:27,342 INFO L82 PathProgramCache]: Analyzing trace with hash 2071838844, now seen corresponding path program 1 times [2020-08-21 15:39:27,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:39:27,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [423547473] [2020-08-21 15:39:27,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:39:27,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:27,703 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:39:27,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:27,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:27,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:39:27,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:27,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:39:27,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:27,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:39:27,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:27,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:39:27,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:27,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:39:27,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:27,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 15:39:27,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:27,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:27,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:27,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 15:39:27,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:27,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:27,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:27,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:27,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:27,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:27,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:27,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-21 15:39:27,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:27,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 15:39:27,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:27,805 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 15:39:27,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [423547473] [2020-08-21 15:39:27,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:39:27,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 15:39:27,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166979246] [2020-08-21 15:39:27,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 15:39:27,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:39:27,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 15:39:27,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 15:39:27,808 INFO L87 Difference]: Start difference. First operand 151 states and 175 transitions. Second operand 7 states. [2020-08-21 15:39:28,150 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:39:29,569 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:39:30,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:39:30,177 INFO L93 Difference]: Finished difference Result 415 states and 516 transitions. [2020-08-21 15:39:30,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 15:39:30,178 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 83 [2020-08-21 15:39:30,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:39:30,183 INFO L225 Difference]: With dead ends: 415 [2020-08-21 15:39:30,183 INFO L226 Difference]: Without dead ends: 292 [2020-08-21 15:39:30,186 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-21 15:39:30,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-08-21 15:39:30,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 246. [2020-08-21 15:39:30,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-08-21 15:39:30,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 280 transitions. [2020-08-21 15:39:30,263 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 280 transitions. Word has length 83 [2020-08-21 15:39:30,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:39:30,264 INFO L479 AbstractCegarLoop]: Abstraction has 246 states and 280 transitions. [2020-08-21 15:39:30,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 15:39:30,264 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 280 transitions. [2020-08-21 15:39:30,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-21 15:39:30,266 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:39:30,266 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:39:30,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 15:39:30,266 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:39:30,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:39:30,267 INFO L82 PathProgramCache]: Analyzing trace with hash 477615551, now seen corresponding path program 1 times [2020-08-21 15:39:30,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:39:30,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1946993375] [2020-08-21 15:39:30,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:39:30,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:30,572 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:39:30,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:30,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:30,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:39:30,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:30,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:39:30,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:30,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:39:30,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:30,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:39:30,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:30,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:39:30,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:30,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 15:39:30,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:30,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:30,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:30,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 15:39:30,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:30,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:30,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:30,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:30,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:30,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:30,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:30,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:30,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:30,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:39:30,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:30,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 15:39:30,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:30,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 15:39:30,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:30,708 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 15:39:30,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1946993375] [2020-08-21 15:39:30,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:39:30,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 15:39:30,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367006825] [2020-08-21 15:39:30,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 15:39:30,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:39:30,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 15:39:30,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 15:39:30,711 INFO L87 Difference]: Start difference. First operand 246 states and 280 transitions. Second operand 9 states. [2020-08-21 15:39:31,075 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:39:31,742 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:39:32,411 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:39:32,710 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:39:33,161 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:39:33,419 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:39:34,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:39:34,026 INFO L93 Difference]: Finished difference Result 509 states and 612 transitions. [2020-08-21 15:39:34,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 15:39:34,026 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 97 [2020-08-21 15:39:34,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:39:34,030 INFO L225 Difference]: With dead ends: 509 [2020-08-21 15:39:34,030 INFO L226 Difference]: Without dead ends: 291 [2020-08-21 15:39:34,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 15:39:34,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-08-21 15:39:34,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 245. [2020-08-21 15:39:34,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-08-21 15:39:34,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 277 transitions. [2020-08-21 15:39:34,083 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 277 transitions. Word has length 97 [2020-08-21 15:39:34,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:39:34,084 INFO L479 AbstractCegarLoop]: Abstraction has 245 states and 277 transitions. [2020-08-21 15:39:34,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 15:39:34,084 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 277 transitions. [2020-08-21 15:39:34,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-21 15:39:34,086 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:39:34,086 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] [2020-08-21 15:39:34,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 15:39:34,086 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:39:34,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:39:34,087 INFO L82 PathProgramCache]: Analyzing trace with hash 115684108, now seen corresponding path program 1 times [2020-08-21 15:39:34,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:39:34,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [400983633] [2020-08-21 15:39:34,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:39:34,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:34,348 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:39:34,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:34,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:34,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:39:34,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:34,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:39:34,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:34,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:39:34,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:34,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:39:34,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:34,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:39:34,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:34,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 15:39:34,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:34,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:34,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:34,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 15:39:34,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:34,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:34,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:34,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:34,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:34,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:34,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:34,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:34,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:34,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:39:34,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:34,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 15:39:34,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:34,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 15:39:34,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:34,526 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 15:39:34,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [400983633] [2020-08-21 15:39:34,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:39:34,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 15:39:34,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34676524] [2020-08-21 15:39:34,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 15:39:34,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:39:34,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 15:39:34,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 15:39:34,529 INFO L87 Difference]: Start difference. First operand 245 states and 277 transitions. Second operand 9 states. [2020-08-21 15:39:35,466 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:39:35,703 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 15:39:35,938 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:39:36,182 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:39:37,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:39:37,126 INFO L93 Difference]: Finished difference Result 507 states and 607 transitions. [2020-08-21 15:39:37,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 15:39:37,126 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 98 [2020-08-21 15:39:37,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:39:37,129 INFO L225 Difference]: With dead ends: 507 [2020-08-21 15:39:37,129 INFO L226 Difference]: Without dead ends: 290 [2020-08-21 15:39:37,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 15:39:37,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-08-21 15:39:37,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 250. [2020-08-21 15:39:37,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-08-21 15:39:37,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 282 transitions. [2020-08-21 15:39:37,180 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 282 transitions. Word has length 98 [2020-08-21 15:39:37,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:39:37,181 INFO L479 AbstractCegarLoop]: Abstraction has 250 states and 282 transitions. [2020-08-21 15:39:37,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 15:39:37,181 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 282 transitions. [2020-08-21 15:39:37,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-21 15:39:37,182 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:39:37,182 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] [2020-08-21 15:39:37,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 15:39:37,183 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:39:37,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:39:37,183 INFO L82 PathProgramCache]: Analyzing trace with hash 43297550, now seen corresponding path program 1 times [2020-08-21 15:39:37,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:39:37,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081416166] [2020-08-21 15:39:37,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:39:37,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:37,429 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:39:37,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:37,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:37,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:39:37,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:37,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:39:37,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:37,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:39:37,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:37,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:39:37,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:37,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:39:37,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:37,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 15:39:37,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:37,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:37,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:37,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 15:39:37,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:37,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:37,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:37,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:37,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:37,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:37,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:37,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:37,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:37,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:39:37,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:37,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 15:39:37,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:37,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 15:39:37,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:37,632 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 15:39:37,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081416166] [2020-08-21 15:39:37,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:39:37,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 15:39:37,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394376012] [2020-08-21 15:39:37,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 15:39:37,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:39:37,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 15:39:37,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 15:39:37,640 INFO L87 Difference]: Start difference. First operand 250 states and 282 transitions. Second operand 11 states. [2020-08-21 15:39:38,191 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:39:38,421 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:39:38,664 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:39:39,360 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:39:39,605 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:39:39,838 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:39:40,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:39:40,855 INFO L93 Difference]: Finished difference Result 519 states and 628 transitions. [2020-08-21 15:39:40,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 15:39:40,856 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 98 [2020-08-21 15:39:40,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:39:40,858 INFO L225 Difference]: With dead ends: 519 [2020-08-21 15:39:40,858 INFO L226 Difference]: Without dead ends: 297 [2020-08-21 15:39:40,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 15:39:40,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-08-21 15:39:40,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 254. [2020-08-21 15:39:40,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-08-21 15:39:40,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 286 transitions. [2020-08-21 15:39:40,904 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 286 transitions. Word has length 98 [2020-08-21 15:39:40,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:39:40,904 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 286 transitions. [2020-08-21 15:39:40,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 15:39:40,904 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 286 transitions. [2020-08-21 15:39:40,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-21 15:39:40,906 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:39:40,906 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] [2020-08-21 15:39:40,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 15:39:40,907 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:39:40,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:39:40,907 INFO L82 PathProgramCache]: Analyzing trace with hash 373063311, now seen corresponding path program 1 times [2020-08-21 15:39:40,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:39:40,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665916121] [2020-08-21 15:39:40,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:39:40,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:41,159 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:39:41,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:41,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:41,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:39:41,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:41,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:39:41,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:41,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:39:41,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:41,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:39:41,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:41,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:39:41,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:41,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 15:39:41,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:41,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:41,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:41,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 15:39:41,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:41,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:41,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:41,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:41,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:41,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:41,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:41,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:41,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:41,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:39:41,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:41,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 15:39:41,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:41,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 15:39:41,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:41,319 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 15:39:41,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1665916121] [2020-08-21 15:39:41,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:39:41,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 15:39:41,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337012427] [2020-08-21 15:39:41,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 15:39:41,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:39:41,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 15:39:41,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 15:39:41,323 INFO L87 Difference]: Start difference. First operand 254 states and 286 transitions. Second operand 7 states. [2020-08-21 15:39:41,670 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:39:42,220 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:39:44,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:39:44,305 INFO L93 Difference]: Finished difference Result 711 states and 879 transitions. [2020-08-21 15:39:44,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 15:39:44,305 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2020-08-21 15:39:44,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:39:44,309 INFO L225 Difference]: With dead ends: 711 [2020-08-21 15:39:44,310 INFO L226 Difference]: Without dead ends: 485 [2020-08-21 15:39:44,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-21 15:39:44,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2020-08-21 15:39:44,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 443. [2020-08-21 15:39:44,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2020-08-21 15:39:44,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 514 transitions. [2020-08-21 15:39:44,402 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 514 transitions. Word has length 98 [2020-08-21 15:39:44,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:39:44,402 INFO L479 AbstractCegarLoop]: Abstraction has 443 states and 514 transitions. [2020-08-21 15:39:44,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 15:39:44,403 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 514 transitions. [2020-08-21 15:39:44,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-08-21 15:39:44,404 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:39:44,404 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:39:44,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 15:39:44,405 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:39:44,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:39:44,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1661296137, now seen corresponding path program 1 times [2020-08-21 15:39:44,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:39:44,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1476085900] [2020-08-21 15:39:44,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:39:44,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:44,734 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:39:44,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:44,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:44,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:39:44,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:44,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:39:44,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:44,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:39:44,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:44,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:39:44,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:44,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:39:44,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:44,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 15:39:44,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:44,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 15:39:44,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:44,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:44,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:44,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-21 15:39:44,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:44,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:44,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:44,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:44,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:44,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:44,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:44,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:44,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:44,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:39:44,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:44,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 15:39:44,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:44,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 15:39:44,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:44,929 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 15:39:44,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1476085900] [2020-08-21 15:39:44,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:39:44,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 15:39:44,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601626127] [2020-08-21 15:39:44,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 15:39:44,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:39:44,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 15:39:44,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-21 15:39:44,932 INFO L87 Difference]: Start difference. First operand 443 states and 514 transitions. Second operand 12 states. [2020-08-21 15:39:45,539 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:39:46,151 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:39:47,302 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:39:47,593 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:39:47,827 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:39:48,079 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:39:48,334 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:39:49,701 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:39:49,964 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:39:51,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:39:51,035 INFO L93 Difference]: Finished difference Result 1230 states and 1515 transitions. [2020-08-21 15:39:51,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-21 15:39:51,036 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 102 [2020-08-21 15:39:51,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:39:51,043 INFO L225 Difference]: With dead ends: 1230 [2020-08-21 15:39:51,043 INFO L226 Difference]: Without dead ends: 894 [2020-08-21 15:39:51,046 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-21 15:39:51,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2020-08-21 15:39:51,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 769. [2020-08-21 15:39:51,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 769 states. [2020-08-21 15:39:51,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 883 transitions. [2020-08-21 15:39:51,203 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 883 transitions. Word has length 102 [2020-08-21 15:39:51,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:39:51,204 INFO L479 AbstractCegarLoop]: Abstraction has 769 states and 883 transitions. [2020-08-21 15:39:51,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 15:39:51,204 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 883 transitions. [2020-08-21 15:39:51,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-08-21 15:39:51,207 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:39:51,208 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:39:51,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 15:39:51,208 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:39:51,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:39:51,209 INFO L82 PathProgramCache]: Analyzing trace with hash -577396182, now seen corresponding path program 1 times [2020-08-21 15:39:51,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:39:51,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1966926599] [2020-08-21 15:39:51,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:39:51,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:51,622 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:39:51,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:51,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:51,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:39:51,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:51,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:39:51,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:51,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:39:51,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:51,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:39:51,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:51,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:39:51,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:51,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 15:39:51,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:51,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 15:39:51,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:51,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:51,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:51,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:51,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:51,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 15:39:51,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:51,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:51,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:51,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:51,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:51,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:51,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:51,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:51,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:51,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:39:51,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:51,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 15:39:51,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:51,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:51,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:51,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-21 15:39:51,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:51,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:51,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:51,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 15:39:51,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:51,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-21 15:39:51,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:51,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:52,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:52,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:52,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:52,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 15:39:52,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:52,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:52,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:52,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:52,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:52,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 15:39:52,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:52,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:52,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:52,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-21 15:39:52,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:52,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-08-21 15:39:52,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:52,060 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 22 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-21 15:39:52,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1966926599] [2020-08-21 15:39:52,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:39:52,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 15:39:52,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3316729] [2020-08-21 15:39:52,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 15:39:52,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:39:52,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 15:39:52,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-21 15:39:52,063 INFO L87 Difference]: Start difference. First operand 769 states and 883 transitions. Second operand 16 states. [2020-08-21 15:39:52,861 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 15:39:53,360 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 15:39:53,683 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 15:39:53,958 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 15:39:54,577 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-21 15:39:54,859 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 15:39:55,291 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-08-21 15:39:56,023 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:39:56,401 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-21 15:39:57,471 WARN L193 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-08-21 15:39:57,763 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-21 15:39:58,259 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 193 [2020-08-21 15:39:58,571 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:39:59,151 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:39:59,588 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-21 15:40:00,234 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 15:40:00,733 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 194 [2020-08-21 15:40:01,432 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 195 [2020-08-21 15:40:01,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:40:01,981 INFO L93 Difference]: Finished difference Result 1676 states and 1980 transitions. [2020-08-21 15:40:01,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-08-21 15:40:01,981 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 180 [2020-08-21 15:40:01,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:40:01,988 INFO L225 Difference]: With dead ends: 1676 [2020-08-21 15:40:01,988 INFO L226 Difference]: Without dead ends: 1010 [2020-08-21 15:40:01,995 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=618, Invalid=2462, Unknown=0, NotChecked=0, Total=3080 [2020-08-21 15:40:01,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2020-08-21 15:40:02,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 917. [2020-08-21 15:40:02,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 917 states. [2020-08-21 15:40:02,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1061 transitions. [2020-08-21 15:40:02,195 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1061 transitions. Word has length 180 [2020-08-21 15:40:02,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:40:02,196 INFO L479 AbstractCegarLoop]: Abstraction has 917 states and 1061 transitions. [2020-08-21 15:40:02,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 15:40:02,196 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1061 transitions. [2020-08-21 15:40:02,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-08-21 15:40:02,203 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:40:02,204 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:40:02,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 15:40:02,205 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:40:02,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:40:02,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1633838389, now seen corresponding path program 1 times [2020-08-21 15:40:02,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:40:02,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932887766] [2020-08-21 15:40:02,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:40:02,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:02,490 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:40:02,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:40:02,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:02,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:40:02,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:02,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:40:02,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:02,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:40:02,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:02,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:40:02,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:02,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:40:02,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:02,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 15:40:02,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:02,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 15:40:02,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:02,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:40:02,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:02,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:40:02,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:02,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 15:40:02,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:02,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:40:02,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:02,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:40:02,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:02,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:40:02,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:02,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:40:02,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:02,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:40:02,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:02,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 15:40:02,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:02,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:40:02,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:02,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-21 15:40:02,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:02,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:40:02,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:02,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:40:02,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:02,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:40:02,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:02,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 15:40:02,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:02,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:40:02,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:02,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:40:02,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:02,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 15:40:02,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:02,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:40:02,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:02,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:40:02,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:02,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 15:40:02,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:02,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:40:02,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:02,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 15:40:02,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:02,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:40:02,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:02,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 15:40:02,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:02,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:40:02,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:02,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:40:02,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:02,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:40:02,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:02,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 15:40:02,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:02,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:40:02,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:02,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:40:02,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:02,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 15:40:02,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:02,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 15:40:02,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:02,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:40:02,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:02,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-08-21 15:40:02,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:02,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-08-21 15:40:02,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:02,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:40:02,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:02,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-08-21 15:40:02,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:02,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:40:02,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:02,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:40:02,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:02,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:40:02,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:02,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:40:02,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:02,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:40:02,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:02,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2020-08-21 15:40:02,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:02,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-08-21 15:40:02,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:03,045 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 84 proven. 29 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2020-08-21 15:40:03,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932887766] [2020-08-21 15:40:03,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:40:03,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 15:40:03,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228309344] [2020-08-21 15:40:03,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 15:40:03,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:40:03,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 15:40:03,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-21 15:40:03,048 INFO L87 Difference]: Start difference. First operand 917 states and 1061 transitions. Second operand 15 states. [2020-08-21 15:40:04,656 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:40:04,908 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:40:05,166 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:40:05,415 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:40:06,943 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:40:07,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:40:07,741 INFO L93 Difference]: Finished difference Result 2399 states and 2887 transitions. [2020-08-21 15:40:07,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-21 15:40:07,747 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 305 [2020-08-21 15:40:07,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:40:07,756 INFO L225 Difference]: With dead ends: 2399 [2020-08-21 15:40:07,756 INFO L226 Difference]: Without dead ends: 1409 [2020-08-21 15:40:07,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 109 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2020-08-21 15:40:07,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1409 states. [2020-08-21 15:40:07,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1409 to 1197. [2020-08-21 15:40:07,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1197 states. [2020-08-21 15:40:07,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1415 transitions. [2020-08-21 15:40:07,995 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1415 transitions. Word has length 305 [2020-08-21 15:40:07,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:40:07,996 INFO L479 AbstractCegarLoop]: Abstraction has 1197 states and 1415 transitions. [2020-08-21 15:40:07,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 15:40:07,996 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1415 transitions. [2020-08-21 15:40:08,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-08-21 15:40:08,003 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:40:08,003 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:40:08,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 15:40:08,004 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:40:08,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:40:08,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1189478218, now seen corresponding path program 1 times [2020-08-21 15:40:08,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:40:08,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [995805536] [2020-08-21 15:40:08,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:40:08,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:08,290 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:40:08,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:40:08,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:08,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:40:08,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:08,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:40:08,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:08,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:40:08,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:08,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:40:08,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:08,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:40:08,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:08,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 15:40:08,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:08,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 15:40:08,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:08,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:40:08,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:08,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:40:08,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:08,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 15:40:08,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:08,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:40:08,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:08,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:40:08,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:08,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:40:08,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:08,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:40:08,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:08,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:40:08,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:08,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 15:40:08,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:08,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:40:08,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:08,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-21 15:40:08,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:08,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:40:08,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:08,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:40:08,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:08,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:40:08,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:08,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 15:40:08,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:08,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:40:08,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:08,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:40:08,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:08,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 15:40:08,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:08,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:40:08,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:08,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:40:08,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:08,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 15:40:08,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:08,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:40:08,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:08,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 15:40:08,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:08,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:40:08,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:08,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 15:40:08,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:08,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-08-21 15:40:08,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:08,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:40:08,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:08,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:40:08,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:08,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:40:08,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:08,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 15:40:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:08,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:40:08,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:08,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:40:08,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:08,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 15:40:08,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:08,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 15:40:08,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:08,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:40:08,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:08,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-08-21 15:40:08,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:08,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:40:08,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:08,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-08-21 15:40:08,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:08,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:40:08,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:08,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:40:08,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:08,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:40:08,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:08,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:40:08,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:08,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:40:08,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:08,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2020-08-21 15:40:08,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:08,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-21 15:40:08,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:08,741 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 90 proven. 42 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2020-08-21 15:40:08,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [995805536] [2020-08-21 15:40:08,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:40:08,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 15:40:08,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075020438] [2020-08-21 15:40:08,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 15:40:08,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:40:08,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 15:40:08,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-21 15:40:08,745 INFO L87 Difference]: Start difference. First operand 1197 states and 1415 transitions. Second operand 16 states. [2020-08-21 15:40:09,294 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:40:09,613 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:40:09,879 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:40:10,153 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:40:10,816 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:40:11,596 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:40:11,937 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:40:12,182 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:40:12,828 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:40:13,759 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:40:14,007 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:40:14,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:40:14,575 INFO L93 Difference]: Finished difference Result 2270 states and 2722 transitions. [2020-08-21 15:40:14,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-21 15:40:14,576 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 307 [2020-08-21 15:40:14,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:40:14,589 INFO L225 Difference]: With dead ends: 2270 [2020-08-21 15:40:14,589 INFO L226 Difference]: Without dead ends: 1199 [2020-08-21 15:40:14,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=297, Invalid=1185, Unknown=0, NotChecked=0, Total=1482 [2020-08-21 15:40:14,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2020-08-21 15:40:14,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 1149. [2020-08-21 15:40:14,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1149 states. [2020-08-21 15:40:14,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1149 states to 1149 states and 1341 transitions. [2020-08-21 15:40:14,824 INFO L78 Accepts]: Start accepts. Automaton has 1149 states and 1341 transitions. Word has length 307 [2020-08-21 15:40:14,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:40:14,825 INFO L479 AbstractCegarLoop]: Abstraction has 1149 states and 1341 transitions. [2020-08-21 15:40:14,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 15:40:14,825 INFO L276 IsEmpty]: Start isEmpty. Operand 1149 states and 1341 transitions. [2020-08-21 15:40:14,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-08-21 15:40:14,832 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:40:14,833 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:40:14,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 15:40:14,833 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:40:14,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:40:14,834 INFO L82 PathProgramCache]: Analyzing trace with hash 491352727, now seen corresponding path program 1 times [2020-08-21 15:40:14,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:40:14,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2005555548] [2020-08-21 15:40:14,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:40:14,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:15,195 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:40:15,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:40:15,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:15,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:40:15,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:15,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:40:15,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:15,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:40:15,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:15,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:40:15,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:15,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:40:15,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:15,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 15:40:15,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:15,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 15:40:15,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:15,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:40:15,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:15,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:40:15,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:15,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 15:40:15,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:15,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:40:15,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:15,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:40:15,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:15,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:40:15,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:15,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:40:15,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:15,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:40:15,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:15,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 15:40:15,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:15,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:40:15,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:15,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-21 15:40:15,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:15,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:40:15,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:15,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:40:15,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:15,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:40:15,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:15,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 15:40:15,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:15,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:40:15,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:15,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:40:15,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:15,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 15:40:15,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:15,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:40:15,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:15,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:40:15,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:15,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 15:40:15,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:15,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:40:15,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:15,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 15:40:15,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:15,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:40:15,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:15,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 15:40:15,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:15,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-21 15:40:15,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:15,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:40:15,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:15,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:40:15,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:15,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:40:15,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:15,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 15:40:15,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:15,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:40:15,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:15,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:40:15,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:15,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 15:40:15,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:15,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 15:40:15,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:15,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:40:15,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:15,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-08-21 15:40:15,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:15,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:40:15,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:15,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-08-21 15:40:15,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:15,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:40:15,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:15,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:40:15,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:15,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:40:15,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:15,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:40:15,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:15,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:40:15,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:15,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-08-21 15:40:15,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:15,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-08-21 15:40:15,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:15,610 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 71 proven. 11 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2020-08-21 15:40:15,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2005555548] [2020-08-21 15:40:15,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:40:15,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 15:40:15,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915653527] [2020-08-21 15:40:15,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 15:40:15,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:40:15,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 15:40:15,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2020-08-21 15:40:15,613 INFO L87 Difference]: Start difference. First operand 1149 states and 1341 transitions. Second operand 16 states.