/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=HIGHLEXORDER -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product52.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 19:25:18,366 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 19:25:18,370 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 19:25:18,416 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 19:25:18,417 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 19:25:18,429 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 19:25:18,430 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 19:25:18,434 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 19:25:18,436 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 19:25:18,438 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 19:25:18,439 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 19:25:18,442 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 19:25:18,443 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 19:25:18,446 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 19:25:18,447 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 19:25:18,449 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 19:25:18,450 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 19:25:18,451 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 19:25:18,453 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 19:25:18,460 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 19:25:18,462 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 19:25:18,463 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 19:25:18,465 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 19:25:18,465 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 19:25:18,470 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 19:25:18,470 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 19:25:18,470 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 19:25:18,473 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 19:25:18,474 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 19:25:18,475 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 19:25:18,475 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 19:25:18,476 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 19:25:18,476 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 19:25:18,477 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 19:25:18,478 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 19:25:18,479 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 19:25:18,479 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 19:25:18,479 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 19:25:18,480 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 19:25:18,480 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 19:25:18,482 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 19:25:18,483 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 19:25:18,526 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 19:25:18,526 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 19:25:18,528 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 19:25:18,528 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 19:25:18,529 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 19:25:18,529 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 19:25:18,529 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 19:25:18,529 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 19:25:18,529 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 19:25:18,530 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 19:25:18,531 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 19:25:18,531 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 19:25:18,531 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 19:25:18,532 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 19:25:18,532 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 19:25:18,532 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 19:25:18,532 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 19:25:18,532 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 19:25:18,533 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 19:25:18,533 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 19:25:18,533 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 19:25:18,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 19:25:18,533 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 19:25:18,534 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 19:25:18,534 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 19:25:18,534 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 19:25:18,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 19:25:18,534 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 19:25:18,535 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 19:25:18,535 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=HIGHLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=HIGHLEXORDER; [2020-08-18 19:25:18,886 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 19:25:18,904 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 19:25:18,909 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 19:25:18,911 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 19:25:18,912 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 19:25:18,912 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product52.cil.c [2020-08-18 19:25:18,979 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/95b94926a/d17425720d9a40b584ba9806af9a52c5/FLAG27de4708f [2020-08-18 19:25:19,513 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 19:25:19,514 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product52.cil.c [2020-08-18 19:25:19,538 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/95b94926a/d17425720d9a40b584ba9806af9a52c5/FLAG27de4708f [2020-08-18 19:25:19,813 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/95b94926a/d17425720d9a40b584ba9806af9a52c5 [2020-08-18 19:25:19,822 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 19:25:19,823 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 19:25:19,824 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 19:25:19,824 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 19:25:19,828 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 19:25:19,829 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:25:19" (1/1) ... [2020-08-18 19:25:19,832 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13e50368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:25:19, skipping insertion in model container [2020-08-18 19:25:19,832 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:25:19" (1/1) ... [2020-08-18 19:25:19,839 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 19:25:19,910 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 19:25:20,391 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:25:20,414 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 19:25:20,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:25:20,620 INFO L208 MainTranslator]: Completed translation [2020-08-18 19:25:20,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:25:20 WrapperNode [2020-08-18 19:25:20,623 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 19:25:20,624 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 19:25:20,624 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 19:25:20,624 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 19:25:20,638 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:25:20" (1/1) ... [2020-08-18 19:25:20,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:25:20" (1/1) ... [2020-08-18 19:25:20,671 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:25:20" (1/1) ... [2020-08-18 19:25:20,671 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:25:20" (1/1) ... [2020-08-18 19:25:20,701 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:25:20" (1/1) ... [2020-08-18 19:25:20,711 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:25:20" (1/1) ... [2020-08-18 19:25:20,717 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:25:20" (1/1) ... [2020-08-18 19:25:20,724 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 19:25:20,725 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 19:25:20,725 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 19:25:20,725 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 19:25:20,726 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:25:20" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 19:25:20,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 19:25:20,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 19:25:20,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 19:25:20,799 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 19:25:20,799 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 19:25:20,799 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 19:25:20,800 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 19:25:20,800 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 19:25:20,800 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 19:25:20,800 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 19:25:20,800 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 19:25:20,800 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 19:25:20,801 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 19:25:20,801 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 19:25:20,801 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 19:25:20,801 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-18 19:25:20,801 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-18 19:25:20,802 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-18 19:25:20,802 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 19:25:20,802 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 19:25:20,802 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 19:25:20,802 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 19:25:20,803 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 19:25:20,803 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 19:25:20,803 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 19:25:20,803 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 19:25:20,803 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 19:25:20,803 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 19:25:20,804 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 19:25:20,804 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 19:25:20,804 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 19:25:20,804 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 19:25:20,804 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 19:25:20,804 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 19:25:20,805 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 19:25:20,805 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 19:25:20,805 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 19:25:20,805 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 19:25:20,805 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 19:25:20,805 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 19:25:20,805 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 19:25:20,806 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 19:25:20,806 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 19:25:20,806 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 19:25:20,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 19:25:20,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 19:25:20,806 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 19:25:20,807 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 19:25:20,807 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 19:25:20,807 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 19:25:20,807 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 19:25:20,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 19:25:20,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 19:25:20,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 19:25:20,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 19:25:20,808 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 19:25:20,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 19:25:20,808 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 19:25:20,808 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 19:25:20,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 19:25:20,809 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 19:25:20,809 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 19:25:20,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 19:25:20,809 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 19:25:20,809 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 19:25:20,809 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 19:25:20,810 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 19:25:20,810 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 19:25:20,810 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 19:25:20,810 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 19:25:20,810 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 19:25:20,810 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-18 19:25:20,810 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 19:25:20,811 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 19:25:20,811 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 19:25:20,811 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 19:25:20,811 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 19:25:20,811 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 19:25:20,811 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 19:25:20,811 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 19:25:20,812 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 19:25:20,812 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-18 19:25:20,812 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-18 19:25:20,812 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 19:25:20,812 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 19:25:20,812 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 19:25:20,813 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 19:25:20,813 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 19:25:20,813 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 19:25:20,813 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 19:25:20,813 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 19:25:20,813 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 19:25:20,813 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 19:25:20,814 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 19:25:20,814 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 19:25:20,814 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 19:25:20,814 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 19:25:20,814 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 19:25:20,814 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 19:25:20,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 19:25:20,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 19:25:20,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 19:25:21,809 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 19:25:21,810 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 19:25:21,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:25:21 BoogieIcfgContainer [2020-08-18 19:25:21,815 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 19:25:21,816 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 19:25:21,816 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 19:25:21,819 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 19:25:21,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 07:25:19" (1/3) ... [2020-08-18 19:25:21,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11a9055e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:25:21, skipping insertion in model container [2020-08-18 19:25:21,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:25:20" (2/3) ... [2020-08-18 19:25:21,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11a9055e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:25:21, skipping insertion in model container [2020-08-18 19:25:21,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:25:21" (3/3) ... [2020-08-18 19:25:21,823 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product52.cil.c [2020-08-18 19:25:21,833 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 19:25:21,841 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 19:25:21,855 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 19:25:21,880 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 19:25:21,880 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 19:25:21,880 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 19:25:21,881 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 19:25:21,881 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 19:25:21,881 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 19:25:21,881 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 19:25:21,881 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 19:25:21,904 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states. [2020-08-18 19:25:21,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 19:25:21,914 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:25:21,915 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] [2020-08-18 19:25:21,916 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:25:21,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:25:21,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1089631799, now seen corresponding path program 1 times [2020-08-18 19:25:21,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:25:21,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690770328] [2020-08-18 19:25:21,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:25:22,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:22,566 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:25:22,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:22,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:22,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:25:22,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:22,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:25:22,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:22,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:25:22,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:22,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:25:22,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:22,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:25:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:22,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 19:25:22,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:22,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:22,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:22,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 19:25:22,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:22,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 19:25:22,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:22,727 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 19:25:22,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [690770328] [2020-08-18 19:25:22,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:25:22,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 19:25:22,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088426362] [2020-08-18 19:25:22,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 19:25:22,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:25:22,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 19:25:22,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 19:25:22,753 INFO L87 Difference]: Start difference. First operand 191 states. Second operand 4 states. [2020-08-18 19:25:23,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:25:23,962 INFO L93 Difference]: Finished difference Result 328 states and 422 transitions. [2020-08-18 19:25:23,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 19:25:23,964 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-18 19:25:23,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:25:23,980 INFO L225 Difference]: With dead ends: 328 [2020-08-18 19:25:23,981 INFO L226 Difference]: Without dead ends: 181 [2020-08-18 19:25:23,986 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 [2020-08-18 19:25:24,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-08-18 19:25:24,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 148. [2020-08-18 19:25:24,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-08-18 19:25:24,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 174 transitions. [2020-08-18 19:25:24,086 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 174 transitions. Word has length 59 [2020-08-18 19:25:24,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:25:24,087 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 174 transitions. [2020-08-18 19:25:24,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 19:25:24,087 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 174 transitions. [2020-08-18 19:25:24,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-18 19:25:24,091 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:25:24,092 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] [2020-08-18 19:25:24,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 19:25:24,092 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:25:24,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:25:24,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1975382983, now seen corresponding path program 1 times [2020-08-18 19:25:24,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:25:24,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1021270993] [2020-08-18 19:25:24,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:25:24,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:24,463 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:25:24,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:24,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:24,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:25:24,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:24,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:25:24,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:24,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:25:24,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:24,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:25:24,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:24,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:25:24,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:24,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 19:25:24,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:24,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:24,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:24,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 19:25:24,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:24,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 19:25:24,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:24,522 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 19:25:24,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1021270993] [2020-08-18 19:25:24,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:25:24,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 19:25:24,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993271207] [2020-08-18 19:25:24,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 19:25:24,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:25:24,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 19:25:24,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 19:25:24,526 INFO L87 Difference]: Start difference. First operand 148 states and 174 transitions. Second operand 5 states. [2020-08-18 19:25:24,960 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:25:25,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:25:25,875 INFO L93 Difference]: Finished difference Result 263 states and 322 transitions. [2020-08-18 19:25:25,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 19:25:25,875 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-18 19:25:25,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:25:25,880 INFO L225 Difference]: With dead ends: 263 [2020-08-18 19:25:25,880 INFO L226 Difference]: Without dead ends: 171 [2020-08-18 19:25:25,882 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 19:25:25,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-08-18 19:25:25,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 139. [2020-08-18 19:25:25,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-08-18 19:25:25,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 162 transitions. [2020-08-18 19:25:25,925 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 162 transitions. Word has length 60 [2020-08-18 19:25:25,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:25:25,925 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 162 transitions. [2020-08-18 19:25:25,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 19:25:25,926 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 162 transitions. [2020-08-18 19:25:25,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-18 19:25:25,928 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:25:25,929 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] [2020-08-18 19:25:25,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 19:25:25,929 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:25:25,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:25:25,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1007889166, now seen corresponding path program 1 times [2020-08-18 19:25:25,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:25:25,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035167300] [2020-08-18 19:25:25,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:25:25,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:26,316 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:25:26,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:26,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:26,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:25:26,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:26,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:25:26,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:26,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:25:26,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:26,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:25:26,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:26,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:25:26,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:26,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 19:25:26,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:26,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:26,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:26,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 19:25:26,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:26,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 19:25:26,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:26,440 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 19:25:26,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1035167300] [2020-08-18 19:25:26,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:25:26,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 19:25:26,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73846585] [2020-08-18 19:25:26,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 19:25:26,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:25:26,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 19:25:26,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 19:25:26,443 INFO L87 Difference]: Start difference. First operand 139 states and 162 transitions. Second operand 9 states. [2020-08-18 19:25:26,868 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:25:27,220 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:25:27,471 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:25:27,710 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:25:28,591 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:25:30,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:25:30,449 INFO L93 Difference]: Finished difference Result 466 states and 577 transitions. [2020-08-18 19:25:30,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 19:25:30,449 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-18 19:25:30,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:25:30,455 INFO L225 Difference]: With dead ends: 466 [2020-08-18 19:25:30,455 INFO L226 Difference]: Without dead ends: 355 [2020-08-18 19:25:30,457 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-18 19:25:30,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2020-08-18 19:25:30,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 294. [2020-08-18 19:25:30,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-08-18 19:25:30,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 356 transitions. [2020-08-18 19:25:30,525 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 356 transitions. Word has length 65 [2020-08-18 19:25:30,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:25:30,526 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 356 transitions. [2020-08-18 19:25:30,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 19:25:30,526 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 356 transitions. [2020-08-18 19:25:30,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-18 19:25:30,529 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:25:30,529 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:25:30,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 19:25:30,530 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:25:30,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:25:30,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1025318737, now seen corresponding path program 1 times [2020-08-18 19:25:30,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:25:30,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055608607] [2020-08-18 19:25:30,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:25:30,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:30,879 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:25:30,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:30,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:30,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:25:30,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:30,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:25:30,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:30,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:25:30,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:30,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:25:30,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:30,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:25:30,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:30,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 19:25:30,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:30,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 19:25:30,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:30,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:30,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:30,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 19:25:30,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:30,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 19:25:30,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:31,006 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 19:25:31,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1055608607] [2020-08-18 19:25:31,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:25:31,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 19:25:31,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767849873] [2020-08-18 19:25:31,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 19:25:31,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:25:31,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 19:25:31,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 19:25:31,009 INFO L87 Difference]: Start difference. First operand 294 states and 356 transitions. Second operand 9 states. [2020-08-18 19:25:31,512 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:25:32,263 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:25:33,102 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:25:33,421 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:25:33,706 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:25:33,959 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:25:34,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:25:34,785 INFO L93 Difference]: Finished difference Result 755 states and 986 transitions. [2020-08-18 19:25:34,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 19:25:34,786 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-18 19:25:34,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:25:34,792 INFO L225 Difference]: With dead ends: 755 [2020-08-18 19:25:34,792 INFO L226 Difference]: Without dead ends: 489 [2020-08-18 19:25:34,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 19:25:34,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2020-08-18 19:25:34,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 421. [2020-08-18 19:25:34,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2020-08-18 19:25:34,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 507 transitions. [2020-08-18 19:25:34,897 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 507 transitions. Word has length 70 [2020-08-18 19:25:34,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:25:34,897 INFO L479 AbstractCegarLoop]: Abstraction has 421 states and 507 transitions. [2020-08-18 19:25:34,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 19:25:34,897 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 507 transitions. [2020-08-18 19:25:34,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 19:25:34,901 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:25:34,901 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:25:34,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 19:25:34,902 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:25:34,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:25:34,902 INFO L82 PathProgramCache]: Analyzing trace with hash -2085443903, now seen corresponding path program 1 times [2020-08-18 19:25:34,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:25:34,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605881656] [2020-08-18 19:25:34,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:25:34,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:35,210 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:25:35,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:35,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:35,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:25:35,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:35,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:25:35,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:35,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:25:35,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:35,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:25:35,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:35,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:25:35,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:35,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 19:25:35,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:35,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:35,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:35,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 19:25:35,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:35,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:35,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:35,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:35,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:35,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:25:35,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:35,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:25:35,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:35,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 19:25:35,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:35,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 19:25:35,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:35,393 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 19:25:35,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605881656] [2020-08-18 19:25:35,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:25:35,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 19:25:35,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970404345] [2020-08-18 19:25:35,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 19:25:35,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:25:35,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 19:25:35,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 19:25:35,397 INFO L87 Difference]: Start difference. First operand 421 states and 507 transitions. Second operand 9 states. [2020-08-18 19:25:36,512 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:25:36,760 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 19:25:37,039 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:25:37,262 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:25:38,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:25:38,054 INFO L93 Difference]: Finished difference Result 903 states and 1149 transitions. [2020-08-18 19:25:38,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 19:25:38,055 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-18 19:25:38,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:25:38,058 INFO L225 Difference]: With dead ends: 903 [2020-08-18 19:25:38,059 INFO L226 Difference]: Without dead ends: 510 [2020-08-18 19:25:38,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 19:25:38,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2020-08-18 19:25:38,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 434. [2020-08-18 19:25:38,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2020-08-18 19:25:38,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 521 transitions. [2020-08-18 19:25:38,149 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 521 transitions. Word has length 93 [2020-08-18 19:25:38,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:25:38,150 INFO L479 AbstractCegarLoop]: Abstraction has 434 states and 521 transitions. [2020-08-18 19:25:38,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 19:25:38,150 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 521 transitions. [2020-08-18 19:25:38,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 19:25:38,152 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:25:38,153 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:25:38,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 19:25:38,153 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:25:38,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:25:38,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1383844029, now seen corresponding path program 1 times [2020-08-18 19:25:38,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:25:38,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [813777273] [2020-08-18 19:25:38,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:25:38,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:38,411 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:25:38,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:38,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:38,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:25:38,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:38,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:25:38,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:38,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:25:38,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:38,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:25:38,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:38,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:25:38,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:38,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 19:25:38,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:38,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:38,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:38,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 19:25:38,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:38,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:38,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:38,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:38,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:38,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:25:38,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:38,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:25:38,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:38,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 19:25:38,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:38,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 19:25:38,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:38,586 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 19:25:38,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [813777273] [2020-08-18 19:25:38,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:25:38,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 19:25:38,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345430100] [2020-08-18 19:25:38,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 19:25:38,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:25:38,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 19:25:38,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 19:25:38,588 INFO L87 Difference]: Start difference. First operand 434 states and 521 transitions. Second operand 11 states. [2020-08-18 19:25:39,156 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:25:39,394 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:25:39,637 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:25:40,403 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:25:40,685 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:25:40,921 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:25:41,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:25:41,784 INFO L93 Difference]: Finished difference Result 930 states and 1198 transitions. [2020-08-18 19:25:41,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 19:25:41,788 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-18 19:25:41,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:25:41,794 INFO L225 Difference]: With dead ends: 930 [2020-08-18 19:25:41,794 INFO L226 Difference]: Without dead ends: 524 [2020-08-18 19:25:41,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 19:25:41,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2020-08-18 19:25:41,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 442. [2020-08-18 19:25:41,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-08-18 19:25:41,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 529 transitions. [2020-08-18 19:25:41,880 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 529 transitions. Word has length 93 [2020-08-18 19:25:41,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:25:41,880 INFO L479 AbstractCegarLoop]: Abstraction has 442 states and 529 transitions. [2020-08-18 19:25:41,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 19:25:41,880 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 529 transitions. [2020-08-18 19:25:41,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 19:25:41,882 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:25:41,882 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:25:41,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 19:25:41,883 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:25:41,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:25:41,883 INFO L82 PathProgramCache]: Analyzing trace with hash 341636868, now seen corresponding path program 1 times [2020-08-18 19:25:41,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:25:41,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [245717896] [2020-08-18 19:25:41,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:25:41,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:42,217 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:25:42,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:42,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:42,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:25:42,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:42,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:25:42,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:42,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:25:42,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:42,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:25:42,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:42,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:25:42,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:42,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 19:25:42,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:42,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:42,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:42,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 19:25:42,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:42,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:42,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:42,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:42,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:42,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:25:42,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:42,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:25:42,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:42,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 19:25:42,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:42,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 19:25:42,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:42,332 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 19:25:42,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [245717896] [2020-08-18 19:25:42,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:25:42,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 19:25:42,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387413611] [2020-08-18 19:25:42,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 19:25:42,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:25:42,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 19:25:42,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 19:25:42,334 INFO L87 Difference]: Start difference. First operand 442 states and 529 transitions. Second operand 7 states. [2020-08-18 19:25:42,665 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:25:43,187 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:25:45,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:25:45,196 INFO L93 Difference]: Finished difference Result 1411 states and 1828 transitions. [2020-08-18 19:25:45,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 19:25:45,197 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2020-08-18 19:25:45,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:25:45,204 INFO L225 Difference]: With dead ends: 1411 [2020-08-18 19:25:45,204 INFO L226 Difference]: Without dead ends: 997 [2020-08-18 19:25:45,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-18 19:25:45,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2020-08-18 19:25:45,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 919. [2020-08-18 19:25:45,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 919 states. [2020-08-18 19:25:45,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1115 transitions. [2020-08-18 19:25:45,375 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1115 transitions. Word has length 93 [2020-08-18 19:25:45,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:25:45,376 INFO L479 AbstractCegarLoop]: Abstraction has 919 states and 1115 transitions. [2020-08-18 19:25:45,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 19:25:45,376 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1115 transitions. [2020-08-18 19:25:45,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-18 19:25:45,378 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:25:45,378 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] [2020-08-18 19:25:45,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 19:25:45,379 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:25:45,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:25:45,379 INFO L82 PathProgramCache]: Analyzing trace with hash -643321942, now seen corresponding path program 1 times [2020-08-18 19:25:45,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:25:45,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367877377] [2020-08-18 19:25:45,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:25:45,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:45,733 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:25:45,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:45,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:45,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:25:45,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:45,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:25:45,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:45,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:25:45,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:45,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:25:45,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:45,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:25:45,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:45,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 19:25:45,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:45,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 19:25:45,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:45,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:45,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:45,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-18 19:25:45,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:45,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:45,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:45,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:45,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:45,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:25:45,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:45,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:25:45,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:45,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 19:25:45,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:45,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 19:25:45,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:45,909 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 19:25:45,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367877377] [2020-08-18 19:25:45,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:25:45,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 19:25:45,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985150636] [2020-08-18 19:25:45,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 19:25:45,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:25:45,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 19:25:45,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-18 19:25:45,912 INFO L87 Difference]: Start difference. First operand 919 states and 1115 transitions. Second operand 12 states. [2020-08-18 19:25:46,377 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:25:47,025 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:25:47,706 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:25:48,029 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:25:48,283 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:25:48,552 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:25:48,804 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:25:50,940 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:25:51,223 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:25:51,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:25:51,745 INFO L93 Difference]: Finished difference Result 2611 states and 3380 transitions. [2020-08-18 19:25:51,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-18 19:25:51,752 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 97 [2020-08-18 19:25:51,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:25:51,764 INFO L225 Difference]: With dead ends: 2611 [2020-08-18 19:25:51,764 INFO L226 Difference]: Without dead ends: 1912 [2020-08-18 19:25:51,768 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-18 19:25:51,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1912 states. [2020-08-18 19:25:52,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1912 to 1606. [2020-08-18 19:25:52,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1606 states. [2020-08-18 19:25:52,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 1936 transitions. [2020-08-18 19:25:52,040 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 1936 transitions. Word has length 97 [2020-08-18 19:25:52,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:25:52,040 INFO L479 AbstractCegarLoop]: Abstraction has 1606 states and 1936 transitions. [2020-08-18 19:25:52,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 19:25:52,041 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 1936 transitions. [2020-08-18 19:25:52,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-08-18 19:25:52,044 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:25:52,045 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:25:52,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 19:25:52,045 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:25:52,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:25:52,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1477147143, now seen corresponding path program 1 times [2020-08-18 19:25:52,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:25:52,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1481550825] [2020-08-18 19:25:52,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:25:52,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:52,404 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:25:52,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:52,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:52,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:25:52,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:52,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:25:52,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:52,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:25:52,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:52,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:25:52,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:52,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:25:52,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:52,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 19:25:52,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:52,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 19:25:52,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:52,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:52,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:52,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:52,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:52,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 19:25:52,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:52,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:52,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:52,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:52,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:52,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:25:52,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:52,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:25:52,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:52,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 19:25:52,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:52,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:25:52,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:52,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-18 19:25:52,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:52,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:52,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:52,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-18 19:25:52,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:52,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-18 19:25:52,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:52,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:52,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:52,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:25:52,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:52,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 19:25:52,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:52,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:52,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:52,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-18 19:25:52,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:52,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 19:25:52,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:52,747 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 19:25:52,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1481550825] [2020-08-18 19:25:52,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:25:52,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 19:25:52,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128074226] [2020-08-18 19:25:52,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 19:25:52,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:25:52,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 19:25:52,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-18 19:25:52,750 INFO L87 Difference]: Start difference. First operand 1606 states and 1936 transitions. Second operand 16 states. [2020-08-18 19:25:53,539 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:25:53,870 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 19:25:54,135 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 19:25:54,390 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 19:25:55,146 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:25:55,433 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:25:55,779 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 19:25:56,060 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 19:25:57,142 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:25:57,805 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:25:58,079 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:25:58,399 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:25:58,960 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:25:59,356 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:25:59,755 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 19:26:00,505 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:26:00,814 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 19:26:01,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:26:01,670 INFO L93 Difference]: Finished difference Result 3483 states and 4326 transitions. [2020-08-18 19:26:01,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-08-18 19:26:01,671 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 159 [2020-08-18 19:26:01,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:26:01,684 INFO L225 Difference]: With dead ends: 3483 [2020-08-18 19:26:01,684 INFO L226 Difference]: Without dead ends: 2085 [2020-08-18 19:26:01,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=589, Invalid=2167, Unknown=0, NotChecked=0, Total=2756 [2020-08-18 19:26:01,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2085 states. [2020-08-18 19:26:02,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2085 to 1893. [2020-08-18 19:26:02,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1893 states. [2020-08-18 19:26:02,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1893 states to 1893 states and 2238 transitions. [2020-08-18 19:26:02,149 INFO L78 Accepts]: Start accepts. Automaton has 1893 states and 2238 transitions. Word has length 159 [2020-08-18 19:26:02,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:26:02,150 INFO L479 AbstractCegarLoop]: Abstraction has 1893 states and 2238 transitions. [2020-08-18 19:26:02,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 19:26:02,150 INFO L276 IsEmpty]: Start isEmpty. Operand 1893 states and 2238 transitions. [2020-08-18 19:26:02,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-08-18 19:26:02,160 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:26:02,160 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:26:02,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 19:26:02,161 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:26:02,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:26:02,161 INFO L82 PathProgramCache]: Analyzing trace with hash 430621663, now seen corresponding path program 1 times [2020-08-18 19:26:02,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:26:02,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [643167969] [2020-08-18 19:26:02,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:26:02,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:02,492 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:26:02,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:02,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:02,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:26:02,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:02,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:26:02,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:02,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:26:02,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:02,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:26:02,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:02,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:26:02,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:02,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 19:26:02,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:02,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 19:26:02,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:02,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:02,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:02,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:02,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:02,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 19:26:02,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:02,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:02,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:02,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:02,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:02,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:02,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:02,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:26:02,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:02,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 19:26:02,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:02,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:02,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:02,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-18 19:26:02,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:02,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:02,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:02,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:02,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:02,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:26:02,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:02,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 19:26:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:02,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:02,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:02,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:02,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:02,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 19:26:02,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:02,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:02,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:02,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 19:26:02,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:02,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:02,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:02,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-18 19:26:02,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:02,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:02,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:02,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:02,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:02,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:26:02,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:02,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 19:26:02,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:02,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:02,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:02,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:02,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:02,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 19:26:02,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:02,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 19:26:02,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:02,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:02,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:02,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-18 19:26:02,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:02,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:02,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:02,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-18 19:26:02,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:02,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:02,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:02,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:02,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:02,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:02,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:02,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:26:02,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:02,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2020-08-18 19:26:02,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:02,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-18 19:26:02,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:02,956 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 83 proven. 29 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2020-08-18 19:26:02,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [643167969] [2020-08-18 19:26:02,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:26:02,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 19:26:02,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147880554] [2020-08-18 19:26:02,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 19:26:02,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:26:02,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 19:26:02,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-18 19:26:02,961 INFO L87 Difference]: Start difference. First operand 1893 states and 2238 transitions. Second operand 15 states. [2020-08-18 19:26:04,487 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:26:04,747 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:26:05,001 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:26:05,255 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:26:06,241 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:26:08,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:26:08,026 INFO L93 Difference]: Finished difference Result 5185 states and 6381 transitions. [2020-08-18 19:26:08,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 19:26:08,033 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 277 [2020-08-18 19:26:08,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:26:08,054 INFO L225 Difference]: With dead ends: 5185 [2020-08-18 19:26:08,054 INFO L226 Difference]: Without dead ends: 3002 [2020-08-18 19:26:08,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 97 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2020-08-18 19:26:08,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3002 states. [2020-08-18 19:26:08,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3002 to 2604. [2020-08-18 19:26:08,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2604 states. [2020-08-18 19:26:08,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2604 states to 2604 states and 3157 transitions. [2020-08-18 19:26:08,596 INFO L78 Accepts]: Start accepts. Automaton has 2604 states and 3157 transitions. Word has length 277 [2020-08-18 19:26:08,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:26:08,597 INFO L479 AbstractCegarLoop]: Abstraction has 2604 states and 3157 transitions. [2020-08-18 19:26:08,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 19:26:08,597 INFO L276 IsEmpty]: Start isEmpty. Operand 2604 states and 3157 transitions. [2020-08-18 19:26:08,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-08-18 19:26:08,607 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:26:08,608 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:26:08,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 19:26:08,608 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:26:08,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:26:08,609 INFO L82 PathProgramCache]: Analyzing trace with hash 154824420, now seen corresponding path program 1 times [2020-08-18 19:26:08,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:26:08,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1198854249] [2020-08-18 19:26:08,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:26:08,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:08,945 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:26:08,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:08,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:08,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:26:08,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:08,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:26:08,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:08,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:26:08,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:08,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:26:08,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:08,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:26:08,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:09,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 19:26:09,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:09,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 19:26:09,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:09,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:09,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:09,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:09,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:09,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 19:26:09,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:09,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:09,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:09,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:09,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:09,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:09,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:09,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:26:09,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:09,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 19:26:09,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:09,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:09,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:09,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-18 19:26:09,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:09,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:09,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:09,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:09,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:09,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:26:09,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:09,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 19:26:09,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:09,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:09,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:09,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:09,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:09,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 19:26:09,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:09,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:09,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:09,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 19:26:09,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:09,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:09,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:09,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 19:26:09,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:09,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-18 19:26:09,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:09,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:09,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:09,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:09,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:09,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:26:09,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:09,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 19:26:09,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:09,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:09,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:09,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:09,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:09,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 19:26:09,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:09,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 19:26:09,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:09,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:09,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:09,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-08-18 19:26:09,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:09,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:09,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:09,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-08-18 19:26:09,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:09,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:09,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:09,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:09,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:09,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:09,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:09,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:26:09,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:09,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-18 19:26:09,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:09,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-18 19:26:09,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:09,311 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 90 proven. 36 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2020-08-18 19:26:09,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1198854249] [2020-08-18 19:26:09,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:26:09,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 19:26:09,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127288983] [2020-08-18 19:26:09,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 19:26:09,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:26:09,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 19:26:09,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-18 19:26:09,317 INFO L87 Difference]: Start difference. First operand 2604 states and 3157 transitions. Second operand 16 states. [2020-08-18 19:26:10,156 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:26:10,505 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:26:10,754 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:26:11,004 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:26:11,807 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:26:12,831 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:26:13,125 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:26:13,359 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:26:13,963 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:26:14,849 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:26:15,085 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:26:16,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:26:16,074 INFO L93 Difference]: Finished difference Result 4984 states and 6131 transitions. [2020-08-18 19:26:16,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-18 19:26:16,075 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 283 [2020-08-18 19:26:16,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:26:16,090 INFO L225 Difference]: With dead ends: 4984 [2020-08-18 19:26:16,091 INFO L226 Difference]: Without dead ends: 2611 [2020-08-18 19:26:16,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=297, Invalid=1185, Unknown=0, NotChecked=0, Total=1482 [2020-08-18 19:26:16,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2611 states. [2020-08-18 19:26:16,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2611 to 2535. [2020-08-18 19:26:16,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2535 states. [2020-08-18 19:26:16,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2535 states to 2535 states and 3048 transitions. [2020-08-18 19:26:16,693 INFO L78 Accepts]: Start accepts. Automaton has 2535 states and 3048 transitions. Word has length 283 [2020-08-18 19:26:16,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:26:16,695 INFO L479 AbstractCegarLoop]: Abstraction has 2535 states and 3048 transitions. [2020-08-18 19:26:16,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 19:26:16,696 INFO L276 IsEmpty]: Start isEmpty. Operand 2535 states and 3048 transitions. [2020-08-18 19:26:16,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-08-18 19:26:16,707 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:26:16,708 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:26:16,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 19:26:16,708 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:26:16,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:26:16,709 INFO L82 PathProgramCache]: Analyzing trace with hash -344117058, now seen corresponding path program 1 times [2020-08-18 19:26:16,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:26:16,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1222367277] [2020-08-18 19:26:16,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:26:16,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat