/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=DEEPEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product39.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 20:54:39,462 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 20:54:39,465 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 20:54:39,506 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 20:54:39,507 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 20:54:39,515 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 20:54:39,518 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 20:54:39,521 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 20:54:39,524 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 20:54:39,527 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 20:54:39,527 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 20:54:39,528 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 20:54:39,529 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 20:54:39,531 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 20:54:39,534 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 20:54:39,535 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 20:54:39,537 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 20:54:39,538 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 20:54:39,539 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 20:54:39,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 20:54:39,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 20:54:39,551 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 20:54:39,552 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 20:54:39,553 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 20:54:39,571 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 20:54:39,571 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 20:54:39,571 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 20:54:39,572 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 20:54:39,573 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 20:54:39,573 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 20:54:39,574 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 20:54:39,574 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 20:54:39,578 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 20:54:39,579 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 20:54:39,582 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 20:54:39,582 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 20:54:39,583 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 20:54:39,583 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 20:54:39,583 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 20:54:39,584 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 20:54:39,584 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 20:54:39,586 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 20:54:39,630 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 20:54:39,630 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 20:54:39,632 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 20:54:39,632 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 20:54:39,632 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 20:54:39,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 20:54:39,633 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 20:54:39,633 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 20:54:39,633 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 20:54:39,633 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 20:54:39,634 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 20:54:39,635 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 20:54:39,635 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 20:54:39,635 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 20:54:39,636 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 20:54:39,636 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 20:54:39,636 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 20:54:39,636 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 20:54:39,636 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 20:54:39,637 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 20:54:39,637 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 20:54:39,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:54:39,638 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 20:54:39,638 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 20:54:39,638 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 20:54:39,638 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 20:54:39,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 20:54:39,638 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 20:54:39,639 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 20:54:39,639 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=DEEPEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=DEEPEST; [2020-08-18 20:54:39,966 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 20:54:39,979 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 20:54:39,983 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 20:54:39,984 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 20:54:39,985 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 20:54:39,985 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product39.cil.c [2020-08-18 20:54:40,054 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/641cde873/b031d45cbcd44cabacee57eb88655cbe/FLAGf649d2821 [2020-08-18 20:54:40,590 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 20:54:40,591 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product39.cil.c [2020-08-18 20:54:40,605 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/641cde873/b031d45cbcd44cabacee57eb88655cbe/FLAGf649d2821 [2020-08-18 20:54:40,857 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/641cde873/b031d45cbcd44cabacee57eb88655cbe [2020-08-18 20:54:40,866 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 20:54:40,869 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 20:54:40,871 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 20:54:40,871 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 20:54:40,875 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 20:54:40,876 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:54:40" (1/1) ... [2020-08-18 20:54:40,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7aa772f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:54:40, skipping insertion in model container [2020-08-18 20:54:40,880 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:54:40" (1/1) ... [2020-08-18 20:54:40,888 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 20:54:40,956 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 20:54:41,498 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:54:41,516 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 20:54:41,637 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:54:41,669 INFO L208 MainTranslator]: Completed translation [2020-08-18 20:54:41,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:54:41 WrapperNode [2020-08-18 20:54:41,670 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 20:54:41,671 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 20:54:41,671 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 20:54:41,671 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 20:54:41,682 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:54:41" (1/1) ... [2020-08-18 20:54:41,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:54:41" (1/1) ... [2020-08-18 20:54:41,701 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:54:41" (1/1) ... [2020-08-18 20:54:41,702 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:54:41" (1/1) ... [2020-08-18 20:54:41,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:54:41" (1/1) ... [2020-08-18 20:54:41,745 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:54:41" (1/1) ... [2020-08-18 20:54:41,750 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:54:41" (1/1) ... [2020-08-18 20:54:41,758 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 20:54:41,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 20:54:41,759 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 20:54:41,759 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 20:54:41,760 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:54:41" (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 20:54:41,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 20:54:41,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 20:54:41,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 20:54:41,820 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 20:54:41,820 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 20:54:41,820 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 20:54:41,821 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 20:54:41,821 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 20:54:41,821 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 20:54:41,821 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 20:54:41,822 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 20:54:41,822 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 20:54:41,822 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 20:54:41,822 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 20:54:41,823 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 20:54:41,823 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-18 20:54:41,824 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-18 20:54:41,824 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 20:54:41,824 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 20:54:41,824 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 20:54:41,825 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 20:54:41,825 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 20:54:41,825 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 20:54:41,826 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 20:54:41,827 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 20:54:41,828 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 20:54:41,828 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 20:54:41,828 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 20:54:41,828 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 20:54:41,829 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 20:54:41,829 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 20:54:41,829 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 20:54:41,829 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 20:54:41,829 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 20:54:41,829 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 20:54:41,830 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 20:54:41,830 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 20:54:41,830 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 20:54:41,830 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 20:54:41,831 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 20:54:41,831 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 20:54:41,831 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 20:54:41,831 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 20:54:41,831 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 20:54:41,832 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 20:54:41,834 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 20:54:41,834 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 20:54:41,834 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 20:54:41,834 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 20:54:41,835 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 20:54:41,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 20:54:41,835 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 20:54:41,835 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 20:54:41,835 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 20:54:41,836 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 20:54:41,836 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 20:54:41,836 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-18 20:54:41,837 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 20:54:41,837 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 20:54:41,837 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 20:54:41,837 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 20:54:41,838 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 20:54:41,838 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 20:54:41,838 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 20:54:41,838 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 20:54:41,838 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-18 20:54:41,838 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 20:54:41,839 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 20:54:41,839 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 20:54:41,839 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 20:54:41,839 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 20:54:41,839 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 20:54:41,840 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 20:54:41,840 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 20:54:41,841 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 20:54:41,841 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 20:54:41,841 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 20:54:41,842 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 20:54:41,842 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 20:54:41,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 20:54:41,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 20:54:41,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 20:54:41,843 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 20:54:41,843 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 20:54:41,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 20:54:41,843 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 20:54:41,844 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 20:54:41,844 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 20:54:41,845 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 20:54:41,845 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 20:54:41,845 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 20:54:41,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 20:54:41,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 20:54:41,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 20:54:42,891 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 20:54:42,891 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 20:54:42,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:54:42 BoogieIcfgContainer [2020-08-18 20:54:42,897 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 20:54:42,898 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 20:54:42,898 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 20:54:42,902 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 20:54:42,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 08:54:40" (1/3) ... [2020-08-18 20:54:42,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56b3612b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:54:42, skipping insertion in model container [2020-08-18 20:54:42,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:54:41" (2/3) ... [2020-08-18 20:54:42,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56b3612b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:54:42, skipping insertion in model container [2020-08-18 20:54:42,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:54:42" (3/3) ... [2020-08-18 20:54:42,906 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product39.cil.c [2020-08-18 20:54:42,917 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 20:54:42,925 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 20:54:42,940 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 20:54:42,966 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 20:54:42,966 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 20:54:42,966 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 20:54:42,966 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 20:54:42,966 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 20:54:42,966 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 20:54:42,967 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 20:54:42,967 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 20:54:42,991 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states. [2020-08-18 20:54:43,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 20:54:43,002 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:54:43,003 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:54:43,004 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:54:43,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:54:43,010 INFO L82 PathProgramCache]: Analyzing trace with hash 652232891, now seen corresponding path program 1 times [2020-08-18 20:54:43,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:54:43,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2001735645] [2020-08-18 20:54:43,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:54:43,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:43,779 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:54:43,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:54:43,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:43,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:54:43,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:43,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:54:43,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:43,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:54:43,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:43,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:54:43,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:43,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:54:43,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:43,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 20:54:43,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:43,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 20:54:43,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:43,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:54:43,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2001735645] [2020-08-18 20:54:43,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:54:43,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 20:54:43,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519549502] [2020-08-18 20:54:43,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 20:54:43,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:54:43,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 20:54:43,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 20:54:43,925 INFO L87 Difference]: Start difference. First operand 177 states. Second operand 4 states. [2020-08-18 20:54:45,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:54:45,130 INFO L93 Difference]: Finished difference Result 301 states and 396 transitions. [2020-08-18 20:54:45,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 20:54:45,132 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-18 20:54:45,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:54:45,147 INFO L225 Difference]: With dead ends: 301 [2020-08-18 20:54:45,148 INFO L226 Difference]: Without dead ends: 168 [2020-08-18 20:54:45,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 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 20:54:45,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-08-18 20:54:45,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 134. [2020-08-18 20:54:45,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-08-18 20:54:45,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 159 transitions. [2020-08-18 20:54:45,248 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 159 transitions. Word has length 51 [2020-08-18 20:54:45,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:54:45,248 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 159 transitions. [2020-08-18 20:54:45,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 20:54:45,249 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 159 transitions. [2020-08-18 20:54:45,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 20:54:45,253 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:54:45,253 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:54:45,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 20:54:45,254 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:54:45,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:54:45,254 INFO L82 PathProgramCache]: Analyzing trace with hash -564528421, now seen corresponding path program 1 times [2020-08-18 20:54:45,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:54:45,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [232338114] [2020-08-18 20:54:45,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:54:45,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:45,599 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:54:45,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:54:45,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:45,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:54:45,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:45,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:54:45,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:45,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:54:45,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:45,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:54:45,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:45,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:54:45,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:45,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 20:54:45,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:45,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 20:54:45,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:45,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:54:45,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [232338114] [2020-08-18 20:54:45,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:54:45,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 20:54:45,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912171391] [2020-08-18 20:54:45,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 20:54:45,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:54:45,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 20:54:45,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:54:45,653 INFO L87 Difference]: Start difference. First operand 134 states and 159 transitions. Second operand 5 states. [2020-08-18 20:54:46,130 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:54:47,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:54:47,044 INFO L93 Difference]: Finished difference Result 240 states and 299 transitions. [2020-08-18 20:54:47,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 20:54:47,045 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-18 20:54:47,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:54:47,048 INFO L225 Difference]: With dead ends: 240 [2020-08-18 20:54:47,048 INFO L226 Difference]: Without dead ends: 158 [2020-08-18 20:54:47,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 20:54:47,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-08-18 20:54:47,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 125. [2020-08-18 20:54:47,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-08-18 20:54:47,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 147 transitions. [2020-08-18 20:54:47,091 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 147 transitions. Word has length 52 [2020-08-18 20:54:47,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:54:47,091 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 147 transitions. [2020-08-18 20:54:47,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 20:54:47,091 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 147 transitions. [2020-08-18 20:54:47,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-18 20:54:47,094 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:54:47,094 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:54:47,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 20:54:47,095 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:54:47,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:54:47,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1211879035, now seen corresponding path program 1 times [2020-08-18 20:54:47,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:54:47,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1137641010] [2020-08-18 20:54:47,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:54:47,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:47,411 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:54:47,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:54:47,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:47,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:54:47,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:47,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:54:47,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:47,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:54:47,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:47,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:54:47,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:47,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:54:47,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:47,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 20:54:47,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:47,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 20:54:47,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:47,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:54:47,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1137641010] [2020-08-18 20:54:47,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:54:47,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 20:54:47,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103137962] [2020-08-18 20:54:47,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 20:54:47,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:54:47,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 20:54:47,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 20:54:47,574 INFO L87 Difference]: Start difference. First operand 125 states and 147 transitions. Second operand 9 states. [2020-08-18 20:54:47,963 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:54:48,240 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:54:48,484 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:54:48,733 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:54:49,513 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:54:51,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:54:51,345 INFO L93 Difference]: Finished difference Result 423 states and 537 transitions. [2020-08-18 20:54:51,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 20:54:51,346 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-18 20:54:51,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:54:51,350 INFO L225 Difference]: With dead ends: 423 [2020-08-18 20:54:51,351 INFO L226 Difference]: Without dead ends: 326 [2020-08-18 20:54:51,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-18 20:54:51,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-08-18 20:54:51,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 265. [2020-08-18 20:54:51,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-08-18 20:54:51,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 324 transitions. [2020-08-18 20:54:51,438 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 324 transitions. Word has length 56 [2020-08-18 20:54:51,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:54:51,439 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 324 transitions. [2020-08-18 20:54:51,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 20:54:51,439 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 324 transitions. [2020-08-18 20:54:51,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-18 20:54:51,442 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:54:51,442 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:54:51,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 20:54:51,443 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:54:51,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:54:51,443 INFO L82 PathProgramCache]: Analyzing trace with hash -773448372, now seen corresponding path program 1 times [2020-08-18 20:54:51,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:54:51,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2064103640] [2020-08-18 20:54:51,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:54:51,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:51,790 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:54:51,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:54:51,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:51,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:54:51,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:51,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:54:51,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:51,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:54:51,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:51,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:54:51,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:51,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:54:51,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:51,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 20:54:51,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:51,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 20:54:51,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:51,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 20:54:51,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:51,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:54:51,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2064103640] [2020-08-18 20:54:51,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:54:51,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 20:54:51,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224413342] [2020-08-18 20:54:51,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 20:54:51,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:54:51,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 20:54:51,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 20:54:51,888 INFO L87 Difference]: Start difference. First operand 265 states and 324 transitions. Second operand 9 states. [2020-08-18 20:54:52,283 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:54:53,241 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:54:53,614 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:54:53,954 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:54:54,269 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:54:55,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:54:55,627 INFO L93 Difference]: Finished difference Result 845 states and 1123 transitions. [2020-08-18 20:54:55,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 20:54:55,628 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-08-18 20:54:55,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:54:55,634 INFO L225 Difference]: With dead ends: 845 [2020-08-18 20:54:55,634 INFO L226 Difference]: Without dead ends: 608 [2020-08-18 20:54:55,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-18 20:54:55,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2020-08-18 20:54:55,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 478. [2020-08-18 20:54:55,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-08-18 20:54:55,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 588 transitions. [2020-08-18 20:54:55,796 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 588 transitions. Word has length 62 [2020-08-18 20:54:55,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:54:55,797 INFO L479 AbstractCegarLoop]: Abstraction has 478 states and 588 transitions. [2020-08-18 20:54:55,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 20:54:55,798 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 588 transitions. [2020-08-18 20:54:55,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-18 20:54:55,807 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:54:55,807 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:54:55,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 20:54:55,808 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:54:55,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:54:55,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1032831448, now seen corresponding path program 1 times [2020-08-18 20:54:55,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:54:55,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [456296312] [2020-08-18 20:54:55,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:54:55,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:56,142 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:54:56,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:54:56,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:56,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:54:56,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:56,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:54:56,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:56,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:54:56,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:56,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:54:56,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:56,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:54:56,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:56,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 20:54:56,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:56,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 20:54:56,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:56,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 20:54:56,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:56,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-18 20:54:56,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:56,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:54:56,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [456296312] [2020-08-18 20:54:56,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:54:56,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 20:54:56,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368457975] [2020-08-18 20:54:56,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 20:54:56,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:54:56,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 20:54:56,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 20:54:56,244 INFO L87 Difference]: Start difference. First operand 478 states and 588 transitions. Second operand 10 states. [2020-08-18 20:54:56,632 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:54:57,676 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:54:57,972 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:54:58,233 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:54:58,888 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:55:00,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:55:00,134 INFO L93 Difference]: Finished difference Result 1339 states and 1842 transitions. [2020-08-18 20:55:00,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-18 20:55:00,137 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-08-18 20:55:00,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:55:00,144 INFO L225 Difference]: With dead ends: 1339 [2020-08-18 20:55:00,145 INFO L226 Difference]: Without dead ends: 889 [2020-08-18 20:55:00,147 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2020-08-18 20:55:00,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2020-08-18 20:55:00,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 693. [2020-08-18 20:55:00,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2020-08-18 20:55:00,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 847 transitions. [2020-08-18 20:55:00,272 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 847 transitions. Word has length 66 [2020-08-18 20:55:00,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:55:00,272 INFO L479 AbstractCegarLoop]: Abstraction has 693 states and 847 transitions. [2020-08-18 20:55:00,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 20:55:00,273 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 847 transitions. [2020-08-18 20:55:00,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 20:55:00,275 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:55:00,275 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:55:00,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 20:55:00,276 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:55:00,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:55:00,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1961211398, now seen corresponding path program 1 times [2020-08-18 20:55:00,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:55:00,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [185765239] [2020-08-18 20:55:00,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:55:00,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:00,546 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:55:00,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:55:00,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:00,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:55:00,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:00,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:55:00,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:00,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:55:00,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:00,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:55:00,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:00,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:55:00,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:00,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 20:55:00,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:00,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 20:55:00,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:00,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:55:00,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:00,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:55:00,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:00,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:55:00,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:00,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:55:00,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:00,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 20:55:00,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:00,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 20:55:00,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:00,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:55:00,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [185765239] [2020-08-18 20:55:00,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:55:00,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 20:55:00,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627573219] [2020-08-18 20:55:00,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 20:55:00,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:55:00,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 20:55:00,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 20:55:00,733 INFO L87 Difference]: Start difference. First operand 693 states and 847 transitions. Second operand 10 states. [2020-08-18 20:55:01,153 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:55:02,201 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:55:02,458 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 20:55:02,754 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:55:03,031 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:55:05,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:55:05,239 INFO L93 Difference]: Finished difference Result 2350 states and 3369 transitions. [2020-08-18 20:55:05,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 20:55:05,240 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-18 20:55:05,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:55:05,256 INFO L225 Difference]: With dead ends: 2350 [2020-08-18 20:55:05,256 INFO L226 Difference]: Without dead ends: 1685 [2020-08-18 20:55:05,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-08-18 20:55:05,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2020-08-18 20:55:05,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1247. [2020-08-18 20:55:05,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1247 states. [2020-08-18 20:55:05,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 1522 transitions. [2020-08-18 20:55:05,542 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 1522 transitions. Word has length 88 [2020-08-18 20:55:05,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:55:05,542 INFO L479 AbstractCegarLoop]: Abstraction has 1247 states and 1522 transitions. [2020-08-18 20:55:05,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 20:55:05,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 1522 transitions. [2020-08-18 20:55:05,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 20:55:05,545 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:55:05,546 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:55:05,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 20:55:05,546 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:55:05,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:55:05,547 INFO L82 PathProgramCache]: Analyzing trace with hash 608275001, now seen corresponding path program 1 times [2020-08-18 20:55:05,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:55:05,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [437626380] [2020-08-18 20:55:05,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:55:05,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:05,838 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:55:05,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:55:05,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:05,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:55:05,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:05,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:55:05,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:05,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:55:05,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:05,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:55:05,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:05,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:55:05,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:05,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 20:55:05,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:05,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 20:55:05,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:05,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:55:05,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:05,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:55:05,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:05,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:55:05,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:05,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:55:05,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:05,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 20:55:05,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:05,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 20:55:05,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:05,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:55:05,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [437626380] [2020-08-18 20:55:05,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:55:05,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 20:55:05,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093256675] [2020-08-18 20:55:05,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 20:55:05,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:55:05,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 20:55:05,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 20:55:05,989 INFO L87 Difference]: Start difference. First operand 1247 states and 1522 transitions. Second operand 10 states. [2020-08-18 20:55:07,183 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:55:07,425 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 20:55:07,722 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:55:07,994 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:55:09,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:55:09,327 INFO L93 Difference]: Finished difference Result 2904 states and 3892 transitions. [2020-08-18 20:55:09,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 20:55:09,328 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-18 20:55:09,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:55:09,344 INFO L225 Difference]: With dead ends: 2904 [2020-08-18 20:55:09,344 INFO L226 Difference]: Without dead ends: 1685 [2020-08-18 20:55:09,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-18 20:55:09,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2020-08-18 20:55:09,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1287. [2020-08-18 20:55:09,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1287 states. [2020-08-18 20:55:09,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 1562 transitions. [2020-08-18 20:55:09,750 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 1562 transitions. Word has length 88 [2020-08-18 20:55:09,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:55:09,752 INFO L479 AbstractCegarLoop]: Abstraction has 1287 states and 1562 transitions. [2020-08-18 20:55:09,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 20:55:09,752 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 1562 transitions. [2020-08-18 20:55:09,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 20:55:09,756 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:55:09,756 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:55:09,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 20:55:09,757 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:55:09,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:55:09,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1309874875, now seen corresponding path program 1 times [2020-08-18 20:55:09,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:55:09,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2040504098] [2020-08-18 20:55:09,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:55:09,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:10,043 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:55:10,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:55:10,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:10,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:55:10,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:10,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:55:10,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:10,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:55:10,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:10,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:55:10,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:10,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:55:10,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:10,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 20:55:10,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:10,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 20:55:10,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:10,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:55:10,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:10,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:55:10,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:10,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:55:10,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:10,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:55:10,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:10,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 20:55:10,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:10,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 20:55:10,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:10,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:55:10,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2040504098] [2020-08-18 20:55:10,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:55:10,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 20:55:10,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230153617] [2020-08-18 20:55:10,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 20:55:10,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:55:10,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 20:55:10,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-18 20:55:10,209 INFO L87 Difference]: Start difference. First operand 1287 states and 1562 transitions. Second operand 12 states. [2020-08-18 20:55:10,706 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:55:10,935 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:55:11,156 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:55:11,916 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:55:12,179 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:55:12,410 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:55:13,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:55:13,747 INFO L93 Difference]: Finished difference Result 2600 states and 3450 transitions. [2020-08-18 20:55:13,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 20:55:13,748 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 88 [2020-08-18 20:55:13,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:55:13,758 INFO L225 Difference]: With dead ends: 2600 [2020-08-18 20:55:13,758 INFO L226 Difference]: Without dead ends: 1341 [2020-08-18 20:55:13,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-18 20:55:13,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2020-08-18 20:55:13,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1063. [2020-08-18 20:55:13,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1063 states. [2020-08-18 20:55:13,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 1258 transitions. [2020-08-18 20:55:14,000 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 1258 transitions. Word has length 88 [2020-08-18 20:55:14,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:55:14,000 INFO L479 AbstractCegarLoop]: Abstraction has 1063 states and 1258 transitions. [2020-08-18 20:55:14,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 20:55:14,001 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 1258 transitions. [2020-08-18 20:55:14,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-18 20:55:14,006 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:55:14,006 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:55:14,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 20:55:14,007 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:55:14,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:55:14,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1814435734, now seen corresponding path program 1 times [2020-08-18 20:55:14,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:55:14,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1078132567] [2020-08-18 20:55:14,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:55:14,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:14,321 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:55:14,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:55:14,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:14,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:55:14,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:14,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:55:14,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:14,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:55:14,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:14,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:55:14,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:14,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:55:14,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:14,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:55:14,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:14,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:55:14,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:14,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 20:55:14,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:14,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:55:14,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:14,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:55:14,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:14,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:55:14,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:14,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:55:14,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:14,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-18 20:55:14,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:14,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 20:55:14,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:14,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:55:14,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1078132567] [2020-08-18 20:55:14,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:55:14,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 20:55:14,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816740012] [2020-08-18 20:55:14,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 20:55:14,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:55:14,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 20:55:14,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-18 20:55:14,478 INFO L87 Difference]: Start difference. First operand 1063 states and 1258 transitions. Second operand 8 states. [2020-08-18 20:55:15,001 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:55:17,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:55:17,576 INFO L93 Difference]: Finished difference Result 2130 states and 2835 transitions. [2020-08-18 20:55:17,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 20:55:17,577 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 92 [2020-08-18 20:55:17,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:55:17,591 INFO L225 Difference]: With dead ends: 2130 [2020-08-18 20:55:17,591 INFO L226 Difference]: Without dead ends: 2127 [2020-08-18 20:55:17,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-18 20:55:17,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2127 states. [2020-08-18 20:55:17,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2127 to 1652. [2020-08-18 20:55:17,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1652 states. [2020-08-18 20:55:17,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1652 states to 1652 states and 1981 transitions. [2020-08-18 20:55:17,938 INFO L78 Accepts]: Start accepts. Automaton has 1652 states and 1981 transitions. Word has length 92 [2020-08-18 20:55:17,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:55:17,940 INFO L479 AbstractCegarLoop]: Abstraction has 1652 states and 1981 transitions. [2020-08-18 20:55:17,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 20:55:17,940 INFO L276 IsEmpty]: Start isEmpty. Operand 1652 states and 1981 transitions. [2020-08-18 20:55:17,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-18 20:55:17,950 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:55:17,951 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:55:17,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 20:55:17,952 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:55:17,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:55:17,952 INFO L82 PathProgramCache]: Analyzing trace with hash -374585462, now seen corresponding path program 1 times [2020-08-18 20:55:17,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:55:17,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1190627288] [2020-08-18 20:55:17,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:55:17,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:18,234 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:55:18,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:55:18,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:18,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:55:18,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:18,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:55:18,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:18,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:55:18,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:18,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:55:18,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:18,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:55:18,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:18,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:55:18,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:18,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:55:18,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:18,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 20:55:18,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:18,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:55:18,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:18,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:55:18,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:18,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:55:18,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:18,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:55:18,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:18,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:55:18,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:18,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 20:55:18,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:18,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:55:18,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:18,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 20:55:18,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:18,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 20:55:18,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:18,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 20:55:18,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:18,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:55:18,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:18,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:55:18,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:18,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 20:55:18,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:18,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:55:18,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:18,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-18 20:55:18,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:18,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-18 20:55:18,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:18,596 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-18 20:55:18,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1190627288] [2020-08-18 20:55:18,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:55:18,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-18 20:55:18,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583274601] [2020-08-18 20:55:18,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-18 20:55:18,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:55:18,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-18 20:55:18,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-18 20:55:18,599 INFO L87 Difference]: Start difference. First operand 1652 states and 1981 transitions. Second operand 19 states. [2020-08-18 20:55:19,532 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:55:20,033 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 20:55:20,293 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 20:55:20,541 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 20:55:21,285 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:55:21,908 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:55:22,296 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:55:24,668 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:55:24,925 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:55:25,205 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:55:25,474 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:55:25,728 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:55:26,032 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:55:26,332 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:55:26,576 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:55:27,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:55:27,477 INFO L93 Difference]: Finished difference Result 3563 states and 4503 transitions. [2020-08-18 20:55:27,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-08-18 20:55:27,477 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 150 [2020-08-18 20:55:27,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:55:27,491 INFO L225 Difference]: With dead ends: 3563 [2020-08-18 20:55:27,491 INFO L226 Difference]: Without dead ends: 1939 [2020-08-18 20:55:27,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 917 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=608, Invalid=2814, Unknown=0, NotChecked=0, Total=3422 [2020-08-18 20:55:27,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1939 states. [2020-08-18 20:55:27,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1939 to 1598. [2020-08-18 20:55:27,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1598 states. [2020-08-18 20:55:27,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1598 states to 1598 states and 1879 transitions. [2020-08-18 20:55:27,933 INFO L78 Accepts]: Start accepts. Automaton has 1598 states and 1879 transitions. Word has length 150 [2020-08-18 20:55:27,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:55:27,934 INFO L479 AbstractCegarLoop]: Abstraction has 1598 states and 1879 transitions. [2020-08-18 20:55:27,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-18 20:55:27,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1598 states and 1879 transitions. [2020-08-18 20:55:27,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-18 20:55:27,941 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:55:27,941 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-18 20:55:27,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 20:55:27,942 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:55:27,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:55:27,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1053600099, now seen corresponding path program 1 times [2020-08-18 20:55:27,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:55:27,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1005204503] [2020-08-18 20:55:27,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:55:28,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:28,291 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:55:28,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:55:28,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:28,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:55:28,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:28,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:55:28,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:28,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:55:28,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:28,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:55:28,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:28,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:55:28,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:28,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:55:28,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:28,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:55:28,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:28,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 20:55:28,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:28,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:55:28,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:28,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:55:28,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:28,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:55:28,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:28,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:55:28,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:28,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:55:28,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:28,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 20:55:28,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:28,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:55:28,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:28,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 20:55:28,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:28,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 20:55:28,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:28,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 20:55:28,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:28,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:55:28,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:28,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:55:28,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:28,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:55:28,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:28,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:55:28,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:28,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-18 20:55:28,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:28,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-18 20:55:28,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:28,522 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-08-18 20:55:28,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1005204503] [2020-08-18 20:55:28,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:55:28,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-18 20:55:28,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905346717] [2020-08-18 20:55:28,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-18 20:55:28,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:55:28,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-18 20:55:28,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-08-18 20:55:28,525 INFO L87 Difference]: Start difference. First operand 1598 states and 1879 transitions. Second operand 14 states. [2020-08-18 20:55:29,124 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:55:29,393 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:55:29,634 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:55:30,179 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:55:31,491 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:55:33,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:55:33,199 INFO L93 Difference]: Finished difference Result 2988 states and 3684 transitions. [2020-08-18 20:55:33,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-08-18 20:55:33,200 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 154 [2020-08-18 20:55:33,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:55:33,209 INFO L225 Difference]: With dead ends: 2988 [2020-08-18 20:55:33,210 INFO L226 Difference]: Without dead ends: 1734 [2020-08-18 20:55:33,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=323, Invalid=1399, Unknown=0, NotChecked=0, Total=1722 [2020-08-18 20:55:33,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2020-08-18 20:55:33,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1482. [2020-08-18 20:55:33,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1482 states. [2020-08-18 20:55:33,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 1650 transitions. [2020-08-18 20:55:33,481 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 1650 transitions. Word has length 154 [2020-08-18 20:55:33,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:55:33,482 INFO L479 AbstractCegarLoop]: Abstraction has 1482 states and 1650 transitions. [2020-08-18 20:55:33,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-18 20:55:33,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 1650 transitions. [2020-08-18 20:55:33,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-08-18 20:55:33,489 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:55:33,489 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:55:33,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 20:55:33,490 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:55:33,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:55:33,490 INFO L82 PathProgramCache]: Analyzing trace with hash -2018968461, now seen corresponding path program 1 times [2020-08-18 20:55:33,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:55:33,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [431746018] [2020-08-18 20:55:33,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:55:33,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:33,773 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:55:33,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:55:33,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:33,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:55:33,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:33,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:55:33,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:33,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:55:33,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:33,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:55:33,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:33,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:55:33,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:33,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:55:33,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:33,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:55:33,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:33,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 20:55:33,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:33,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:55:33,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:33,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:55:33,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:33,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:55:33,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:33,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:55:33,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:33,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:55:33,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:33,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 20:55:33,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:33,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:55:33,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:33,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 20:55:33,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:33,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-18 20:55:33,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:33,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:55:33,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:33,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-18 20:55:33,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:33,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:55:33,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:33,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:55:33,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:33,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:55:33,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:33,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:55:33,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:33,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-18 20:55:33,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:33,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-18 20:55:33,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:33,972 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-08-18 20:55:33,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [431746018] [2020-08-18 20:55:33,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:55:33,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 20:55:33,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773646959] [2020-08-18 20:55:33,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 20:55:33,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:55:33,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 20:55:33,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-18 20:55:33,975 INFO L87 Difference]: Start difference. First operand 1482 states and 1650 transitions. Second operand 10 states. [2020-08-18 20:55:34,891 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:55:36,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:55:36,502 INFO L93 Difference]: Finished difference Result 1918 states and 2270 transitions. [2020-08-18 20:55:36,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-18 20:55:36,502 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 160 [2020-08-18 20:55:36,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:55:36,504 INFO L225 Difference]: With dead ends: 1918 [2020-08-18 20:55:36,504 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 20:55:36,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=261, Invalid=795, Unknown=0, NotChecked=0, Total=1056 [2020-08-18 20:55:36,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 20:55:36,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 20:55:36,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 20:55:36,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 20:55:36,510 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 160 [2020-08-18 20:55:36,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:55:36,511 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 20:55:36,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 20:55:36,511 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 20:55:36,511 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 20:55:36,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 20:55:36,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.