/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product62.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 17:16:07,519 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 17:16:07,522 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 17:16:07,561 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 17:16:07,561 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 17:16:07,570 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 17:16:07,572 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 17:16:07,576 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 17:16:07,578 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 17:16:07,581 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 17:16:07,582 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 17:16:07,583 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 17:16:07,583 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 17:16:07,586 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 17:16:07,589 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 17:16:07,590 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 17:16:07,591 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 17:16:07,592 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 17:16:07,594 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 17:16:07,601 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 17:16:07,603 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 17:16:07,604 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 17:16:07,605 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 17:16:07,606 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 17:16:07,617 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 17:16:07,618 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 17:16:07,618 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 17:16:07,619 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 17:16:07,619 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 17:16:07,620 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 17:16:07,620 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 17:16:07,621 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 17:16:07,622 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 17:16:07,623 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 17:16:07,628 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 17:16:07,628 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 17:16:07,628 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 17:16:07,629 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 17:16:07,629 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 17:16:07,630 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 17:16:07,631 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 17:16:07,632 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 17:16:07,664 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 17:16:07,664 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 17:16:07,665 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 17:16:07,665 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 17:16:07,665 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 17:16:07,666 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 17:16:07,666 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 17:16:07,666 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 17:16:07,666 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 17:16:07,666 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 17:16:07,667 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 17:16:07,667 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 17:16:07,667 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 17:16:07,667 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 17:16:07,667 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 17:16:07,668 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 17:16:07,668 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 17:16:07,668 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 17:16:07,668 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 17:16:07,668 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 17:16:07,669 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 17:16:07,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 17:16:07,669 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 17:16:07,669 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 17:16:07,669 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 17:16:07,670 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 17:16:07,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 17:16:07,670 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 17:16:07,670 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 17:16:07,670 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; [2020-08-21 17:16:07,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 17:16:07,986 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 17:16:07,989 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 17:16:07,991 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 17:16:07,991 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 17:16:07,992 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product62.cil.c [2020-08-21 17:16:08,051 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f3dae7b07/57005b9780ce4c82bb8eb1d5a8e88e97/FLAG72d34df5b [2020-08-21 17:16:08,650 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 17:16:08,654 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product62.cil.c [2020-08-21 17:16:08,673 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f3dae7b07/57005b9780ce4c82bb8eb1d5a8e88e97/FLAG72d34df5b [2020-08-21 17:16:09,017 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f3dae7b07/57005b9780ce4c82bb8eb1d5a8e88e97 [2020-08-21 17:16:09,028 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 17:16:09,029 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 17:16:09,030 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 17:16:09,031 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 17:16:09,034 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 17:16:09,036 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:16:09" (1/1) ... [2020-08-21 17:16:09,039 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3210105d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:16:09, skipping insertion in model container [2020-08-21 17:16:09,039 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:16:09" (1/1) ... [2020-08-21 17:16:09,048 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 17:16:09,098 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 17:16:09,504 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:16:09,517 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 17:16:09,617 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:16:09,659 INFO L208 MainTranslator]: Completed translation [2020-08-21 17:16:09,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:16:09 WrapperNode [2020-08-21 17:16:09,660 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 17:16:09,661 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 17:16:09,661 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 17:16:09,661 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 17:16:09,675 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:16:09" (1/1) ... [2020-08-21 17:16:09,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:16:09" (1/1) ... [2020-08-21 17:16:09,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:16:09" (1/1) ... [2020-08-21 17:16:09,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:16:09" (1/1) ... [2020-08-21 17:16:09,727 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:16:09" (1/1) ... [2020-08-21 17:16:09,738 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:16:09" (1/1) ... [2020-08-21 17:16:09,743 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:16:09" (1/1) ... [2020-08-21 17:16:09,751 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 17:16:09,751 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 17:16:09,752 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 17:16:09,752 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 17:16:09,753 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:16:09" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 17:16:09,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 17:16:09,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 17:16:09,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 17:16:09,842 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 17:16:09,842 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 17:16:09,842 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 17:16:09,842 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 17:16:09,842 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 17:16:09,842 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-21 17:16:09,843 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 17:16:09,844 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 17:16:09,844 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 17:16:09,844 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 17:16:09,844 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 17:16:09,844 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 17:16:09,845 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 17:16:09,845 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 17:16:09,845 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-21 17:16:09,846 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-21 17:16:09,846 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-21 17:16:09,846 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 17:16:09,846 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 17:16:09,846 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 17:16:09,846 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 17:16:09,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 17:16:09,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 17:16:09,848 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 17:16:09,848 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 17:16:09,848 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 17:16:09,848 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 17:16:09,848 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 17:16:09,849 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 17:16:09,849 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 17:16:09,849 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 17:16:09,849 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 17:16:09,849 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 17:16:09,849 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 17:16:09,849 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 17:16:09,850 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 17:16:09,850 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 17:16:09,850 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 17:16:09,850 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 17:16:09,850 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 17:16:09,851 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 17:16:09,851 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 17:16:09,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 17:16:09,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 17:16:09,851 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 17:16:09,852 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 17:16:09,852 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 17:16:09,852 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 17:16:09,852 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 17:16:09,852 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 17:16:09,853 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 17:16:09,853 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 17:16:09,853 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 17:16:09,853 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 17:16:09,854 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 17:16:09,854 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 17:16:09,854 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-21 17:16:09,854 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-21 17:16:09,854 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 17:16:09,855 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 17:16:09,855 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 17:16:09,855 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 17:16:09,855 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 17:16:09,855 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 17:16:09,855 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 17:16:09,856 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-21 17:16:09,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 17:16:09,856 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 17:16:09,857 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 17:16:09,857 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-21 17:16:09,858 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 17:16:09,858 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 17:16:09,859 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 17:16:09,859 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 17:16:09,859 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 17:16:09,859 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 17:16:09,859 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 17:16:09,860 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 17:16:09,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 17:16:09,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 17:16:09,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 17:16:09,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 17:16:09,862 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 17:16:09,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 17:16:09,862 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 17:16:09,862 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 17:16:09,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 17:16:09,862 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 17:16:09,863 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 17:16:09,863 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 17:16:09,863 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 17:16:09,863 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 17:16:09,863 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 17:16:09,864 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 17:16:09,864 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 17:16:09,864 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 17:16:09,864 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 17:16:09,864 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 17:16:09,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 17:16:09,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 17:16:09,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 17:16:11,074 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 17:16:11,075 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 17:16:11,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:16:11 BoogieIcfgContainer [2020-08-21 17:16:11,086 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 17:16:11,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 17:16:11,088 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 17:16:11,091 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 17:16:11,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 05:16:09" (1/3) ... [2020-08-21 17:16:11,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39a91f1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:16:11, skipping insertion in model container [2020-08-21 17:16:11,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:16:09" (2/3) ... [2020-08-21 17:16:11,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39a91f1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:16:11, skipping insertion in model container [2020-08-21 17:16:11,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:16:11" (3/3) ... [2020-08-21 17:16:11,096 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product62.cil.c [2020-08-21 17:16:11,104 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 17:16:11,113 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 17:16:11,127 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 17:16:11,150 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 17:16:11,151 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 17:16:11,151 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 17:16:11,151 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 17:16:11,152 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 17:16:11,152 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 17:16:11,152 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 17:16:11,153 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 17:16:11,175 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states. [2020-08-21 17:16:11,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 17:16:11,186 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:16:11,188 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:16:11,188 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:16:11,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:16:11,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1456889578, now seen corresponding path program 1 times [2020-08-21 17:16:11,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:16:11,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493476635] [2020-08-21 17:16:11,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:16:11,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:11,936 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:16:11,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:11,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:11,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:16:11,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:11,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:16:11,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:11,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:16:11,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:11,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:16:11,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:12,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:16:12,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:12,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 17:16:12,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:12,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:12,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:12,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 17:16:12,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:12,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 17:16:12,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:12,036 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 17:16:12,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493476635] [2020-08-21 17:16:12,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:16:12,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 17:16:12,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593081267] [2020-08-21 17:16:12,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 17:16:12,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:16:12,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 17:16:12,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 17:16:12,064 INFO L87 Difference]: Start difference. First operand 210 states. Second operand 4 states. [2020-08-21 17:16:13,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:16:13,340 INFO L93 Difference]: Finished difference Result 367 states and 468 transitions. [2020-08-21 17:16:13,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 17:16:13,342 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-21 17:16:13,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:16:13,358 INFO L225 Difference]: With dead ends: 367 [2020-08-21 17:16:13,358 INFO L226 Difference]: Without dead ends: 201 [2020-08-21 17:16:13,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 17:16:13,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-08-21 17:16:13,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 167. [2020-08-21 17:16:13,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-08-21 17:16:13,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 197 transitions. [2020-08-21 17:16:13,469 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 197 transitions. Word has length 59 [2020-08-21 17:16:13,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:16:13,469 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 197 transitions. [2020-08-21 17:16:13,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 17:16:13,470 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 197 transitions. [2020-08-21 17:16:13,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-21 17:16:13,473 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:16:13,474 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:16:13,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 17:16:13,474 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:16:13,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:16:13,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1129690590, now seen corresponding path program 1 times [2020-08-21 17:16:13,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:16:13,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747827155] [2020-08-21 17:16:13,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:16:13,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:13,760 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:16:13,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:13,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:13,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:16:13,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:13,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:16:13,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:13,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:16:13,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:13,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:16:13,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:13,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:16:13,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:13,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 17:16:13,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:13,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:13,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:13,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 17:16:13,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:13,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 17:16:13,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:13,816 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 17:16:13,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747827155] [2020-08-21 17:16:13,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:16:13,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 17:16:13,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429081626] [2020-08-21 17:16:13,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 17:16:13,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:16:13,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 17:16:13,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 17:16:13,820 INFO L87 Difference]: Start difference. First operand 167 states and 197 transitions. Second operand 5 states. [2020-08-21 17:16:14,272 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:16:15,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:16:15,301 INFO L93 Difference]: Finished difference Result 308 states and 376 transitions. [2020-08-21 17:16:15,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 17:16:15,302 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-21 17:16:15,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:16:15,306 INFO L225 Difference]: With dead ends: 308 [2020-08-21 17:16:15,306 INFO L226 Difference]: Without dead ends: 191 [2020-08-21 17:16:15,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 17:16:15,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-08-21 17:16:15,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 158. [2020-08-21 17:16:15,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-08-21 17:16:15,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 185 transitions. [2020-08-21 17:16:15,353 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 185 transitions. Word has length 60 [2020-08-21 17:16:15,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:16:15,353 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 185 transitions. [2020-08-21 17:16:15,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 17:16:15,354 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 185 transitions. [2020-08-21 17:16:15,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-21 17:16:15,355 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:16:15,356 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:16:15,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 17:16:15,356 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:16:15,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:16:15,357 INFO L82 PathProgramCache]: Analyzing trace with hash -651026134, now seen corresponding path program 1 times [2020-08-21 17:16:15,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:16:15,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1929661875] [2020-08-21 17:16:15,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:16:15,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:15,696 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:16:15,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:15,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:15,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:16:15,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:15,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:16:15,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:15,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:16:15,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:15,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:16:15,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:15,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:16:15,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:15,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 17:16:15,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:15,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:15,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:15,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 17:16:15,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:15,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 17:16:15,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:15,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 17:16:15,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1929661875] [2020-08-21 17:16:15,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:16:15,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 17:16:15,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479637518] [2020-08-21 17:16:15,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 17:16:15,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:16:15,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 17:16:15,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 17:16:15,827 INFO L87 Difference]: Start difference. First operand 158 states and 185 transitions. Second operand 9 states. [2020-08-21 17:16:16,167 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:16:16,485 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:16:16,758 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:16:16,996 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:16:18,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:16:18,384 INFO L93 Difference]: Finished difference Result 321 states and 395 transitions. [2020-08-21 17:16:18,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 17:16:18,386 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-21 17:16:18,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:16:18,390 INFO L225 Difference]: With dead ends: 321 [2020-08-21 17:16:18,391 INFO L226 Difference]: Without dead ends: 191 [2020-08-21 17:16:18,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-21 17:16:18,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-08-21 17:16:18,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 158. [2020-08-21 17:16:18,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-08-21 17:16:18,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 184 transitions. [2020-08-21 17:16:18,433 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 184 transitions. Word has length 65 [2020-08-21 17:16:18,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:16:18,434 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 184 transitions. [2020-08-21 17:16:18,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 17:16:18,434 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 184 transitions. [2020-08-21 17:16:18,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-21 17:16:18,436 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:16:18,436 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:16:18,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 17:16:18,437 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:16:18,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:16:18,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1717523051, now seen corresponding path program 1 times [2020-08-21 17:16:18,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:16:18,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231214837] [2020-08-21 17:16:18,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:16:18,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:18,726 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:16:18,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:18,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:18,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:16:18,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:18,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:16:18,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:18,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:16:18,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:18,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:16:18,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:18,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:16:18,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:18,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 17:16:18,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:18,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:18,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:18,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 17:16:18,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:18,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:18,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:18,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:18,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:18,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:18,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:18,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-21 17:16:18,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:18,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 17:16:18,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:18,915 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 17:16:18,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1231214837] [2020-08-21 17:16:18,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:16:18,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 17:16:18,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865339464] [2020-08-21 17:16:18,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 17:16:18,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:16:18,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 17:16:18,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 17:16:18,920 INFO L87 Difference]: Start difference. First operand 158 states and 184 transitions. Second operand 7 states. [2020-08-21 17:16:19,250 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:16:20,855 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:16:21,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:16:21,522 INFO L93 Difference]: Finished difference Result 439 states and 543 transitions. [2020-08-21 17:16:21,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 17:16:21,523 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 83 [2020-08-21 17:16:21,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:16:21,527 INFO L225 Difference]: With dead ends: 439 [2020-08-21 17:16:21,527 INFO L226 Difference]: Without dead ends: 309 [2020-08-21 17:16:21,529 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-21 17:16:21,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-08-21 17:16:21,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 263. [2020-08-21 17:16:21,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-08-21 17:16:21,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 298 transitions. [2020-08-21 17:16:21,604 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 298 transitions. Word has length 83 [2020-08-21 17:16:21,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:16:21,605 INFO L479 AbstractCegarLoop]: Abstraction has 263 states and 298 transitions. [2020-08-21 17:16:21,605 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 17:16:21,605 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 298 transitions. [2020-08-21 17:16:21,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-21 17:16:21,607 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:16:21,607 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:16:21,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 17:16:21,608 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:16:21,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:16:21,608 INFO L82 PathProgramCache]: Analyzing trace with hash 119397721, now seen corresponding path program 1 times [2020-08-21 17:16:21,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:16:21,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1141176952] [2020-08-21 17:16:21,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:16:21,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:21,894 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:16:21,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:21,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:21,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:16:21,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:21,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:16:21,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:21,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:16:21,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:21,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:16:21,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:21,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:16:21,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:21,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 17:16:21,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:21,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:21,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:21,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 17:16:21,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:21,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:21,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:21,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:21,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:21,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:21,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:21,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:21,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:16:21,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:21,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 17:16:21,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:21,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 17:16:21,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:22,022 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 17:16:22,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1141176952] [2020-08-21 17:16:22,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:16:22,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 17:16:22,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138043356] [2020-08-21 17:16:22,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 17:16:22,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:16:22,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 17:16:22,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 17:16:22,025 INFO L87 Difference]: Start difference. First operand 263 states and 298 transitions. Second operand 9 states. [2020-08-21 17:16:22,369 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:16:23,051 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:16:23,960 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:16:24,239 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:16:24,672 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:16:24,907 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:16:25,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:16:25,497 INFO L93 Difference]: Finished difference Result 543 states and 648 transitions. [2020-08-21 17:16:25,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 17:16:25,498 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 97 [2020-08-21 17:16:25,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:16:25,501 INFO L225 Difference]: With dead ends: 543 [2020-08-21 17:16:25,501 INFO L226 Difference]: Without dead ends: 308 [2020-08-21 17:16:25,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 17:16:25,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-08-21 17:16:25,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 262. [2020-08-21 17:16:25,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-08-21 17:16:25,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 295 transitions. [2020-08-21 17:16:25,555 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 295 transitions. Word has length 97 [2020-08-21 17:16:25,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:16:25,556 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 295 transitions. [2020-08-21 17:16:25,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 17:16:25,556 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 295 transitions. [2020-08-21 17:16:25,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-08-21 17:16:25,557 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:16:25,558 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:16:25,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 17:16:25,558 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:16:25,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:16:25,559 INFO L82 PathProgramCache]: Analyzing trace with hash 299468705, now seen corresponding path program 1 times [2020-08-21 17:16:25,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:16:25,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [386638104] [2020-08-21 17:16:25,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:16:25,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:25,789 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:16:25,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:25,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:25,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:16:25,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:25,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:16:25,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:25,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:16:25,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:25,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:16:25,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:25,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:16:25,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:25,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 17:16:25,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:25,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:25,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:25,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 17:16:25,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:25,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:25,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:25,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:25,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:25,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:25,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:25,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:25,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:25,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:16:25,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:25,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:25,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:25,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:25,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:25,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:16:25,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:25,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 17:16:25,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:25,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-21 17:16:25,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:25,932 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 17:16:25,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [386638104] [2020-08-21 17:16:25,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:16:25,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 17:16:25,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475437634] [2020-08-21 17:16:25,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 17:16:25,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:16:25,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 17:16:25,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 17:16:25,935 INFO L87 Difference]: Start difference. First operand 262 states and 295 transitions. Second operand 9 states. [2020-08-21 17:16:26,905 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:16:27,130 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 17:16:27,373 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:16:27,624 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:16:28,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:16:28,554 INFO L93 Difference]: Finished difference Result 543 states and 653 transitions. [2020-08-21 17:16:28,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 17:16:28,554 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 113 [2020-08-21 17:16:28,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:16:28,556 INFO L225 Difference]: With dead ends: 543 [2020-08-21 17:16:28,557 INFO L226 Difference]: Without dead ends: 309 [2020-08-21 17:16:28,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 17:16:28,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-08-21 17:16:28,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 267. [2020-08-21 17:16:28,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-08-21 17:16:28,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 300 transitions. [2020-08-21 17:16:28,607 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 300 transitions. Word has length 113 [2020-08-21 17:16:28,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:16:28,607 INFO L479 AbstractCegarLoop]: Abstraction has 267 states and 300 transitions. [2020-08-21 17:16:28,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 17:16:28,607 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 300 transitions. [2020-08-21 17:16:28,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-08-21 17:16:28,609 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:16:28,609 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:16:28,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 17:16:28,609 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:16:28,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:16:28,610 INFO L82 PathProgramCache]: Analyzing trace with hash -2056336545, now seen corresponding path program 1 times [2020-08-21 17:16:28,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:16:28,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1764380237] [2020-08-21 17:16:28,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:16:28,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:28,887 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:16:28,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:28,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:28,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:16:28,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:28,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:16:28,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:28,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:16:28,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:28,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:16:28,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:28,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:16:28,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:28,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 17:16:28,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:28,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:28,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:28,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 17:16:28,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:28,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:28,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:28,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:28,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:28,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:28,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:28,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:28,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:28,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:16:29,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:29,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:29,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:29,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:29,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:29,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:16:29,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:29,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 17:16:29,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:29,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-21 17:16:29,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:29,031 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 17:16:29,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1764380237] [2020-08-21 17:16:29,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:16:29,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 17:16:29,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957527246] [2020-08-21 17:16:29,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 17:16:29,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:16:29,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 17:16:29,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 17:16:29,034 INFO L87 Difference]: Start difference. First operand 267 states and 300 transitions. Second operand 11 states. [2020-08-21 17:16:29,504 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:16:29,776 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:16:30,026 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:16:30,716 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:16:30,961 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:16:31,197 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:16:32,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:16:32,286 INFO L93 Difference]: Finished difference Result 553 states and 664 transitions. [2020-08-21 17:16:32,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 17:16:32,286 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 113 [2020-08-21 17:16:32,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:16:32,289 INFO L225 Difference]: With dead ends: 553 [2020-08-21 17:16:32,289 INFO L226 Difference]: Without dead ends: 314 [2020-08-21 17:16:32,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 17:16:32,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-08-21 17:16:32,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 271. [2020-08-21 17:16:32,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-08-21 17:16:32,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 304 transitions. [2020-08-21 17:16:32,352 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 304 transitions. Word has length 113 [2020-08-21 17:16:32,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:16:32,353 INFO L479 AbstractCegarLoop]: Abstraction has 271 states and 304 transitions. [2020-08-21 17:16:32,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 17:16:32,353 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 304 transitions. [2020-08-21 17:16:32,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-08-21 17:16:32,357 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:16:32,357 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:16:32,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 17:16:32,358 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:16:32,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:16:32,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1287166530, now seen corresponding path program 1 times [2020-08-21 17:16:32,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:16:32,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1474247130] [2020-08-21 17:16:32,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:16:32,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:32,665 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:16:32,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:32,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:32,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:16:32,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:32,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:16:32,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:32,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:16:32,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:32,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:16:32,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:32,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:16:32,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:32,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 17:16:32,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:32,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:32,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:32,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 17:16:32,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:32,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:32,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:32,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:32,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:32,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:32,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:32,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:32,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:32,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:16:32,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:32,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:32,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:32,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:32,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:32,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:16:32,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:32,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 17:16:32,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:32,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-21 17:16:32,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:32,832 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 17:16:32,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1474247130] [2020-08-21 17:16:32,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:16:32,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 17:16:32,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776016667] [2020-08-21 17:16:32,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 17:16:32,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:16:32,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 17:16:32,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 17:16:32,835 INFO L87 Difference]: Start difference. First operand 271 states and 304 transitions. Second operand 7 states. [2020-08-21 17:16:33,208 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:16:33,760 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:16:35,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:16:35,829 INFO L93 Difference]: Finished difference Result 745 states and 915 transitions. [2020-08-21 17:16:35,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 17:16:35,830 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2020-08-21 17:16:35,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:16:35,834 INFO L225 Difference]: With dead ends: 745 [2020-08-21 17:16:35,834 INFO L226 Difference]: Without dead ends: 502 [2020-08-21 17:16:35,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 45 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-21 17:16:35,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-08-21 17:16:35,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 460. [2020-08-21 17:16:35,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2020-08-21 17:16:35,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 532 transitions. [2020-08-21 17:16:35,915 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 532 transitions. Word has length 113 [2020-08-21 17:16:35,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:16:35,916 INFO L479 AbstractCegarLoop]: Abstraction has 460 states and 532 transitions. [2020-08-21 17:16:35,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 17:16:35,916 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 532 transitions. [2020-08-21 17:16:35,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-08-21 17:16:35,918 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:16:35,918 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:16:35,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 17:16:35,918 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:16:35,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:16:35,919 INFO L82 PathProgramCache]: Analyzing trace with hash -803017404, now seen corresponding path program 1 times [2020-08-21 17:16:35,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:16:35,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [191394883] [2020-08-21 17:16:35,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:16:35,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:36,275 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:16:36,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:36,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:36,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:16:36,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:36,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:16:36,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:36,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:16:36,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:36,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:16:36,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:36,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:16:36,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:36,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 17:16:36,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:36,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 17:16:36,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:36,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:36,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:36,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-21 17:16:36,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:36,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:36,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:36,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:36,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:36,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:36,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:36,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:36,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:36,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:16:36,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:36,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:36,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:36,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:36,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:36,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:16:36,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:36,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-21 17:16:36,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:36,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-21 17:16:36,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:36,438 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 17:16:36,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [191394883] [2020-08-21 17:16:36,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:16:36,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 17:16:36,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447900201] [2020-08-21 17:16:36,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 17:16:36,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:16:36,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 17:16:36,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-21 17:16:36,440 INFO L87 Difference]: Start difference. First operand 460 states and 532 transitions. Second operand 12 states. [2020-08-21 17:16:36,800 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:16:37,511 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:16:38,651 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:16:38,952 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:16:39,197 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 17:16:39,485 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:16:39,772 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:16:41,100 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:16:41,349 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:16:42,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:16:42,269 INFO L93 Difference]: Finished difference Result 1281 states and 1569 transitions. [2020-08-21 17:16:42,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-21 17:16:42,270 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 117 [2020-08-21 17:16:42,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:16:42,275 INFO L225 Difference]: With dead ends: 1281 [2020-08-21 17:16:42,275 INFO L226 Difference]: Without dead ends: 928 [2020-08-21 17:16:42,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-21 17:16:42,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2020-08-21 17:16:42,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 803. [2020-08-21 17:16:42,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-08-21 17:16:42,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 919 transitions. [2020-08-21 17:16:42,402 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 919 transitions. Word has length 117 [2020-08-21 17:16:42,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:16:42,403 INFO L479 AbstractCegarLoop]: Abstraction has 803 states and 919 transitions. [2020-08-21 17:16:42,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 17:16:42,403 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 919 transitions. [2020-08-21 17:16:42,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-08-21 17:16:42,406 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:16:42,407 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:16:42,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 17:16:42,407 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:16:42,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:16:42,408 INFO L82 PathProgramCache]: Analyzing trace with hash -394036424, now seen corresponding path program 1 times [2020-08-21 17:16:42,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:16:42,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307523943] [2020-08-21 17:16:42,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:16:42,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:42,770 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:16:42,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:42,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:42,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:16:42,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:42,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:16:42,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:42,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:16:42,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:42,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:16:42,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:42,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:16:42,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:42,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 17:16:42,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:42,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 17:16:42,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:42,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:42,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:42,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:42,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:42,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 17:16:42,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:42,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:42,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:42,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:42,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:42,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:42,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:42,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:42,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:42,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:16:42,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:42,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:42,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:42,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:42,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:42,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:16:42,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:42,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-21 17:16:42,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:42,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:42,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:42,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-21 17:16:42,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:43,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:43,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:43,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-21 17:16:43,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:43,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 17:16:43,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:43,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:43,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:43,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:43,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:43,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 17:16:43,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:43,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:43,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:43,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:43,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:43,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 17:16:43,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:43,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:43,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:43,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2020-08-21 17:16:43,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:43,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-08-21 17:16:43,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:43,184 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 22 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-08-21 17:16:43,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307523943] [2020-08-21 17:16:43,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:16:43,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 17:16:43,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921316627] [2020-08-21 17:16:43,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 17:16:43,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:16:43,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 17:16:43,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-21 17:16:43,187 INFO L87 Difference]: Start difference. First operand 803 states and 919 transitions. Second operand 16 states. [2020-08-21 17:16:43,744 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 17:16:44,078 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 17:16:44,342 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 17:16:44,591 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 17:16:45,239 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-21 17:16:45,515 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 17:16:45,929 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-08-21 17:16:46,786 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-21 17:16:47,335 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:16:47,801 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-21 17:16:48,421 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-08-21 17:16:48,904 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 193 [2020-08-21 17:16:49,213 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 17:16:49,791 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:16:50,206 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-21 17:16:50,871 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 17:16:51,412 WARN L193 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 194 [2020-08-21 17:16:52,136 WARN L193 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 195 [2020-08-21 17:16:52,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:16:52,700 INFO L93 Difference]: Finished difference Result 1744 states and 2052 transitions. [2020-08-21 17:16:52,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-08-21 17:16:52,700 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 195 [2020-08-21 17:16:52,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:16:52,707 INFO L225 Difference]: With dead ends: 1744 [2020-08-21 17:16:52,707 INFO L226 Difference]: Without dead ends: 1044 [2020-08-21 17:16:52,711 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=618, Invalid=2462, Unknown=0, NotChecked=0, Total=3080 [2020-08-21 17:16:52,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2020-08-21 17:16:52,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 951. [2020-08-21 17:16:52,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 951 states. [2020-08-21 17:16:52,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1097 transitions. [2020-08-21 17:16:52,895 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1097 transitions. Word has length 195 [2020-08-21 17:16:52,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:16:52,896 INFO L479 AbstractCegarLoop]: Abstraction has 951 states and 1097 transitions. [2020-08-21 17:16:52,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 17:16:52,896 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1097 transitions. [2020-08-21 17:16:52,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-08-21 17:16:52,903 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:16:52,903 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:16:52,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 17:16:52,904 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:16:52,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:16:52,904 INFO L82 PathProgramCache]: Analyzing trace with hash -604725475, now seen corresponding path program 1 times [2020-08-21 17:16:52,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:16:52,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566632811] [2020-08-21 17:16:52,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:16:52,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,259 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:16:53,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:53,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:16:53,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:16:53,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:16:53,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:16:53,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:16:53,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 17:16:53,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 17:16:53,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:53,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:53,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 17:16:53,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:53,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:53,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:53,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:53,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:16:53,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:53,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:53,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:16:53,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-21 17:16:53,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:53,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-21 17:16:53,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:53,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:53,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:16:53,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 17:16:53,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:53,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:53,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 17:16:53,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:53,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:53,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 17:16:53,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:53,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 17:16:53,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:53,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-08-21 17:16:53,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:53,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:53,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:16:53,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 17:16:53,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:53,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:53,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 17:16:53,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 17:16:53,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:53,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-08-21 17:16:53,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:16:53,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-08-21 17:16:53,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:53,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:53,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:16:53,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:53,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:16:53,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:53,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:16:53,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:16:53,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-08-21 17:16:53,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-08-21 17:16:53,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:16:53,932 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 77 proven. 21 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2020-08-21 17:16:53,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566632811] [2020-08-21 17:16:53,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:16:53,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 17:16:53,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969830544] [2020-08-21 17:16:53,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 17:16:53,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:16:53,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 17:16:53,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2020-08-21 17:16:53,937 INFO L87 Difference]: Start difference. First operand 951 states and 1097 transitions. Second operand 16 states. [2020-08-21 17:16:54,615 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:16:55,422 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:16:56,581 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:16:56,899 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:16:57,180 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:16:57,438 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 17:16:57,762 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 17:16:58,032 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 17:16:59,827 WARN L193 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 191 [2020-08-21 17:17:00,343 WARN L193 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 191 [2020-08-21 17:17:00,847 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 192 [2020-08-21 17:17:01,330 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 192 [2020-08-21 17:17:02,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:17:02,363 INFO L93 Difference]: Finished difference Result 2689 states and 3184 transitions. [2020-08-21 17:17:02,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-08-21 17:17:02,364 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 331 [2020-08-21 17:17:02,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:17:02,375 INFO L225 Difference]: With dead ends: 2689 [2020-08-21 17:17:02,376 INFO L226 Difference]: Without dead ends: 1774 [2020-08-21 17:17:02,380 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=376, Invalid=1346, Unknown=0, NotChecked=0, Total=1722 [2020-08-21 17:17:02,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1774 states. [2020-08-21 17:17:02,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1774 to 1728. [2020-08-21 17:17:02,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1728 states. [2020-08-21 17:17:02,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1728 states to 1728 states and 1964 transitions. [2020-08-21 17:17:02,765 INFO L78 Accepts]: Start accepts. Automaton has 1728 states and 1964 transitions. Word has length 331 [2020-08-21 17:17:02,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:17:02,769 INFO L479 AbstractCegarLoop]: Abstraction has 1728 states and 1964 transitions. [2020-08-21 17:17:02,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 17:17:02,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1728 states and 1964 transitions. [2020-08-21 17:17:02,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-08-21 17:17:02,783 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:17:02,784 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:17:02,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 17:17:02,784 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:17:02,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:17:02,785 INFO L82 PathProgramCache]: Analyzing trace with hash 414679617, now seen corresponding path program 1 times [2020-08-21 17:17:02,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:17:02,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [996422601] [2020-08-21 17:17:02,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:17:02,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,117 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:17:03,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:17:03,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:17:03,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:17:03,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:17:03,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:17:03,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:17:03,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 17:17:03,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 17:17:03,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:17:03,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:17:03,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 17:17:03,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:17:03,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:17:03,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:17:03,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:17:03,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:17:03,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:17:03,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:17:03,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:17:03,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-21 17:17:03,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:17:03,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-21 17:17:03,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:17:03,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:17:03,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:17:03,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 17:17:03,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:17:03,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:17:03,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 17:17:03,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:17:03,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:17:03,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 17:17:03,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:17:03,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 17:17:03,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:17:03,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-21 17:17:03,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-08-21 17:17:03,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:17:03,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:17:03,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:17:03,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 17:17:03,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:17:03,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:17:03,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 17:17:03,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 17:17:03,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:17:03,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-21 17:17:03,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:17:03,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2020-08-21 17:17:03,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:17:03,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:17:03,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:17:03,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:17:03,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:17:03,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:17:03,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:17:03,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:17:03,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-08-21 17:17:03,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-21 17:17:03,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:03,712 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 92 proven. 3 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2020-08-21 17:17:03,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [996422601] [2020-08-21 17:17:03,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:17:03,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-21 17:17:03,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301018186] [2020-08-21 17:17:03,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-21 17:17:03,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:17:03,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-21 17:17:03,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2020-08-21 17:17:03,718 INFO L87 Difference]: Start difference. First operand 1728 states and 1964 transitions. Second operand 19 states. [2020-08-21 17:17:04,711 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:17:05,150 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 17:17:05,386 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 17:17:05,625 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 17:17:06,315 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189