/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product43.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 12:03:07,570 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 12:03:07,573 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 12:03:07,606 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 12:03:07,606 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 12:03:07,616 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 12:03:07,618 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 12:03:07,622 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 12:03:07,625 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 12:03:07,628 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 12:03:07,629 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 12:03:07,630 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 12:03:07,630 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 12:03:07,633 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 12:03:07,635 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 12:03:07,637 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 12:03:07,638 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 12:03:07,639 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 12:03:07,641 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 12:03:07,649 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 12:03:07,651 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 12:03:07,652 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 12:03:07,653 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 12:03:07,653 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 12:03:07,669 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 12:03:07,669 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 12:03:07,669 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 12:03:07,671 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 12:03:07,673 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 12:03:07,674 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 12:03:07,674 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 12:03:07,675 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 12:03:07,679 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 12:03:07,680 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 12:03:07,681 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 12:03:07,684 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 12:03:07,685 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 12:03:07,685 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 12:03:07,685 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 12:03:07,686 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 12:03:07,687 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 12:03:07,688 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 12:03:07,728 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 12:03:07,728 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 12:03:07,730 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 12:03:07,730 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 12:03:07,730 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 12:03:07,730 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 12:03:07,731 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 12:03:07,731 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 12:03:07,731 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 12:03:07,731 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 12:03:07,732 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 12:03:07,732 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 12:03:07,732 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 12:03:07,733 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 12:03:07,733 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 12:03:07,733 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 12:03:07,733 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 12:03:07,734 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 12:03:07,734 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 12:03:07,734 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 12:03:07,734 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 12:03:07,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 12:03:07,735 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 12:03:07,735 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 12:03:07,735 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 12:03:07,735 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 12:03:07,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 12:03:07,736 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 12:03:07,736 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 12:03:07,736 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 12:03:08,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 12:03:08,077 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 12:03:08,083 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 12:03:08,084 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 12:03:08,084 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 12:03:08,085 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product43.cil.c [2020-08-18 12:03:08,147 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4fe81f4e1/c10dc89337374658bb8baee4797fdce1/FLAGe55e04680 [2020-08-18 12:03:08,693 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 12:03:08,694 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product43.cil.c [2020-08-18 12:03:08,708 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4fe81f4e1/c10dc89337374658bb8baee4797fdce1/FLAGe55e04680 [2020-08-18 12:03:09,001 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4fe81f4e1/c10dc89337374658bb8baee4797fdce1 [2020-08-18 12:03:09,012 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 12:03:09,014 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 12:03:09,015 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 12:03:09,015 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 12:03:09,019 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 12:03:09,020 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 12:03:09" (1/1) ... [2020-08-18 12:03:09,023 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38917b5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:03:09, skipping insertion in model container [2020-08-18 12:03:09,023 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 12:03:09" (1/1) ... [2020-08-18 12:03:09,031 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 12:03:09,099 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 12:03:09,522 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 12:03:09,544 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 12:03:09,670 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 12:03:09,704 INFO L208 MainTranslator]: Completed translation [2020-08-18 12:03:09,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:03:09 WrapperNode [2020-08-18 12:03:09,705 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 12:03:09,705 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 12:03:09,706 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 12:03:09,706 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 12:03:09,716 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:03:09" (1/1) ... [2020-08-18 12:03:09,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:03:09" (1/1) ... [2020-08-18 12:03:09,735 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:03:09" (1/1) ... [2020-08-18 12:03:09,736 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:03:09" (1/1) ... [2020-08-18 12:03:09,767 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:03:09" (1/1) ... [2020-08-18 12:03:09,777 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:03:09" (1/1) ... [2020-08-18 12:03:09,783 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:03:09" (1/1) ... [2020-08-18 12:03:09,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 12:03:09,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 12:03:09,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 12:03:09,791 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 12:03:09,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:03:09" (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 [2020-08-18 12:03:09,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 12:03:09,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 12:03:09,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 12:03:09,880 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 12:03:09,880 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 12:03:09,880 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 12:03:09,881 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 12:03:09,881 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 12:03:09,881 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 12:03:09,881 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 12:03:09,881 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 12:03:09,881 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 12:03:09,881 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 12:03:09,882 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 12:03:09,882 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 12:03:09,882 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 12:03:09,882 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 12:03:09,882 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 12:03:09,882 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-18 12:03:09,883 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 12:03:09,883 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 12:03:09,883 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 12:03:09,883 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 12:03:09,883 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 12:03:09,883 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 12:03:09,883 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 12:03:09,884 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 12:03:09,884 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 12:03:09,884 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 12:03:09,884 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 12:03:09,884 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 12:03:09,884 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 12:03:09,885 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 12:03:09,885 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-18 12:03:09,885 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-18 12:03:09,885 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-18 12:03:09,885 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 12:03:09,886 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 12:03:09,886 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 12:03:09,886 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 12:03:09,886 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 12:03:09,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 12:03:09,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 12:03:09,887 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 12:03:09,887 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 12:03:09,887 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 12:03:09,887 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 12:03:09,887 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 12:03:09,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 12:03:09,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 12:03:09,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 12:03:09,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 12:03:09,888 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 12:03:09,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 12:03:09,888 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 12:03:09,889 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 12:03:09,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 12:03:09,889 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 12:03:09,889 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 12:03:09,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 12:03:09,889 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 12:03:09,890 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 12:03:09,890 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 12:03:09,890 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 12:03:09,890 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 12:03:09,890 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 12:03:09,890 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 12:03:09,890 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 12:03:09,891 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-18 12:03:09,891 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 12:03:09,891 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 12:03:09,891 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 12:03:09,891 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 12:03:09,891 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 12:03:09,891 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 12:03:09,892 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 12:03:09,892 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 12:03:09,892 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 12:03:09,892 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 12:03:09,892 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 12:03:09,892 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 12:03:09,893 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 12:03:09,893 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 12:03:09,893 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-18 12:03:09,893 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-18 12:03:09,893 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 12:03:09,893 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 12:03:09,893 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 12:03:09,894 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-18 12:03:09,894 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 12:03:09,894 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 12:03:09,894 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 12:03:09,894 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 12:03:09,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 12:03:09,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 12:03:09,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 12:03:11,006 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 12:03:11,006 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 12:03:11,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 12:03:11 BoogieIcfgContainer [2020-08-18 12:03:11,017 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 12:03:11,020 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 12:03:11,020 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 12:03:11,023 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 12:03:11,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 12:03:09" (1/3) ... [2020-08-18 12:03:11,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e9ecfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 12:03:11, skipping insertion in model container [2020-08-18 12:03:11,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:03:09" (2/3) ... [2020-08-18 12:03:11,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e9ecfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 12:03:11, skipping insertion in model container [2020-08-18 12:03:11,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 12:03:11" (3/3) ... [2020-08-18 12:03:11,028 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product43.cil.c [2020-08-18 12:03:11,037 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 12:03:11,044 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 12:03:11,054 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 12:03:11,076 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 12:03:11,076 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 12:03:11,076 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 12:03:11,076 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 12:03:11,077 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 12:03:11,077 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 12:03:11,077 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 12:03:11,077 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 12:03:11,098 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states. [2020-08-18 12:03:11,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 12:03:11,109 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:03:11,110 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:03:11,111 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:03:11,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:03:11,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1951083148, now seen corresponding path program 1 times [2020-08-18 12:03:11,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:03:11,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1882804222] [2020-08-18 12:03:11,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:03:11,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:11,806 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:03:11,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:11,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:11,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:03:11,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:11,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:11,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:11,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:03:11,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:11,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:03:11,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:11,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:03:11,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:11,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 12:03:11,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:11,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:11,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:11,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 12:03:11,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:11,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 12:03:11,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:11,944 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 12:03:11,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1882804222] [2020-08-18 12:03:11,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:03:11,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 12:03:11,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951337446] [2020-08-18 12:03:11,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 12:03:11,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:03:11,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 12:03:11,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 12:03:11,976 INFO L87 Difference]: Start difference. First operand 182 states. Second operand 4 states. [2020-08-18 12:03:13,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:03:13,062 INFO L93 Difference]: Finished difference Result 308 states and 391 transitions. [2020-08-18 12:03:13,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 12:03:13,064 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-18 12:03:13,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:03:13,079 INFO L225 Difference]: With dead ends: 308 [2020-08-18 12:03:13,079 INFO L226 Difference]: Without dead ends: 170 [2020-08-18 12:03:13,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 12:03:13,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-08-18 12:03:13,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 139. [2020-08-18 12:03:13,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-08-18 12:03:13,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 161 transitions. [2020-08-18 12:03:13,183 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 161 transitions. Word has length 59 [2020-08-18 12:03:13,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:03:13,184 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 161 transitions. [2020-08-18 12:03:13,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 12:03:13,184 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 161 transitions. [2020-08-18 12:03:13,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-18 12:03:13,188 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:03:13,188 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, 1] [2020-08-18 12:03:13,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 12:03:13,189 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:03:13,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:03:13,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1220523940, now seen corresponding path program 1 times [2020-08-18 12:03:13,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:03:13,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1110890284] [2020-08-18 12:03:13,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:03:13,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:13,525 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:03:13,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:13,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:13,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:03:13,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:13,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:13,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:13,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:03:13,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:13,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:03:13,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:13,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:03:13,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:13,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 12:03:13,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:13,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:13,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:13,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 12:03:13,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:13,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 12:03:13,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:13,604 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 12:03:13,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1110890284] [2020-08-18 12:03:13,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:03:13,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 12:03:13,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318644106] [2020-08-18 12:03:13,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 12:03:13,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:03:13,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 12:03:13,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 12:03:13,608 INFO L87 Difference]: Start difference. First operand 139 states and 161 transitions. Second operand 5 states. [2020-08-18 12:03:14,064 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:14,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:03:14,921 INFO L93 Difference]: Finished difference Result 244 states and 293 transitions. [2020-08-18 12:03:14,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 12:03:14,928 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-18 12:03:14,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:03:14,936 INFO L225 Difference]: With dead ends: 244 [2020-08-18 12:03:14,936 INFO L226 Difference]: Without dead ends: 160 [2020-08-18 12:03:14,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 12:03:14,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-18 12:03:14,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 130. [2020-08-18 12:03:14,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-08-18 12:03:14,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 149 transitions. [2020-08-18 12:03:14,982 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 149 transitions. Word has length 60 [2020-08-18 12:03:14,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:03:14,982 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 149 transitions. [2020-08-18 12:03:14,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 12:03:14,983 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 149 transitions. [2020-08-18 12:03:14,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-18 12:03:14,985 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:03:14,985 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] [2020-08-18 12:03:14,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 12:03:14,986 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:03:14,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:03:14,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1125066517, now seen corresponding path program 1 times [2020-08-18 12:03:14,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:03:14,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385296135] [2020-08-18 12:03:14,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:03:15,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:15,341 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:03:15,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:15,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:15,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:03:15,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:15,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:15,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:15,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:03:15,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:15,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:03:15,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:15,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:03:15,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:15,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 12:03:15,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:15,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:15,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:15,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 12:03:15,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:15,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 12:03:15,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:15,492 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 12:03:15,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385296135] [2020-08-18 12:03:15,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:03:15,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 12:03:15,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817326532] [2020-08-18 12:03:15,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 12:03:15,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:03:15,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 12:03:15,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 12:03:15,496 INFO L87 Difference]: Start difference. First operand 130 states and 149 transitions. Second operand 9 states. [2020-08-18 12:03:15,907 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:03:16,258 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:16,477 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:16,700 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:17,627 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:19,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:03:19,209 INFO L93 Difference]: Finished difference Result 435 states and 529 transitions. [2020-08-18 12:03:19,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 12:03:19,209 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-18 12:03:19,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:03:19,215 INFO L225 Difference]: With dead ends: 435 [2020-08-18 12:03:19,215 INFO L226 Difference]: Without dead ends: 333 [2020-08-18 12:03:19,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-18 12:03:19,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-08-18 12:03:19,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 268. [2020-08-18 12:03:19,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-08-18 12:03:19,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 318 transitions. [2020-08-18 12:03:19,285 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 318 transitions. Word has length 64 [2020-08-18 12:03:19,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:03:19,285 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 318 transitions. [2020-08-18 12:03:19,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 12:03:19,286 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 318 transitions. [2020-08-18 12:03:19,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-18 12:03:19,288 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:03:19,288 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:03:19,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 12:03:19,289 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:03:19,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:03:19,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1836372268, now seen corresponding path program 1 times [2020-08-18 12:03:19,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:03:19,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848066029] [2020-08-18 12:03:19,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:03:19,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:19,609 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:03:19,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:19,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:19,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:03:19,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:19,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:19,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:19,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:03:19,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:19,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:03:19,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:19,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:03:19,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:19,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 12:03:19,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:19,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 12:03:19,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:19,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:19,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:19,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 12:03:19,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:19,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 12:03:19,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:19,740 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 12:03:19,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848066029] [2020-08-18 12:03:19,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:03:19,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 12:03:19,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94943479] [2020-08-18 12:03:19,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 12:03:19,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:03:19,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 12:03:19,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 12:03:19,743 INFO L87 Difference]: Start difference. First operand 268 states and 318 transitions. Second operand 9 states. [2020-08-18 12:03:20,121 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:03:20,736 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:21,645 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:21,869 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:22,159 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:03:22,457 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:22,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:03:22,929 INFO L93 Difference]: Finished difference Result 679 states and 862 transitions. [2020-08-18 12:03:22,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 12:03:22,931 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-18 12:03:22,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:03:22,938 INFO L225 Difference]: With dead ends: 679 [2020-08-18 12:03:22,938 INFO L226 Difference]: Without dead ends: 439 [2020-08-18 12:03:22,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 12:03:22,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-08-18 12:03:23,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 379. [2020-08-18 12:03:23,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2020-08-18 12:03:23,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 451 transitions. [2020-08-18 12:03:23,028 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 451 transitions. Word has length 70 [2020-08-18 12:03:23,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:03:23,028 INFO L479 AbstractCegarLoop]: Abstraction has 379 states and 451 transitions. [2020-08-18 12:03:23,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 12:03:23,029 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 451 transitions. [2020-08-18 12:03:23,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-08-18 12:03:23,031 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:03:23,032 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:03:23,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 12:03:23,032 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:03:23,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:03:23,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1329110427, now seen corresponding path program 1 times [2020-08-18 12:03:23,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:03:23,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858192903] [2020-08-18 12:03:23,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:03:23,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:23,290 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:03:23,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:23,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:23,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:03:23,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:23,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:23,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:23,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:03:23,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:23,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:03:23,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:23,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:03:23,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:23,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 12:03:23,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:23,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:23,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:23,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 12:03:23,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:23,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:23,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:23,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:23,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:23,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:03:23,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:23,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:23,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:23,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:23,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:23,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:03:23,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:23,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 12:03:23,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:23,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 12:03:23,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:23,414 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 12:03:23,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1858192903] [2020-08-18 12:03:23,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:03:23,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 12:03:23,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21624492] [2020-08-18 12:03:23,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 12:03:23,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:03:23,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 12:03:23,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 12:03:23,417 INFO L87 Difference]: Start difference. First operand 379 states and 451 transitions. Second operand 9 states. [2020-08-18 12:03:23,873 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:03:24,773 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:25,003 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:03:25,258 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:25,524 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:26,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:03:26,805 INFO L93 Difference]: Finished difference Result 1185 states and 1563 transitions. [2020-08-18 12:03:26,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 12:03:26,806 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 102 [2020-08-18 12:03:26,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:03:26,812 INFO L225 Difference]: With dead ends: 1185 [2020-08-18 12:03:26,813 INFO L226 Difference]: Without dead ends: 834 [2020-08-18 12:03:26,815 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-18 12:03:26,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2020-08-18 12:03:26,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 717. [2020-08-18 12:03:26,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 717 states. [2020-08-18 12:03:26,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 858 transitions. [2020-08-18 12:03:26,979 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 858 transitions. Word has length 102 [2020-08-18 12:03:26,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:03:26,980 INFO L479 AbstractCegarLoop]: Abstraction has 717 states and 858 transitions. [2020-08-18 12:03:26,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 12:03:26,980 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 858 transitions. [2020-08-18 12:03:26,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-08-18 12:03:26,983 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:03:26,983 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:03:26,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 12:03:26,984 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:03:26,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:03:26,984 INFO L82 PathProgramCache]: Analyzing trace with hash 359529404, now seen corresponding path program 1 times [2020-08-18 12:03:26,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:03:26,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [500298579] [2020-08-18 12:03:26,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:03:27,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:27,248 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:03:27,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:27,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:27,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:03:27,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:27,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:27,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:27,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:03:27,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:27,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:03:27,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:27,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:03:27,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:27,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 12:03:27,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:27,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:27,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:27,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 12:03:27,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:27,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:27,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:27,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:27,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:27,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:03:27,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:27,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:27,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:27,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:27,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:27,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:03:27,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:27,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 12:03:27,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:27,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 12:03:27,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:27,391 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 12:03:27,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [500298579] [2020-08-18 12:03:27,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:03:27,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 12:03:27,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650885312] [2020-08-18 12:03:27,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 12:03:27,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:03:27,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 12:03:27,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 12:03:27,394 INFO L87 Difference]: Start difference. First operand 717 states and 858 transitions. Second operand 9 states. [2020-08-18 12:03:28,444 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:28,712 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:03:28,955 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:29,200 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:29,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:03:29,878 INFO L93 Difference]: Finished difference Result 1536 states and 1964 transitions. [2020-08-18 12:03:29,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 12:03:29,879 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 102 [2020-08-18 12:03:29,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:03:29,887 INFO L225 Difference]: With dead ends: 1536 [2020-08-18 12:03:29,887 INFO L226 Difference]: Without dead ends: 847 [2020-08-18 12:03:29,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 12:03:29,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2020-08-18 12:03:30,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 737. [2020-08-18 12:03:30,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 737 states. [2020-08-18 12:03:30,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 878 transitions. [2020-08-18 12:03:30,036 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 878 transitions. Word has length 102 [2020-08-18 12:03:30,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:03:30,039 INFO L479 AbstractCegarLoop]: Abstraction has 737 states and 878 transitions. [2020-08-18 12:03:30,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 12:03:30,039 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 878 transitions. [2020-08-18 12:03:30,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-08-18 12:03:30,045 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:03:30,048 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:03:30,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 12:03:30,048 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:03:30,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:03:30,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1689858438, now seen corresponding path program 1 times [2020-08-18 12:03:30,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:03:30,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592066980] [2020-08-18 12:03:30,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:03:30,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:30,382 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:03:30,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:30,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:03:30,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:30,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:30,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:30,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:03:30,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:30,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:03:30,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:30,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:03:30,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:30,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 12:03:30,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:30,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:30,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:30,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 12:03:30,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:30,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:30,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:30,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:30,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:30,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:03:30,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:30,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:30,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:30,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:30,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:30,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:03:30,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:30,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 12:03:30,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:30,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 12:03:30,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:30,521 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 12:03:30,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [592066980] [2020-08-18 12:03:30,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:03:30,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 12:03:30,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932774650] [2020-08-18 12:03:30,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 12:03:30,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:03:30,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 12:03:30,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 12:03:30,524 INFO L87 Difference]: Start difference. First operand 737 states and 878 transitions. Second operand 11 states. [2020-08-18 12:03:31,022 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:31,268 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:31,504 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:32,294 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:32,650 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:32,897 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:33,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:03:33,832 INFO L93 Difference]: Finished difference Result 1360 states and 1702 transitions. [2020-08-18 12:03:33,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 12:03:33,834 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 102 [2020-08-18 12:03:33,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:03:33,839 INFO L225 Difference]: With dead ends: 1360 [2020-08-18 12:03:33,840 INFO L226 Difference]: Without dead ends: 651 [2020-08-18 12:03:33,843 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 12:03:33,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2020-08-18 12:03:33,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 578. [2020-08-18 12:03:33,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2020-08-18 12:03:33,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 674 transitions. [2020-08-18 12:03:33,946 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 674 transitions. Word has length 102 [2020-08-18 12:03:33,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:03:33,946 INFO L479 AbstractCegarLoop]: Abstraction has 578 states and 674 transitions. [2020-08-18 12:03:33,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 12:03:33,947 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 674 transitions. [2020-08-18 12:03:33,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-08-18 12:03:33,953 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:03:33,954 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] [2020-08-18 12:03:33,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 12:03:33,954 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:03:33,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:03:33,954 INFO L82 PathProgramCache]: Analyzing trace with hash -764679949, now seen corresponding path program 1 times [2020-08-18 12:03:33,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:03:33,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706137975] [2020-08-18 12:03:33,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:03:34,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:34,371 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:03:34,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:34,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:34,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:03:34,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:34,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:34,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:34,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:03:34,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:34,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:03:34,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:34,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:03:34,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:34,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 12:03:34,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:34,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 12:03:34,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:34,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:34,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:34,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 12:03:34,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:34,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:34,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:34,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:34,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:34,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:03:34,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:34,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:34,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:34,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:34,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:34,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:03:34,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:34,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 12:03:34,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:34,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-18 12:03:34,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:34,546 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 12:03:34,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706137975] [2020-08-18 12:03:34,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:03:34,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 12:03:34,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068319193] [2020-08-18 12:03:34,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 12:03:34,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:03:34,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 12:03:34,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-18 12:03:34,548 INFO L87 Difference]: Start difference. First operand 578 states and 674 transitions. Second operand 12 states. [2020-08-18 12:03:35,056 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:03:35,852 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:03:36,465 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:36,803 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:37,042 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:03:37,320 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:37,579 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:38,919 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:03:39,176 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:39,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:03:39,731 INFO L93 Difference]: Finished difference Result 1691 states and 2129 transitions. [2020-08-18 12:03:39,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-18 12:03:39,731 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 106 [2020-08-18 12:03:39,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:03:39,739 INFO L225 Difference]: With dead ends: 1691 [2020-08-18 12:03:39,740 INFO L226 Difference]: Without dead ends: 1313 [2020-08-18 12:03:39,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-18 12:03:39,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2020-08-18 12:03:39,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1197. [2020-08-18 12:03:39,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1197 states. [2020-08-18 12:03:39,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1399 transitions. [2020-08-18 12:03:39,940 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1399 transitions. Word has length 106 [2020-08-18 12:03:39,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:03:39,944 INFO L479 AbstractCegarLoop]: Abstraction has 1197 states and 1399 transitions. [2020-08-18 12:03:39,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 12:03:39,944 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1399 transitions. [2020-08-18 12:03:39,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-18 12:03:39,949 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:03:39,950 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:03:39,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 12:03:39,950 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:03:39,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:03:39,951 INFO L82 PathProgramCache]: Analyzing trace with hash -60868023, now seen corresponding path program 1 times [2020-08-18 12:03:39,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:03:39,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [698914125] [2020-08-18 12:03:39,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:03:40,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:40,281 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:03:40,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:40,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:40,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:03:40,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:40,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:40,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:40,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:03:40,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:40,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:03:40,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:40,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:03:40,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:40,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 12:03:40,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:40,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 12:03:40,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:40,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:40,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:40,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:40,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:40,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:03:40,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:40,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:40,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:40,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:40,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:40,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:03:40,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:40,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:40,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:40,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:40,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:40,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:03:40,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:40,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 12:03:40,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:40,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:40,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:40,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-18 12:03:40,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:40,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:40,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:40,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 12:03:40,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:40,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-18 12:03:40,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:40,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:40,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:40,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-18 12:03:40,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:40,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-18 12:03:40,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:40,526 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-08-18 12:03:40,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [698914125] [2020-08-18 12:03:40,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 12:03:40,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 12:03:40,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103090252] [2020-08-18 12:03:40,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 12:03:40,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:03:40,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 12:03:40,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-18 12:03:40,529 INFO L87 Difference]: Start difference. First operand 1197 states and 1399 transitions. Second operand 16 states. [2020-08-18 12:03:41,071 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:03:41,403 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 12:03:41,654 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 12:03:41,901 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 12:03:42,472 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:03:42,765 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:03:43,133 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 12:03:43,396 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 12:03:44,454 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:03:44,917 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:45,210 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:45,567 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:03:46,057 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 12:03:46,582 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 12:03:46,836 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:47,101 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:03:47,367 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:03:47,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:03:47,862 INFO L93 Difference]: Finished difference Result 2225 states and 2688 transitions. [2020-08-18 12:03:47,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-08-18 12:03:47,862 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 149 [2020-08-18 12:03:47,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:03:47,869 INFO L225 Difference]: With dead ends: 2225 [2020-08-18 12:03:47,869 INFO L226 Difference]: Without dead ends: 1222 [2020-08-18 12:03:47,873 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=548, Invalid=2002, Unknown=0, NotChecked=0, Total=2550 [2020-08-18 12:03:47,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2020-08-18 12:03:48,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1102. [2020-08-18 12:03:48,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1102 states. [2020-08-18 12:03:48,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1268 transitions. [2020-08-18 12:03:48,038 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1268 transitions. Word has length 149 [2020-08-18 12:03:48,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:03:48,039 INFO L479 AbstractCegarLoop]: Abstraction has 1102 states and 1268 transitions. [2020-08-18 12:03:48,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 12:03:48,039 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1268 transitions. [2020-08-18 12:03:48,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-08-18 12:03:48,046 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:03:48,046 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-08-18 12:03:48,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 12:03:48,047 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:03:48,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:03:48,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1576976523, now seen corresponding path program 1 times [2020-08-18 12:03:48,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:03:48,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [248317064] [2020-08-18 12:03:48,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:03:48,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:48,394 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:03:48,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:48,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:48,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:03:48,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:48,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:48,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:48,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:03:48,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:48,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:03:48,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:48,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:03:48,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:48,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 12:03:48,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:48,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 12:03:48,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:48,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:48,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:48,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:48,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:48,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:03:48,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:48,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:48,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:48,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:48,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:48,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:03:48,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:48,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:48,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:48,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:48,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:48,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:03:48,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:48,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 12:03:48,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:48,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:48,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:48,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 12:03:48,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:48,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:48,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:48,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:48,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:48,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:48,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:48,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 12:03:48,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:48,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:48,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:48,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:03:48,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:48,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:48,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:48,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-08-18 12:03:48,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:48,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:48,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:48,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:48,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:48,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:48,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:48,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 12:03:48,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:48,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:48,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:48,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:03:48,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:48,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:48,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:48,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-18 12:03:48,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:48,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:48,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:48,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-18 12:03:48,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:48,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:48,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:48,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:48,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:48,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:03:48,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:48,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:48,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:48,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-18 12:03:48,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:48,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:48,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:48,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-08-18 12:03:48,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:48,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:48,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:48,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:48,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:48,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:03:48,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:48,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:48,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:48,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:48,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:48,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:03:48,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:48,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-08-18 12:03:48,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:48,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-08-18 12:03:48,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:48,910 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 104 proven. 48 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2020-08-18 12:03:48,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [248317064] [2020-08-18 12:03:48,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 12:03:48,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 12:03:48,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953324556] [2020-08-18 12:03:48,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 12:03:48,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:03:48,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 12:03:48,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2020-08-18 12:03:48,913 INFO L87 Difference]: Start difference. First operand 1102 states and 1268 transitions. Second operand 16 states. [2020-08-18 12:03:50,426 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:50,716 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:03:50,980 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:03:51,231 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:03:52,438 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:03:54,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:03:54,255 INFO L93 Difference]: Finished difference Result 3031 states and 3632 transitions. [2020-08-18 12:03:54,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-18 12:03:54,256 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 302 [2020-08-18 12:03:54,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:03:54,266 INFO L225 Difference]: With dead ends: 3031 [2020-08-18 12:03:54,266 INFO L226 Difference]: Without dead ends: 1752 [2020-08-18 12:03:54,270 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 111 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=333, Invalid=1073, Unknown=0, NotChecked=0, Total=1406 [2020-08-18 12:03:54,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1752 states. [2020-08-18 12:03:54,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1752 to 1430. [2020-08-18 12:03:54,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1430 states. [2020-08-18 12:03:54,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 1674 transitions. [2020-08-18 12:03:54,583 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 1674 transitions. Word has length 302 [2020-08-18 12:03:54,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:03:54,584 INFO L479 AbstractCegarLoop]: Abstraction has 1430 states and 1674 transitions. [2020-08-18 12:03:54,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 12:03:54,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 1674 transitions. [2020-08-18 12:03:54,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-08-18 12:03:54,598 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:03:54,599 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:03:54,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 12:03:54,599 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:03:54,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:03:54,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1865964208, now seen corresponding path program 1 times [2020-08-18 12:03:54,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:03:54,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1410032401] [2020-08-18 12:03:54,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:03:54,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:54,972 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:03:54,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:54,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:55,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:03:55,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:55,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:55,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:55,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:03:55,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:55,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:03:55,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:55,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:03:55,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:55,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 12:03:55,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:55,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 12:03:55,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:55,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:55,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:55,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:55,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:55,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:03:55,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:55,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:55,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:55,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:55,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:55,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:03:55,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:55,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:55,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:55,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:55,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:55,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:03:55,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:55,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 12:03:55,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:55,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:55,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:55,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 12:03:55,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:55,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:55,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:55,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:55,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:55,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:55,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:55,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 12:03:55,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:55,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:55,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:55,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:03:55,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:55,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:55,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:55,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 12:03:55,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:55,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-08-18 12:03:55,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:55,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:55,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:55,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:55,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:55,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:55,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:55,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 12:03:55,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:55,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:55,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:55,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:03:55,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:55,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:55,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:55,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-08-18 12:03:55,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:55,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:55,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:55,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-08-18 12:03:55,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:55,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:55,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:55,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:55,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:55,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:03:55,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:55,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:55,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:55,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-08-18 12:03:55,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:55,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:55,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:55,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-18 12:03:55,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:55,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:55,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:55,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:55,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:55,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:03:55,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:55,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:55,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:55,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:55,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:55,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:03:55,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:55,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-08-18 12:03:55,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:55,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-08-18 12:03:55,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:55,483 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 111 proven. 44 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2020-08-18 12:03:55,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1410032401] [2020-08-18 12:03:55,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 12:03:55,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-18 12:03:55,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315744695] [2020-08-18 12:03:55,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-18 12:03:55,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:03:55,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-18 12:03:55,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-08-18 12:03:55,485 INFO L87 Difference]: Start difference. First operand 1430 states and 1674 transitions. Second operand 17 states. [2020-08-18 12:03:56,456 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:03:56,921 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:03:57,199 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:03:57,433 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:03:58,116 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:59,088 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:59,350 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:59,838 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:04:00,509 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:04:01,127 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:04:01,392 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:04:02,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:04:02,216 INFO L93 Difference]: Finished difference Result 2555 states and 3056 transitions. [2020-08-18 12:04:02,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-08-18 12:04:02,217 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 308 [2020-08-18 12:04:02,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:04:02,226 INFO L225 Difference]: With dead ends: 2555 [2020-08-18 12:04:02,226 INFO L226 Difference]: Without dead ends: 1457 [2020-08-18 12:04:02,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=370, Invalid=1436, Unknown=0, NotChecked=0, Total=1806 [2020-08-18 12:04:02,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2020-08-18 12:04:02,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 1403. [2020-08-18 12:04:02,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1403 states. [2020-08-18 12:04:02,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1403 states to 1403 states and 1626 transitions. [2020-08-18 12:04:02,466 INFO L78 Accepts]: Start accepts. Automaton has 1403 states and 1626 transitions. Word has length 308 [2020-08-18 12:04:02,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:04:02,467 INFO L479 AbstractCegarLoop]: Abstraction has 1403 states and 1626 transitions. [2020-08-18 12:04:02,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-18 12:04:02,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1403 states and 1626 transitions. [2020-08-18 12:04:02,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-08-18 12:04:02,475 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:04:02,475 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:04:02,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 12:04:02,476 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:04:02,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:04:02,476 INFO L82 PathProgramCache]: Analyzing trace with hash 2055130084, now seen corresponding path program 1 times [2020-08-18 12:04:02,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:04:02,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [878610723] [2020-08-18 12:04:02,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:04:02,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,780 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:04:02,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:02,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:04:02,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:04:02,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:04:02,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:04:02,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:04:02,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 12:04:02,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 12:04:02,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:02,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:02,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:04:02,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:02,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:02,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:04:02,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:02,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:02,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:04:02,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 12:04:02,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:02,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 12:04:02,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:02,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:02,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:04:02,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 12:04:02,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:02,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:04:02,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:02,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 12:04:02,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-08-18 12:04:02,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:02,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:02,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:04:02,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 12:04:02,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:02,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:04:02,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:02,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-08-18 12:04:02,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:02,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-08-18 12:04:02,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:02,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:02,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:04:02,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:02,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-08-18 12:04:02,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:02,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-08-18 12:04:02,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:02,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:02,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:04:02,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:02,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:02,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:04:02,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-08-18 12:04:02,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-08-18 12:04:02,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:03,058 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 82 proven. 4 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2020-08-18 12:04:03,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [878610723] [2020-08-18 12:04:03,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 12:04:03,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-18 12:04:03,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156201809] [2020-08-18 12:04:03,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 12:04:03,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:04:03,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 12:04:03,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-18 12:04:03,062 INFO L87 Difference]: Start difference. First operand 1403 states and 1626 transitions. Second operand 9 states. [2020-08-18 12:04:04,011 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189