/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product56.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 02:35:10,504 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 02:35:10,507 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 02:35:10,531 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 02:35:10,531 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 02:35:10,532 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 02:35:10,533 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 02:35:10,535 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 02:35:10,537 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 02:35:10,538 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 02:35:10,539 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 02:35:10,540 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 02:35:10,540 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 02:35:10,541 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 02:35:10,542 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 02:35:10,543 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 02:35:10,544 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 02:35:10,545 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 02:35:10,547 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 02:35:10,549 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 02:35:10,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 02:35:10,551 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 02:35:10,552 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 02:35:10,553 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 02:35:10,556 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 02:35:10,556 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 02:35:10,556 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 02:35:10,557 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 02:35:10,558 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 02:35:10,559 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 02:35:10,559 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 02:35:10,560 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 02:35:10,561 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 02:35:10,561 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 02:35:10,562 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 02:35:10,563 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 02:35:10,563 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 02:35:10,563 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 02:35:10,564 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 02:35:10,565 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 02:35:10,565 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 02:35:10,566 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 [2020-08-19 02:35:10,612 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 02:35:10,612 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 02:35:10,614 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 02:35:10,614 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 02:35:10,614 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 02:35:10,614 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 02:35:10,615 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 02:35:10,615 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 02:35:10,616 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 02:35:10,616 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 02:35:10,616 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 02:35:10,616 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 02:35:10,616 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 02:35:10,616 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 02:35:10,617 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 02:35:10,618 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 02:35:10,618 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 02:35:10,619 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 02:35:10,619 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 02:35:10,619 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 02:35:10,619 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 02:35:10,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:35:10,620 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 02:35:10,620 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 02:35:10,620 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 02:35:10,620 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 02:35:10,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 02:35:10,621 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 02:35:10,622 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 02:35:10,623 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=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; [2020-08-19 02:35:10,910 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 02:35:10,930 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 02:35:10,935 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 02:35:10,938 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 02:35:10,938 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 02:35:10,939 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product56.cil.c [2020-08-19 02:35:11,007 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e8f627b6/eacfe2205bbc4c789214ecf8df609ed5/FLAG39a11375b [2020-08-19 02:35:11,496 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 02:35:11,497 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product56.cil.c [2020-08-19 02:35:11,510 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e8f627b6/eacfe2205bbc4c789214ecf8df609ed5/FLAG39a11375b [2020-08-19 02:35:11,843 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e8f627b6/eacfe2205bbc4c789214ecf8df609ed5 [2020-08-19 02:35:11,852 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 02:35:11,853 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 02:35:11,854 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 02:35:11,855 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 02:35:11,858 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 02:35:11,859 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:35:11" (1/1) ... [2020-08-19 02:35:11,862 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70bc1dbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:35:11, skipping insertion in model container [2020-08-19 02:35:11,862 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:35:11" (1/1) ... [2020-08-19 02:35:11,870 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 02:35:11,921 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 02:35:12,348 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:35:12,360 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 02:35:12,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:35:12,503 INFO L208 MainTranslator]: Completed translation [2020-08-19 02:35:12,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:35:12 WrapperNode [2020-08-19 02:35:12,504 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 02:35:12,504 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 02:35:12,504 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 02:35:12,505 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 02:35:12,517 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:35:12" (1/1) ... [2020-08-19 02:35:12,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:35:12" (1/1) ... [2020-08-19 02:35:12,535 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:35:12" (1/1) ... [2020-08-19 02:35:12,536 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:35:12" (1/1) ... [2020-08-19 02:35:12,569 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:35:12" (1/1) ... [2020-08-19 02:35:12,587 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:35:12" (1/1) ... [2020-08-19 02:35:12,591 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:35:12" (1/1) ... [2020-08-19 02:35:12,599 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 02:35:12,600 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 02:35:12,600 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 02:35:12,600 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 02:35:12,601 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:35:12" (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 [2020-08-19 02:35:12,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 02:35:12,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 02:35:12,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 02:35:12,671 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 02:35:12,671 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 02:35:12,671 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 02:35:12,672 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 02:35:12,672 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 02:35:12,672 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 02:35:12,672 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 02:35:12,672 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 02:35:12,672 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 02:35:12,673 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 02:35:12,673 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 02:35:12,673 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 02:35:12,673 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 02:35:12,673 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 02:35:12,674 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 02:35:12,674 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-19 02:35:12,674 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-19 02:35:12,674 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 02:35:12,674 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 02:35:12,674 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 02:35:12,674 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-19 02:35:12,675 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 02:35:12,675 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 02:35:12,675 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 02:35:12,675 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 02:35:12,675 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 02:35:12,675 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 02:35:12,676 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 02:35:12,676 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 02:35:12,676 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 02:35:12,676 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 02:35:12,676 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 02:35:12,676 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 02:35:12,677 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 02:35:12,677 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 02:35:12,677 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 02:35:12,677 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 02:35:12,677 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 02:35:12,677 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 02:35:12,677 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 02:35:12,678 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 02:35:12,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 02:35:12,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 02:35:12,678 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 02:35:12,678 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 02:35:12,678 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 02:35:12,679 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 02:35:12,679 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 02:35:12,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 02:35:12,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 02:35:12,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 02:35:12,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 02:35:12,679 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 02:35:12,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 02:35:12,680 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 02:35:12,680 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 02:35:12,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 02:35:12,680 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 02:35:12,681 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 02:35:12,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 02:35:12,681 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 02:35:12,681 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 02:35:12,681 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 02:35:12,681 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 02:35:12,681 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 02:35:12,682 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 02:35:12,682 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 02:35:12,682 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 02:35:12,682 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 02:35:12,682 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 02:35:12,682 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 02:35:12,682 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-19 02:35:12,683 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-19 02:35:12,683 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 02:35:12,683 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 02:35:12,683 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 02:35:12,683 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 02:35:12,683 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 02:35:12,684 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 02:35:12,684 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 02:35:12,684 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 02:35:12,684 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 02:35:12,684 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 02:35:12,684 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 02:35:12,684 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-19 02:35:12,685 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 02:35:12,685 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 02:35:12,685 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 02:35:12,685 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 02:35:12,685 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 02:35:12,686 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 02:35:12,686 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 02:35:12,686 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 02:35:12,686 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 02:35:12,686 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 02:35:12,687 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 02:35:12,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 02:35:12,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 02:35:12,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 02:35:14,051 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 02:35:14,052 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 02:35:14,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:35:14 BoogieIcfgContainer [2020-08-19 02:35:14,058 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 02:35:14,059 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 02:35:14,059 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 02:35:14,063 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 02:35:14,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 02:35:11" (1/3) ... [2020-08-19 02:35:14,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@454a94b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:35:14, skipping insertion in model container [2020-08-19 02:35:14,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:35:12" (2/3) ... [2020-08-19 02:35:14,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@454a94b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:35:14, skipping insertion in model container [2020-08-19 02:35:14,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:35:14" (3/3) ... [2020-08-19 02:35:14,067 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product56.cil.c [2020-08-19 02:35:14,078 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 02:35:14,087 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 02:35:14,102 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 02:35:14,129 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 02:35:14,129 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 02:35:14,130 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 02:35:14,130 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 02:35:14,130 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 02:35:14,130 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 02:35:14,130 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 02:35:14,131 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 02:35:14,155 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states. [2020-08-19 02:35:14,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 02:35:14,167 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:35:14,168 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:35:14,169 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:35:14,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:35:14,176 INFO L82 PathProgramCache]: Analyzing trace with hash -453171886, now seen corresponding path program 1 times [2020-08-19 02:35:14,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:35:14,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502474204] [2020-08-19 02:35:14,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:35:14,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:14,838 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:35:14,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:35:14,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:14,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:35:14,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:14,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:35:14,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:14,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:35:14,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:14,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:35:14,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:14,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:35:14,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:14,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 02:35:14,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:14,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 02:35:14,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:14,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:35:14,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1502474204] [2020-08-19 02:35:14,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:35:14,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 02:35:14,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501389150] [2020-08-19 02:35:14,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 02:35:14,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:35:15,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 02:35:15,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 02:35:15,011 INFO L87 Difference]: Start difference. First operand 201 states. Second operand 4 states. [2020-08-19 02:35:16,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:35:16,365 INFO L93 Difference]: Finished difference Result 353 states and 461 transitions. [2020-08-19 02:35:16,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 02:35:16,367 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-19 02:35:16,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:35:16,383 INFO L225 Difference]: With dead ends: 353 [2020-08-19 02:35:16,383 INFO L226 Difference]: Without dead ends: 196 [2020-08-19 02:35:16,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 02:35:16,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-08-19 02:35:16,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 158. [2020-08-19 02:35:16,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-08-19 02:35:16,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 188 transitions. [2020-08-19 02:35:16,483 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 188 transitions. Word has length 51 [2020-08-19 02:35:16,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:35:16,484 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 188 transitions. [2020-08-19 02:35:16,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 02:35:16,484 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 188 transitions. [2020-08-19 02:35:16,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 02:35:16,488 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:35:16,488 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:35:16,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 02:35:16,489 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:35:16,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:35:16,489 INFO L82 PathProgramCache]: Analyzing trace with hash 23130160, now seen corresponding path program 1 times [2020-08-19 02:35:16,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:35:16,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [994932125] [2020-08-19 02:35:16,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:35:16,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:16,876 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:35:16,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:35:16,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:16,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:35:16,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:16,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:35:16,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:16,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:35:16,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:16,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:35:16,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:16,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:35:16,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:16,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 02:35:16,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:16,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 02:35:16,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:16,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:35:16,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [994932125] [2020-08-19 02:35:16,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:35:16,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 02:35:16,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842694254] [2020-08-19 02:35:16,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 02:35:16,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:35:16,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 02:35:16,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 02:35:16,941 INFO L87 Difference]: Start difference. First operand 158 states and 188 transitions. Second operand 5 states. [2020-08-19 02:35:17,379 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:35:18,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:35:18,455 INFO L93 Difference]: Finished difference Result 288 states and 360 transitions. [2020-08-19 02:35:18,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 02:35:18,456 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-19 02:35:18,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:35:18,460 INFO L225 Difference]: With dead ends: 288 [2020-08-19 02:35:18,460 INFO L226 Difference]: Without dead ends: 186 [2020-08-19 02:35:18,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-19 02:35:18,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-08-19 02:35:18,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 149. [2020-08-19 02:35:18,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-08-19 02:35:18,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 176 transitions. [2020-08-19 02:35:18,509 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 176 transitions. Word has length 52 [2020-08-19 02:35:18,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:35:18,510 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 176 transitions. [2020-08-19 02:35:18,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 02:35:18,510 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 176 transitions. [2020-08-19 02:35:18,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 02:35:18,513 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:35:18,513 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:35:18,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 02:35:18,513 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:35:18,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:35:18,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1418292754, now seen corresponding path program 1 times [2020-08-19 02:35:18,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:35:18,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1524838329] [2020-08-19 02:35:18,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:35:18,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:18,922 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:35:18,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:35:18,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:18,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:35:19,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:19,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:35:19,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:19,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:35:19,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:19,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:35:19,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:19,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:35:19,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:19,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 02:35:19,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:19,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 02:35:19,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:19,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:35:19,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1524838329] [2020-08-19 02:35:19,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:35:19,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 02:35:19,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643390875] [2020-08-19 02:35:19,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 02:35:19,064 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:35:19,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 02:35:19,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 02:35:19,067 INFO L87 Difference]: Start difference. First operand 149 states and 176 transitions. Second operand 9 states. [2020-08-19 02:35:19,401 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:35:19,690 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:35:19,961 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:35:20,202 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:35:21,011 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:35:23,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:35:23,408 INFO L93 Difference]: Finished difference Result 503 states and 637 transitions. [2020-08-19 02:35:23,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 02:35:23,409 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-19 02:35:23,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:35:23,415 INFO L225 Difference]: With dead ends: 503 [2020-08-19 02:35:23,415 INFO L226 Difference]: Without dead ends: 382 [2020-08-19 02:35:23,417 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-19 02:35:23,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2020-08-19 02:35:23,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 309. [2020-08-19 02:35:23,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2020-08-19 02:35:23,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 378 transitions. [2020-08-19 02:35:23,526 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 378 transitions. Word has length 57 [2020-08-19 02:35:23,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:35:23,526 INFO L479 AbstractCegarLoop]: Abstraction has 309 states and 378 transitions. [2020-08-19 02:35:23,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 02:35:23,527 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 378 transitions. [2020-08-19 02:35:23,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-19 02:35:23,530 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:35:23,530 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:35:23,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 02:35:23,530 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:35:23,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:35:23,531 INFO L82 PathProgramCache]: Analyzing trace with hash -335998659, now seen corresponding path program 1 times [2020-08-19 02:35:23,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:35:23,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1190282452] [2020-08-19 02:35:23,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:35:23,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:23,829 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:35:23,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:35:23,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:23,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:35:23,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:23,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:35:23,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:23,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:35:23,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:23,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:35:23,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:23,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:35:23,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:23,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 02:35:23,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:23,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 02:35:23,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:23,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 02:35:23,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:23,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:35:23,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1190282452] [2020-08-19 02:35:23,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:35:23,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 02:35:23,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936180807] [2020-08-19 02:35:23,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 02:35:23,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:35:23,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 02:35:23,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 02:35:23,920 INFO L87 Difference]: Start difference. First operand 309 states and 378 transitions. Second operand 9 states. [2020-08-19 02:35:24,275 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:35:25,289 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:35:25,726 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:35:25,969 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:35:26,242 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:35:28,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:35:28,116 INFO L93 Difference]: Finished difference Result 992 states and 1314 transitions. [2020-08-19 02:35:28,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-19 02:35:28,117 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-08-19 02:35:28,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:35:28,123 INFO L225 Difference]: With dead ends: 992 [2020-08-19 02:35:28,124 INFO L226 Difference]: Without dead ends: 711 [2020-08-19 02:35:28,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-19 02:35:28,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2020-08-19 02:35:28,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 566. [2020-08-19 02:35:28,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 566 states. [2020-08-19 02:35:28,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 696 transitions. [2020-08-19 02:35:28,268 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 696 transitions. Word has length 62 [2020-08-19 02:35:28,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:35:28,269 INFO L479 AbstractCegarLoop]: Abstraction has 566 states and 696 transitions. [2020-08-19 02:35:28,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 02:35:28,269 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 696 transitions. [2020-08-19 02:35:28,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-19 02:35:28,273 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:35:28,273 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:35:28,273 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 02:35:28,273 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:35:28,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:35:28,274 INFO L82 PathProgramCache]: Analyzing trace with hash 563759321, now seen corresponding path program 1 times [2020-08-19 02:35:28,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:35:28,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1878707693] [2020-08-19 02:35:28,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:35:28,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:28,556 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:35:28,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:35:28,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:28,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:35:28,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:28,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:35:28,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:28,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:35:28,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:28,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:35:28,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:28,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:35:28,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:28,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 02:35:28,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:28,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 02:35:28,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:28,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 02:35:28,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:28,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-19 02:35:28,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:28,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:35:28,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1878707693] [2020-08-19 02:35:28,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:35:28,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 02:35:28,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557314161] [2020-08-19 02:35:28,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 02:35:28,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:35:28,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 02:35:28,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 02:35:28,660 INFO L87 Difference]: Start difference. First operand 566 states and 696 transitions. Second operand 10 states. [2020-08-19 02:35:29,065 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:35:30,099 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:35:30,376 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:35:30,645 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:35:31,330 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:35:32,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:35:32,847 INFO L93 Difference]: Finished difference Result 1565 states and 2138 transitions. [2020-08-19 02:35:32,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-19 02:35:32,848 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-08-19 02:35:32,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:35:32,856 INFO L225 Difference]: With dead ends: 1565 [2020-08-19 02:35:32,856 INFO L226 Difference]: Without dead ends: 1027 [2020-08-19 02:35:32,859 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2020-08-19 02:35:32,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2020-08-19 02:35:33,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 821. [2020-08-19 02:35:33,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2020-08-19 02:35:33,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 999 transitions. [2020-08-19 02:35:33,023 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 999 transitions. Word has length 66 [2020-08-19 02:35:33,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:35:33,023 INFO L479 AbstractCegarLoop]: Abstraction has 821 states and 999 transitions. [2020-08-19 02:35:33,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 02:35:33,023 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 999 transitions. [2020-08-19 02:35:33,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-19 02:35:33,026 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:35:33,026 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:35:33,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 02:35:33,027 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:35:33,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:35:33,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1340944239, now seen corresponding path program 1 times [2020-08-19 02:35:33,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:35:33,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1068525361] [2020-08-19 02:35:33,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:35:33,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:33,256 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:35:33,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:35:33,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:33,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:35:33,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:33,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:35:33,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:33,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:35:33,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:33,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:35:33,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:33,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:35:33,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:33,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 02:35:33,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:33,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 02:35:33,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:33,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:33,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:33,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:33,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:33,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:33,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:33,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:35:33,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:33,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:35:33,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:33,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 02:35:33,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:33,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-19 02:35:33,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:33,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:35:33,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1068525361] [2020-08-19 02:35:33,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:35:33,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 02:35:33,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288116909] [2020-08-19 02:35:33,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 02:35:33,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:35:33,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 02:35:33,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 02:35:33,409 INFO L87 Difference]: Start difference. First operand 821 states and 999 transitions. Second operand 10 states. [2020-08-19 02:35:34,495 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:35:34,737 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 02:35:34,993 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:35:35,285 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:35:36,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:35:36,684 INFO L93 Difference]: Finished difference Result 1894 states and 2518 transitions. [2020-08-19 02:35:36,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 02:35:36,686 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2020-08-19 02:35:36,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:35:36,698 INFO L225 Difference]: With dead ends: 1894 [2020-08-19 02:35:36,698 INFO L226 Difference]: Without dead ends: 1101 [2020-08-19 02:35:36,703 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-19 02:35:36,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2020-08-19 02:35:36,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 847. [2020-08-19 02:35:36,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 847 states. [2020-08-19 02:35:36,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1027 transitions. [2020-08-19 02:35:36,964 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1027 transitions. Word has length 94 [2020-08-19 02:35:36,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:35:36,965 INFO L479 AbstractCegarLoop]: Abstraction has 847 states and 1027 transitions. [2020-08-19 02:35:36,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 02:35:36,965 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1027 transitions. [2020-08-19 02:35:36,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-19 02:35:36,969 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:35:36,969 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:35:36,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 02:35:36,971 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:35:36,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:35:36,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1413330797, now seen corresponding path program 1 times [2020-08-19 02:35:36,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:35:36,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1242971458] [2020-08-19 02:35:36,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:35:37,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:37,331 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:35:37,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:35:37,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:37,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:35:37,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:37,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:35:37,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:37,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:35:37,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:37,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:35:37,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:37,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:35:37,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:37,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 02:35:37,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:37,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 02:35:37,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:37,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:37,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:37,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:37,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:37,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:37,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:37,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:35:37,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:37,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:35:37,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:37,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 02:35:37,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:37,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-19 02:35:37,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:37,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:35:37,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1242971458] [2020-08-19 02:35:37,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:35:37,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 02:35:37,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387591584] [2020-08-19 02:35:37,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 02:35:37,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:35:37,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 02:35:37,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-19 02:35:37,522 INFO L87 Difference]: Start difference. First operand 847 states and 1027 transitions. Second operand 12 states. [2020-08-19 02:35:38,063 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:35:38,330 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:35:38,568 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:35:39,434 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:35:39,726 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:35:39,970 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:35:41,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:35:41,611 INFO L93 Difference]: Finished difference Result 1948 states and 2635 transitions. [2020-08-19 02:35:41,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 02:35:41,612 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 94 [2020-08-19 02:35:41,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:35:41,628 INFO L225 Difference]: With dead ends: 1948 [2020-08-19 02:35:41,628 INFO L226 Difference]: Without dead ends: 1129 [2020-08-19 02:35:41,634 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-19 02:35:41,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2020-08-19 02:35:41,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 863. [2020-08-19 02:35:41,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 863 states. [2020-08-19 02:35:41,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1043 transitions. [2020-08-19 02:35:41,852 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1043 transitions. Word has length 94 [2020-08-19 02:35:41,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:35:41,853 INFO L479 AbstractCegarLoop]: Abstraction has 863 states and 1043 transitions. [2020-08-19 02:35:41,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 02:35:41,853 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1043 transitions. [2020-08-19 02:35:41,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-19 02:35:41,857 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:35:41,858 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:35:41,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 02:35:41,858 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:35:41,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:35:41,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1083565036, now seen corresponding path program 1 times [2020-08-19 02:35:41,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:35:41,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [637757748] [2020-08-19 02:35:41,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:35:41,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:42,138 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:35:42,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:35:42,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:42,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:35:42,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:42,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:35:42,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:42,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:35:42,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:42,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:35:42,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:42,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:35:42,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:42,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 02:35:42,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:42,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 02:35:42,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:42,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:42,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:42,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:42,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:42,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:42,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:42,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:35:42,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:42,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:35:42,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:42,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 02:35:42,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:42,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-19 02:35:42,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:42,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:35:42,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [637757748] [2020-08-19 02:35:42,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:35:42,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 02:35:42,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617260532] [2020-08-19 02:35:42,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 02:35:42,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:35:42,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 02:35:42,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-19 02:35:42,311 INFO L87 Difference]: Start difference. First operand 863 states and 1043 transitions. Second operand 8 states. [2020-08-19 02:35:42,619 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:35:43,160 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:35:46,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:35:46,312 INFO L93 Difference]: Finished difference Result 2919 states and 3977 transitions. [2020-08-19 02:35:46,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 02:35:46,313 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2020-08-19 02:35:46,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:35:46,328 INFO L225 Difference]: With dead ends: 2919 [2020-08-19 02:35:46,328 INFO L226 Difference]: Without dead ends: 2084 [2020-08-19 02:35:46,332 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-08-19 02:35:46,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2084 states. [2020-08-19 02:35:46,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2084 to 1727. [2020-08-19 02:35:46,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1727 states. [2020-08-19 02:35:46,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1727 states to 1727 states and 2109 transitions. [2020-08-19 02:35:46,754 INFO L78 Accepts]: Start accepts. Automaton has 1727 states and 2109 transitions. Word has length 94 [2020-08-19 02:35:46,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:35:46,754 INFO L479 AbstractCegarLoop]: Abstraction has 1727 states and 2109 transitions. [2020-08-19 02:35:46,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 02:35:46,755 INFO L276 IsEmpty]: Start isEmpty. Operand 1727 states and 2109 transitions. [2020-08-19 02:35:46,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-19 02:35:46,759 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:35:46,759 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:35:46,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 02:35:46,760 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:35:46,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:35:46,760 INFO L82 PathProgramCache]: Analyzing trace with hash -452793586, now seen corresponding path program 1 times [2020-08-19 02:35:46,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:35:46,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226803247] [2020-08-19 02:35:46,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:35:46,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:47,059 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:35:47,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:35:47,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:47,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:35:47,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:47,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:35:47,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:47,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:35:47,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:47,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:35:47,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:47,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:35:47,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:47,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:35:47,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:47,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 02:35:47,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:47,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 02:35:47,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:47,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:47,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:47,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:47,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:47,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:47,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:47,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:35:47,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:47,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:35:47,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:47,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-19 02:35:47,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:47,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 02:35:47,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:47,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:35:47,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226803247] [2020-08-19 02:35:47,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:35:47,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 02:35:47,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114635328] [2020-08-19 02:35:47,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 02:35:47,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:35:47,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 02:35:47,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-19 02:35:47,183 INFO L87 Difference]: Start difference. First operand 1727 states and 2109 transitions. Second operand 8 states. [2020-08-19 02:35:47,579 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:35:50,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:35:50,877 INFO L93 Difference]: Finished difference Result 3491 states and 4776 transitions. [2020-08-19 02:35:50,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-19 02:35:50,878 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 98 [2020-08-19 02:35:50,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:35:50,902 INFO L225 Difference]: With dead ends: 3491 [2020-08-19 02:35:50,902 INFO L226 Difference]: Without dead ends: 3488 [2020-08-19 02:35:50,905 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-19 02:35:50,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3488 states. [2020-08-19 02:35:51,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3488 to 2882. [2020-08-19 02:35:51,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2882 states. [2020-08-19 02:35:51,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2882 states to 2882 states and 3603 transitions. [2020-08-19 02:35:51,500 INFO L78 Accepts]: Start accepts. Automaton has 2882 states and 3603 transitions. Word has length 98 [2020-08-19 02:35:51,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:35:51,501 INFO L479 AbstractCegarLoop]: Abstraction has 2882 states and 3603 transitions. [2020-08-19 02:35:51,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 02:35:51,502 INFO L276 IsEmpty]: Start isEmpty. Operand 2882 states and 3603 transitions. [2020-08-19 02:35:51,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-08-19 02:35:51,513 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:35:51,513 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:35:51,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 02:35:51,514 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:35:51,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:35:51,514 INFO L82 PathProgramCache]: Analyzing trace with hash 2137087651, now seen corresponding path program 1 times [2020-08-19 02:35:51,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:35:51,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1965280283] [2020-08-19 02:35:51,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:35:51,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:51,797 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:35:51,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:35:51,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:51,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:35:51,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:51,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:35:51,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:51,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:35:51,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:51,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:35:51,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:51,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:35:51,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:51,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:35:51,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:51,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 02:35:51,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:51,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 02:35:51,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:51,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:51,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:51,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:51,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:51,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:51,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:51,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:51,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:51,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:35:51,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:51,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:35:51,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:51,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 02:35:51,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:51,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:35:51,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:51,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 02:35:51,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:51,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-19 02:35:51,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:51,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-19 02:35:51,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:52,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:52,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:52,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:52,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:52,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:52,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:52,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:35:52,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:52,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:35:52,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:52,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-19 02:35:52,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:52,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-19 02:35:52,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:52,069 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-08-19 02:35:52,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1965280283] [2020-08-19 02:35:52,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:35:52,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-19 02:35:52,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99394796] [2020-08-19 02:35:52,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-19 02:35:52,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:35:52,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-19 02:35:52,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-08-19 02:35:52,072 INFO L87 Difference]: Start difference. First operand 2882 states and 3603 transitions. Second operand 14 states. [2020-08-19 02:35:52,755 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:35:53,099 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:35:53,357 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:35:53,902 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:35:55,512 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:35:57,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:35:57,943 INFO L93 Difference]: Finished difference Result 5611 states and 7325 transitions. [2020-08-19 02:35:57,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-08-19 02:35:57,944 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 166 [2020-08-19 02:35:57,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:35:57,961 INFO L225 Difference]: With dead ends: 5611 [2020-08-19 02:35:57,961 INFO L226 Difference]: Without dead ends: 3113 [2020-08-19 02:35:57,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=364, Invalid=1528, Unknown=0, NotChecked=0, Total=1892 [2020-08-19 02:35:57,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3113 states. [2020-08-19 02:35:58,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3113 to 2736. [2020-08-19 02:35:58,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2736 states. [2020-08-19 02:35:58,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2736 states to 2736 states and 3204 transitions. [2020-08-19 02:35:58,476 INFO L78 Accepts]: Start accepts. Automaton has 2736 states and 3204 transitions. Word has length 166 [2020-08-19 02:35:58,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:35:58,477 INFO L479 AbstractCegarLoop]: Abstraction has 2736 states and 3204 transitions. [2020-08-19 02:35:58,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-19 02:35:58,477 INFO L276 IsEmpty]: Start isEmpty. Operand 2736 states and 3204 transitions. [2020-08-19 02:35:58,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-08-19 02:35:58,485 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:35:58,485 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-19 02:35:58,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 02:35:58,486 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:35:58,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:35:58,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1460495039, now seen corresponding path program 1 times [2020-08-19 02:35:58,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:35:58,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [753891609] [2020-08-19 02:35:58,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:35:58,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:58,764 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:35:58,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:35:58,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:58,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:35:58,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:58,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:35:58,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:58,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:35:58,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:58,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:35:58,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:58,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:35:58,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:58,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:35:58,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:58,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 02:35:58,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:58,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 02:35:58,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:58,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:58,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:58,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:58,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:58,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:58,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:58,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:58,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:58,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:35:58,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:58,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:35:58,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:58,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 02:35:58,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:58,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:35:58,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:58,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 02:35:58,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:58,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-19 02:35:58,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:58,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:35:58,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:58,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-19 02:35:58,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:58,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:58,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:58,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:58,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:58,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:58,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:58,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:35:58,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:58,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:35:58,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:58,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-08-19 02:35:58,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:58,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-08-19 02:35:58,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:58,981 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-08-19 02:35:58,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [753891609] [2020-08-19 02:35:58,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:35:58,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 02:35:58,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884553127] [2020-08-19 02:35:58,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 02:35:58,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:35:58,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 02:35:58,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-19 02:35:58,991 INFO L87 Difference]: Start difference. First operand 2736 states and 3204 transitions. Second operand 10 states. [2020-08-19 02:35:59,906 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:36:02,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:36:02,372 INFO L93 Difference]: Finished difference Result 4533 states and 5525 transitions. [2020-08-19 02:36:02,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-08-19 02:36:02,373 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 171 [2020-08-19 02:36:02,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:36:02,386 INFO L225 Difference]: With dead ends: 4533 [2020-08-19 02:36:02,387 INFO L226 Difference]: Without dead ends: 1835 [2020-08-19 02:36:02,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=354, Invalid=1128, Unknown=0, NotChecked=0, Total=1482 [2020-08-19 02:36:02,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1835 states. [2020-08-19 02:36:02,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1835 to 1269. [2020-08-19 02:36:02,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1269 states. [2020-08-19 02:36:02,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1471 transitions. [2020-08-19 02:36:02,657 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1471 transitions. Word has length 171 [2020-08-19 02:36:02,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:36:02,657 INFO L479 AbstractCegarLoop]: Abstraction has 1269 states and 1471 transitions. [2020-08-19 02:36:02,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 02:36:02,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1471 transitions. [2020-08-19 02:36:02,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-08-19 02:36:02,663 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:36:02,664 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:36:02,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 02:36:02,664 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:36:02,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:36:02,665 INFO L82 PathProgramCache]: Analyzing trace with hash 177222806, now seen corresponding path program 1 times [2020-08-19 02:36:02,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:36:02,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [325697818] [2020-08-19 02:36:02,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:36:02,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:03,046 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:36:03,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:36:03,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:03,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:36:03,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:03,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:36:03,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:03,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:36:03,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:03,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:36:03,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:03,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:36:03,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:03,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:36:03,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:03,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 02:36:03,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:03,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 02:36:03,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:03,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:36:03,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:03,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:36:03,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:03,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:36:03,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:03,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:36:03,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:03,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:36:03,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:03,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:36:03,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:03,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 02:36:03,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:03,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:36:03,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:03,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 02:36:03,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:03,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-19 02:36:03,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:03,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-19 02:36:03,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:03,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:36:03,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:03,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:36:03,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:03,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 02:36:03,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:03,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:36:03,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:03,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:36:03,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:03,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 02:36:03,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:03,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:36:03,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:03,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-19 02:36:03,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:03,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-08-19 02:36:03,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:03,473 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-08-19 02:36:03,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [325697818] [2020-08-19 02:36:03,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:36:03,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-19 02:36:03,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593300463] [2020-08-19 02:36:03,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-19 02:36:03,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:36:03,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-19 02:36:03,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-19 02:36:03,476 INFO L87 Difference]: Start difference. First operand 1269 states and 1471 transitions. Second operand 19 states. [2020-08-19 02:36:04,293 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:36:04,638 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:36:04,987 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:36:05,241 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:36:06,034 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:36:06,696 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:36:07,132 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191