/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 10:24:12,578 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 10:24:12,580 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 10:24:12,604 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 10:24:12,604 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 10:24:12,606 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 10:24:12,607 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 10:24:12,609 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 10:24:12,610 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 10:24:12,611 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 10:24:12,612 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 10:24:12,613 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 10:24:12,614 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 10:24:12,615 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 10:24:12,616 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 10:24:12,617 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 10:24:12,618 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 10:24:12,619 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 10:24:12,620 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 10:24:12,622 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 10:24:12,624 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 10:24:12,625 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 10:24:12,626 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 10:24:12,627 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 10:24:12,629 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 10:24:12,630 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 10:24:12,630 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 10:24:12,631 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 10:24:12,631 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 10:24:12,632 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 10:24:12,632 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 10:24:12,633 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 10:24:12,634 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 10:24:12,635 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 10:24:12,636 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 10:24:12,636 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 10:24:12,637 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 10:24:12,637 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 10:24:12,637 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 10:24:12,641 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 10:24:12,641 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 10:24:12,642 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 10:24:12,689 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 10:24:12,693 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 10:24:12,694 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 10:24:12,694 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 10:24:12,695 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 10:24:12,695 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 10:24:12,695 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 10:24:12,695 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 10:24:12,695 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 10:24:12,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 10:24:12,696 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 10:24:12,696 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 10:24:12,696 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 10:24:12,696 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 10:24:12,697 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 10:24:12,699 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 10:24:12,699 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 10:24:12,699 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 10:24:12,699 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 10:24:12,699 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 10:24:12,700 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 10:24:12,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 10:24:12,700 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 10:24:12,700 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 10:24:12,700 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 10:24:12,701 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 10:24:12,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 10:24:12,701 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 10:24:12,701 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 10:24:12,701 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 -> false [2020-08-18 10:24:13,005 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 10:24:13,018 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 10:24:13,022 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 10:24:13,023 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 10:24:13,023 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 10:24:13,024 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product35.cil.c [2020-08-18 10:24:13,089 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/023dfcd95/e5e05f9cef564a708e657fd002939111/FLAG199b7fe46 [2020-08-18 10:24:13,613 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 10:24:13,614 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product35.cil.c [2020-08-18 10:24:13,627 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/023dfcd95/e5e05f9cef564a708e657fd002939111/FLAG199b7fe46 [2020-08-18 10:24:13,963 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/023dfcd95/e5e05f9cef564a708e657fd002939111 [2020-08-18 10:24:13,974 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 10:24:13,976 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 10:24:13,978 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 10:24:13,978 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 10:24:13,981 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 10:24:13,982 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:24:13" (1/1) ... [2020-08-18 10:24:13,986 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c3ae440 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:13, skipping insertion in model container [2020-08-18 10:24:13,986 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:24:13" (1/1) ... [2020-08-18 10:24:13,994 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 10:24:14,047 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 10:24:14,483 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:24:14,497 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 10:24:14,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:24:14,616 INFO L208 MainTranslator]: Completed translation [2020-08-18 10:24:14,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:14 WrapperNode [2020-08-18 10:24:14,618 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 10:24:14,619 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 10:24:14,619 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 10:24:14,619 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 10:24:14,633 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:14" (1/1) ... [2020-08-18 10:24:14,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:14" (1/1) ... [2020-08-18 10:24:14,653 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:14" (1/1) ... [2020-08-18 10:24:14,653 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:14" (1/1) ... [2020-08-18 10:24:14,685 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:14" (1/1) ... [2020-08-18 10:24:14,695 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:14" (1/1) ... [2020-08-18 10:24:14,700 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:14" (1/1) ... [2020-08-18 10:24:14,708 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 10:24:14,709 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 10:24:14,709 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 10:24:14,709 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 10:24:14,711 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:14" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 10:24:14,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 10:24:14,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 10:24:14,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 10:24:14,774 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 10:24:14,774 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-18 10:24:14,774 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 10:24:14,774 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 10:24:14,775 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 10:24:14,775 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 10:24:14,775 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 10:24:14,775 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 10:24:14,775 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 10:24:14,775 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 10:24:14,776 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 10:24:14,776 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 10:24:14,776 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 10:24:14,776 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 10:24:14,776 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 10:24:14,776 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 10:24:14,776 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 10:24:14,777 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 10:24:14,777 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 10:24:14,777 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 10:24:14,777 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 10:24:14,777 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 10:24:14,778 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 10:24:14,778 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 10:24:14,778 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 10:24:14,778 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 10:24:14,778 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 10:24:14,778 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 10:24:14,779 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 10:24:14,779 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 10:24:14,779 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 10:24:14,779 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 10:24:14,779 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 10:24:14,779 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 10:24:14,780 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 10:24:14,780 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 10:24:14,780 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 10:24:14,780 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 10:24:14,780 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 10:24:14,780 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 10:24:14,781 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 10:24:14,781 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 10:24:14,781 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 10:24:14,781 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 10:24:14,781 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 10:24:14,781 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 10:24:14,782 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 10:24:14,782 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-18 10:24:14,782 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 10:24:14,782 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 10:24:14,782 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 10:24:14,782 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 10:24:14,782 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 10:24:14,783 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 10:24:14,783 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 10:24:14,783 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 10:24:14,783 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 10:24:14,783 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 10:24:14,783 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 10:24:14,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 10:24:14,784 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 10:24:14,784 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 10:24:14,784 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 10:24:14,784 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 10:24:14,784 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 10:24:14,785 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 10:24:14,785 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 10:24:14,785 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 10:24:14,785 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 10:24:14,785 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 10:24:14,785 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 10:24:14,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 10:24:14,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 10:24:14,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 10:24:14,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 10:24:14,786 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 10:24:14,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 10:24:14,786 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 10:24:14,787 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 10:24:14,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 10:24:14,787 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 10:24:14,787 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 10:24:14,787 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 10:24:14,787 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 10:24:14,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 10:24:14,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 10:24:14,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 10:24:15,879 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 10:24:15,879 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 10:24:15,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:24:15 BoogieIcfgContainer [2020-08-18 10:24:15,885 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 10:24:15,886 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 10:24:15,887 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 10:24:15,890 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 10:24:15,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:24:13" (1/3) ... [2020-08-18 10:24:15,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@501c237 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:24:15, skipping insertion in model container [2020-08-18 10:24:15,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:14" (2/3) ... [2020-08-18 10:24:15,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@501c237 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:24:15, skipping insertion in model container [2020-08-18 10:24:15,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:24:15" (3/3) ... [2020-08-18 10:24:15,894 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product35.cil.c [2020-08-18 10:24:15,905 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 10:24:15,914 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 10:24:15,929 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 10:24:15,955 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 10:24:15,955 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 10:24:15,956 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 10:24:15,956 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 10:24:15,956 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 10:24:15,956 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 10:24:15,957 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 10:24:15,957 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 10:24:15,979 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states. [2020-08-18 10:24:15,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 10:24:15,990 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:24:15,991 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] [2020-08-18 10:24:15,991 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:24:15,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:24:15,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1148002369, now seen corresponding path program 1 times [2020-08-18 10:24:16,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:24:16,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390851924] [2020-08-18 10:24:16,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:24:16,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:16,736 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:24:16,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:24:16,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:16,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:24:16,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:16,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:24:16,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:16,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:24:16,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:16,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:24:16,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:16,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 10:24:16,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:16,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 10:24:16,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:16,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:24:16,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1390851924] [2020-08-18 10:24:16,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:24:16,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 10:24:16,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383786503] [2020-08-18 10:24:16,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 10:24:16,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:24:16,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 10:24:16,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 10:24:16,846 INFO L87 Difference]: Start difference. First operand 157 states. Second operand 3 states. [2020-08-18 10:24:17,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:24:17,929 INFO L93 Difference]: Finished difference Result 269 states and 354 transitions. [2020-08-18 10:24:17,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 10:24:17,932 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 10:24:17,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:24:17,946 INFO L225 Difference]: With dead ends: 269 [2020-08-18 10:24:17,947 INFO L226 Difference]: Without dead ends: 146 [2020-08-18 10:24:17,952 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 10:24:17,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-08-18 10:24:18,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 114. [2020-08-18 10:24:18,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-18 10:24:18,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 133 transitions. [2020-08-18 10:24:18,042 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 133 transitions. Word has length 46 [2020-08-18 10:24:18,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:24:18,043 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 133 transitions. [2020-08-18 10:24:18,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 10:24:18,044 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 133 transitions. [2020-08-18 10:24:18,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 10:24:18,047 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:24:18,047 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] [2020-08-18 10:24:18,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 10:24:18,048 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:24:18,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:24:18,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1455677075, now seen corresponding path program 1 times [2020-08-18 10:24:18,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:24:18,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1089982449] [2020-08-18 10:24:18,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:24:18,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:18,352 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:24:18,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:24:18,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:18,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:24:18,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:18,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:24:18,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:18,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:24:18,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:18,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:24:18,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:18,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 10:24:18,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:18,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 10:24:18,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:18,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:24:18,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1089982449] [2020-08-18 10:24:18,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:24:18,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 10:24:18,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664388447] [2020-08-18 10:24:18,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 10:24:18,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:24:18,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 10:24:18,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 10:24:18,436 INFO L87 Difference]: Start difference. First operand 114 states and 133 transitions. Second operand 4 states. [2020-08-18 10:24:18,877 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:24:19,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:24:19,629 INFO L93 Difference]: Finished difference Result 193 states and 235 transitions. [2020-08-18 10:24:19,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 10:24:19,630 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 10:24:19,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:24:19,634 INFO L225 Difference]: With dead ends: 193 [2020-08-18 10:24:19,634 INFO L226 Difference]: Without dead ends: 130 [2020-08-18 10:24:19,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 10:24:19,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-08-18 10:24:19,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 105. [2020-08-18 10:24:19,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-08-18 10:24:19,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 121 transitions. [2020-08-18 10:24:19,673 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 121 transitions. Word has length 47 [2020-08-18 10:24:19,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:24:19,673 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 121 transitions. [2020-08-18 10:24:19,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 10:24:19,674 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 121 transitions. [2020-08-18 10:24:19,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 10:24:19,676 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:24:19,676 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:24:19,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 10:24:19,676 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:24:19,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:24:19,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1980509365, now seen corresponding path program 1 times [2020-08-18 10:24:19,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:24:19,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592872152] [2020-08-18 10:24:19,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:24:19,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:20,017 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:24:20,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:24:20,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:20,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:24:20,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:20,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:24:20,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:20,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:24:20,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:20,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:24:20,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:20,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 10:24:20,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:20,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 10:24:20,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:20,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:24:20,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [592872152] [2020-08-18 10:24:20,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:24:20,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 10:24:20,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323341310] [2020-08-18 10:24:20,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 10:24:20,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:24:20,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 10:24:20,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 10:24:20,114 INFO L87 Difference]: Start difference. First operand 105 states and 121 transitions. Second operand 8 states. [2020-08-18 10:24:20,546 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:24:20,855 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:24:21,099 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:24:21,363 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:24:22,079 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:24:23,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:24:23,397 INFO L93 Difference]: Finished difference Result 363 states and 449 transitions. [2020-08-18 10:24:23,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 10:24:23,401 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-18 10:24:23,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:24:23,405 INFO L225 Difference]: With dead ends: 363 [2020-08-18 10:24:23,405 INFO L226 Difference]: Without dead ends: 282 [2020-08-18 10:24:23,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-18 10:24:23,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-08-18 10:24:23,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 216. [2020-08-18 10:24:23,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-08-18 10:24:23,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 258 transitions. [2020-08-18 10:24:23,478 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 258 transitions. Word has length 51 [2020-08-18 10:24:23,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:24:23,479 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 258 transitions. [2020-08-18 10:24:23,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 10:24:23,479 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 258 transitions. [2020-08-18 10:24:23,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 10:24:23,482 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:24:23,482 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] [2020-08-18 10:24:23,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 10:24:23,483 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:24:23,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:24:23,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1381408640, now seen corresponding path program 1 times [2020-08-18 10:24:23,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:24:23,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1066627512] [2020-08-18 10:24:23,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:24:23,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:23,839 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:24:23,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:24:23,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:23,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:24:23,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:23,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:24:23,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:23,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:24:23,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:23,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:24:23,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:23,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 10:24:23,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:23,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 10:24:23,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:23,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 10:24:23,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:23,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:24:23,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1066627512] [2020-08-18 10:24:23,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:24:23,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 10:24:23,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015816265] [2020-08-18 10:24:23,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 10:24:23,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:24:23,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 10:24:23,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 10:24:23,982 INFO L87 Difference]: Start difference. First operand 216 states and 258 transitions. Second operand 12 states. [2020-08-18 10:24:24,404 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:24:24,722 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:24:24,978 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:24:25,204 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:24:25,752 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:24:26,523 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:24:26,880 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:24:27,177 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:24:27,466 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:24:27,721 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:24:28,057 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:24:28,325 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:24:28,569 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:24:29,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:24:29,932 INFO L93 Difference]: Finished difference Result 861 states and 1198 transitions. [2020-08-18 10:24:29,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 10:24:29,933 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-18 10:24:29,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:24:29,946 INFO L225 Difference]: With dead ends: 861 [2020-08-18 10:24:29,949 INFO L226 Difference]: Without dead ends: 669 [2020-08-18 10:24:29,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-18 10:24:29,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2020-08-18 10:24:30,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 580. [2020-08-18 10:24:30,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 580 states. [2020-08-18 10:24:30,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 732 transitions. [2020-08-18 10:24:30,096 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 732 transitions. Word has length 57 [2020-08-18 10:24:30,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:24:30,097 INFO L479 AbstractCegarLoop]: Abstraction has 580 states and 732 transitions. [2020-08-18 10:24:30,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 10:24:30,097 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 732 transitions. [2020-08-18 10:24:30,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-18 10:24:30,101 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:24:30,101 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] [2020-08-18 10:24:30,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 10:24:30,101 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:24:30,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:24:30,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1781576154, now seen corresponding path program 1 times [2020-08-18 10:24:30,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:24:30,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [47917646] [2020-08-18 10:24:30,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:24:30,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:30,339 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:24:30,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:24:30,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:30,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:24:30,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:30,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:24:30,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:30,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:24:30,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:30,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:24:30,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:30,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 10:24:30,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:30,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 10:24:30,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:30,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 10:24:30,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:30,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 10:24:30,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:30,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:24:30,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [47917646] [2020-08-18 10:24:30,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:24:30,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 10:24:30,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005335297] [2020-08-18 10:24:30,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 10:24:30,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:24:30,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 10:24:30,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 10:24:30,455 INFO L87 Difference]: Start difference. First operand 580 states and 732 transitions. Second operand 6 states. [2020-08-18 10:24:30,831 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:24:32,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:24:32,333 INFO L93 Difference]: Finished difference Result 1441 states and 1939 transitions. [2020-08-18 10:24:32,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 10:24:32,344 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-18 10:24:32,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:24:32,350 INFO L225 Difference]: With dead ends: 1441 [2020-08-18 10:24:32,351 INFO L226 Difference]: Without dead ends: 885 [2020-08-18 10:24:32,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-18 10:24:32,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2020-08-18 10:24:32,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 822. [2020-08-18 10:24:32,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 822 states. [2020-08-18 10:24:32,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 1040 transitions. [2020-08-18 10:24:32,533 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 1040 transitions. Word has length 61 [2020-08-18 10:24:32,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:24:32,535 INFO L479 AbstractCegarLoop]: Abstraction has 822 states and 1040 transitions. [2020-08-18 10:24:32,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 10:24:32,535 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 1040 transitions. [2020-08-18 10:24:32,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 10:24:32,540 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:24:32,540 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:24:32,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 10:24:32,541 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:24:32,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:24:32,541 INFO L82 PathProgramCache]: Analyzing trace with hash -2005608044, now seen corresponding path program 1 times [2020-08-18 10:24:32,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:24:32,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1485286489] [2020-08-18 10:24:32,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:24:32,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:32,821 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:24:32,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:24:32,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:32,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:24:32,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:32,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:24:32,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:32,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:24:32,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:32,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:24:32,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:32,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 10:24:32,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:32,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 10:24:32,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:32,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 10:24:32,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:32,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:24:32,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:32,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:24:32,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:32,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 10:24:32,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:32,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 10:24:32,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:32,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 10:24:32,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:32,995 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 10:24:32,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1485286489] [2020-08-18 10:24:32,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:24:32,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 10:24:32,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805110846] [2020-08-18 10:24:32,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 10:24:32,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:24:32,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 10:24:32,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-18 10:24:32,997 INFO L87 Difference]: Start difference. First operand 822 states and 1040 transitions. Second operand 10 states. [2020-08-18 10:24:33,570 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-18 10:24:34,182 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:24:35,651 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:24:36,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:24:36,802 INFO L93 Difference]: Finished difference Result 1577 states and 2071 transitions. [2020-08-18 10:24:36,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 10:24:36,803 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-18 10:24:36,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:24:36,812 INFO L225 Difference]: With dead ends: 1577 [2020-08-18 10:24:36,812 INFO L226 Difference]: Without dead ends: 1008 [2020-08-18 10:24:36,815 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-18 10:24:36,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2020-08-18 10:24:36,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 929. [2020-08-18 10:24:36,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 929 states. [2020-08-18 10:24:37,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1152 transitions. [2020-08-18 10:24:37,003 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1152 transitions. Word has length 88 [2020-08-18 10:24:37,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:24:37,004 INFO L479 AbstractCegarLoop]: Abstraction has 929 states and 1152 transitions. [2020-08-18 10:24:37,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 10:24:37,004 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1152 transitions. [2020-08-18 10:24:37,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-08-18 10:24:37,007 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:24:37,007 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:24:37,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 10:24:37,008 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:24:37,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:24:37,008 INFO L82 PathProgramCache]: Analyzing trace with hash -248690710, now seen corresponding path program 1 times [2020-08-18 10:24:37,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:24:37,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [244713001] [2020-08-18 10:24:37,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:24:37,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:37,296 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:24:37,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:24:37,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:37,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:24:37,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:37,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:24:37,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:37,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:24:37,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:37,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:24:37,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:37,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 10:24:37,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:37,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:24:37,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:37,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:24:37,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:37,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:24:37,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:37,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:24:37,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:37,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-18 10:24:37,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:37,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:24:37,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:37,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 10:24:37,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:37,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 10:24:37,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:37,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:24:37,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:37,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 10:24:37,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:37,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-18 10:24:37,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:37,452 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-18 10:24:37,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [244713001] [2020-08-18 10:24:37,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:24:37,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 10:24:37,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103129065] [2020-08-18 10:24:37,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 10:24:37,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:24:37,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 10:24:37,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-18 10:24:37,456 INFO L87 Difference]: Start difference. First operand 929 states and 1152 transitions. Second operand 12 states. [2020-08-18 10:24:38,070 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:24:38,298 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:24:38,516 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:24:39,110 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:24:39,348 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:24:39,570 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:24:40,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:24:40,590 INFO L93 Difference]: Finished difference Result 1933 states and 2512 transitions. [2020-08-18 10:24:40,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 10:24:40,591 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 109 [2020-08-18 10:24:40,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:24:40,600 INFO L225 Difference]: With dead ends: 1933 [2020-08-18 10:24:40,600 INFO L226 Difference]: Without dead ends: 1028 [2020-08-18 10:24:40,605 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 10:24:40,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2020-08-18 10:24:40,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 929. [2020-08-18 10:24:40,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 929 states. [2020-08-18 10:24:40,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1148 transitions. [2020-08-18 10:24:40,814 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1148 transitions. Word has length 109 [2020-08-18 10:24:40,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:24:40,815 INFO L479 AbstractCegarLoop]: Abstraction has 929 states and 1148 transitions. [2020-08-18 10:24:40,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 10:24:40,816 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1148 transitions. [2020-08-18 10:24:40,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-08-18 10:24:40,819 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:24:40,819 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:24:40,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 10:24:40,820 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:24:40,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:24:40,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1276162578, now seen corresponding path program 1 times [2020-08-18 10:24:40,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:24:40,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [942968112] [2020-08-18 10:24:40,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:24:40,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:41,094 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:24:41,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:24:41,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:41,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:24:41,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:41,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:24:41,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:41,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:24:41,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:41,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:24:41,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:41,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 10:24:41,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:41,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:24:41,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:41,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:24:41,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:41,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:24:41,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:41,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:24:41,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:41,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-18 10:24:41,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:41,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:24:41,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:41,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 10:24:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:41,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 10:24:41,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:41,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 10:24:41,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:41,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:24:41,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:41,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 10:24:41,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:41,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 10:24:41,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:41,293 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-18 10:24:41,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [942968112] [2020-08-18 10:24:41,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:24:41,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 10:24:41,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352967218] [2020-08-18 10:24:41,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 10:24:41,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:24:41,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 10:24:41,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 10:24:41,297 INFO L87 Difference]: Start difference. First operand 929 states and 1148 transitions. Second operand 10 states. [2020-08-18 10:24:42,423 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:24:42,694 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:24:42,955 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:24:43,207 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:24:44,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:24:44,037 INFO L93 Difference]: Finished difference Result 1757 states and 2231 transitions. [2020-08-18 10:24:44,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 10:24:44,038 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 113 [2020-08-18 10:24:44,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:24:44,045 INFO L225 Difference]: With dead ends: 1757 [2020-08-18 10:24:44,045 INFO L226 Difference]: Without dead ends: 852 [2020-08-18 10:24:44,049 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 10:24:44,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2020-08-18 10:24:44,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 802. [2020-08-18 10:24:44,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 802 states. [2020-08-18 10:24:44,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 973 transitions. [2020-08-18 10:24:44,235 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 973 transitions. Word has length 113 [2020-08-18 10:24:44,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:24:44,236 INFO L479 AbstractCegarLoop]: Abstraction has 802 states and 973 transitions. [2020-08-18 10:24:44,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 10:24:44,236 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 973 transitions. [2020-08-18 10:24:44,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-08-18 10:24:44,240 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:24:44,240 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:24:44,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 10:24:44,240 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:24:44,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:24:44,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1129880655, now seen corresponding path program 1 times [2020-08-18 10:24:44,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:24:44,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [171689374] [2020-08-18 10:24:44,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:24:44,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:44,608 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:24:44,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:24:44,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:44,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:24:44,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:44,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:24:44,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:44,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:24:44,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:44,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:24:44,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:44,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 10:24:44,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:44,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 10:24:44,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:44,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:24:44,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:44,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:24:44,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:44,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:24:44,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:44,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:24:44,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:44,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-18 10:24:44,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:44,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:24:44,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:44,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 10:24:44,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:44,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 10:24:44,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:44,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:24:44,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:44,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 10:24:44,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:44,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 10:24:44,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:44,854 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 10:24:44,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [171689374] [2020-08-18 10:24:44,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:24:44,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 10:24:44,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116441747] [2020-08-18 10:24:44,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 10:24:44,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:24:44,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 10:24:44,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-18 10:24:44,857 INFO L87 Difference]: Start difference. First operand 802 states and 973 transitions. Second operand 12 states. [2020-08-18 10:24:45,552 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:24:46,560 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:24:46,842 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:24:47,102 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:24:47,354 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:24:47,619 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:24:47,993 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:24:48,552 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:24:48,847 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:24:49,099 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:24:50,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:24:50,716 INFO L93 Difference]: Finished difference Result 1952 states and 2520 transitions. [2020-08-18 10:24:50,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 10:24:50,717 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 113 [2020-08-18 10:24:50,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:24:50,726 INFO L225 Difference]: With dead ends: 1952 [2020-08-18 10:24:50,726 INFO L226 Difference]: Without dead ends: 1319 [2020-08-18 10:24:50,730 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=251, Invalid=619, Unknown=0, NotChecked=0, Total=870 [2020-08-18 10:24:50,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2020-08-18 10:24:50,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 1155. [2020-08-18 10:24:50,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1155 states. [2020-08-18 10:24:50,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1419 transitions. [2020-08-18 10:24:50,952 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1419 transitions. Word has length 113 [2020-08-18 10:24:50,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:24:50,953 INFO L479 AbstractCegarLoop]: Abstraction has 1155 states and 1419 transitions. [2020-08-18 10:24:50,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 10:24:50,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1419 transitions. [2020-08-18 10:24:50,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-18 10:24:50,958 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:24:50,958 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:24:50,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 10:24:50,959 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:24:50,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:24:50,959 INFO L82 PathProgramCache]: Analyzing trace with hash -2054287532, now seen corresponding path program 1 times [2020-08-18 10:24:50,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:24:50,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1825237256] [2020-08-18 10:24:50,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:24:50,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:51,249 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:24:51,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:24:51,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:51,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:24:51,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:51,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:24:51,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:51,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:24:51,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:51,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:24:51,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:51,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 10:24:51,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:51,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 10:24:51,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:51,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:24:51,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:51,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:24:51,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:51,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:24:51,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:51,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:24:51,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:51,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-18 10:24:51,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:51,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:24:51,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:51,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 10:24:51,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:51,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:24:51,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:51,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:24:51,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:51,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:24:51,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:51,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 10:24:51,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:51,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:24:51,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:51,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-18 10:24:51,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:51,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-18 10:24:51,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:51,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-18 10:24:51,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:51,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-08-18 10:24:51,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:51,513 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 34 proven. 5 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-08-18 10:24:51,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1825237256] [2020-08-18 10:24:51,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:24:51,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 10:24:51,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195257681] [2020-08-18 10:24:51,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 10:24:51,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:24:51,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 10:24:51,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-08-18 10:24:51,521 INFO L87 Difference]: Start difference. First operand 1155 states and 1419 transitions. Second operand 13 states. [2020-08-18 10:24:52,226 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:24:52,448 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:24:52,664 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:24:53,105 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:24:53,980 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:24:55,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:24:55,347 INFO L93 Difference]: Finished difference Result 1952 states and 2448 transitions. [2020-08-18 10:24:55,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-18 10:24:55,350 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 146 [2020-08-18 10:24:55,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:24:55,358 INFO L225 Difference]: With dead ends: 1952 [2020-08-18 10:24:55,359 INFO L226 Difference]: Without dead ends: 1017 [2020-08-18 10:24:55,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=146, Invalid=556, Unknown=0, NotChecked=0, Total=702 [2020-08-18 10:24:55,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2020-08-18 10:24:55,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 739. [2020-08-18 10:24:55,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 739 states. [2020-08-18 10:24:55,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 854 transitions. [2020-08-18 10:24:55,520 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 854 transitions. Word has length 146 [2020-08-18 10:24:55,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:24:55,521 INFO L479 AbstractCegarLoop]: Abstraction has 739 states and 854 transitions. [2020-08-18 10:24:55,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 10:24:55,522 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 854 transitions. [2020-08-18 10:24:55,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-18 10:24:55,525 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:24:55,525 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:24:55,525 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 10:24:55,525 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:24:55,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:24:55,526 INFO L82 PathProgramCache]: Analyzing trace with hash -793208668, now seen corresponding path program 2 times [2020-08-18 10:24:55,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:24:55,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058568258] [2020-08-18 10:24:55,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:24:55,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:55,865 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:24:55,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:24:55,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:55,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:24:55,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:55,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:24:55,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:55,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:24:55,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:55,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:24:55,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:55,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 10:24:55,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:55,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 10:24:55,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:55,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:24:55,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:55,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:24:55,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:55,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:24:55,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:55,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:24:55,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:55,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-18 10:24:55,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:55,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:24:55,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:55,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 10:24:55,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:56,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:24:56,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:56,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:24:56,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:56,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:24:56,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:56,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 10:24:56,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:56,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:24:56,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:56,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-18 10:24:56,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:56,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-18 10:24:56,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:56,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-18 10:24:56,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:56,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:24:56,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:56,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-08-18 10:24:56,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:56,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-18 10:24:56,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:56,112 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 37 proven. 18 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-08-18 10:24:56,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2058568258] [2020-08-18 10:24:56,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:24:56,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-18 10:24:56,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529914204] [2020-08-18 10:24:56,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-18 10:24:56,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:24:56,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-18 10:24:56,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-08-18 10:24:56,114 INFO L87 Difference]: Start difference. First operand 739 states and 854 transitions. Second operand 14 states. [2020-08-18 10:24:56,606 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:24:57,247 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:24:57,752 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:24:58,026 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:24:58,276 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:24:58,536 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:24:58,833 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:24:59,074 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:25:00,315 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:25:00,563 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:01,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:25:01,627 INFO L93 Difference]: Finished difference Result 1618 states and 2050 transitions. [2020-08-18 10:25:01,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-18 10:25:01,628 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 152 [2020-08-18 10:25:01,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:25:01,644 INFO L225 Difference]: With dead ends: 1618 [2020-08-18 10:25:01,644 INFO L226 Difference]: Without dead ends: 1125 [2020-08-18 10:25:01,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 57 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=884, Unknown=0, NotChecked=0, Total=1190 [2020-08-18 10:25:01,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2020-08-18 10:25:01,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 728. [2020-08-18 10:25:01,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 728 states. [2020-08-18 10:25:01,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 848 transitions. [2020-08-18 10:25:01,816 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 848 transitions. Word has length 152 [2020-08-18 10:25:01,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:25:01,816 INFO L479 AbstractCegarLoop]: Abstraction has 728 states and 848 transitions. [2020-08-18 10:25:01,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-18 10:25:01,817 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 848 transitions. [2020-08-18 10:25:01,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-18 10:25:01,819 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:25:01,820 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:25:01,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 10:25:01,820 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:25:01,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:25:01,820 INFO L82 PathProgramCache]: Analyzing trace with hash -127576802, now seen corresponding path program 3 times [2020-08-18 10:25:01,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:25:01,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [639093795] [2020-08-18 10:25:01,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:25:01,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 10:25:01,889 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 10:25:01,890 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 10:25:01,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 10:25:01,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 10:25:01 BoogieIcfgContainer [2020-08-18 10:25:01,925 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 10:25:01,926 INFO L168 Benchmark]: Toolchain (without parser) took 47950.49 ms. Allocated memory was 138.9 MB in the beginning and 780.7 MB in the end (delta: 641.7 MB). Free memory was 100.3 MB in the beginning and 108.1 MB in the end (delta: -7.8 MB). Peak memory consumption was 633.9 MB. Max. memory is 7.1 GB. [2020-08-18 10:25:01,927 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 10:25:01,928 INFO L168 Benchmark]: CACSL2BoogieTranslator took 640.93 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 100.1 MB in the beginning and 169.2 MB in the end (delta: -69.1 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. [2020-08-18 10:25:01,928 INFO L168 Benchmark]: Boogie Preprocessor took 89.87 ms. Allocated memory is still 201.9 MB. Free memory was 169.2 MB in the beginning and 164.5 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. [2020-08-18 10:25:01,929 INFO L168 Benchmark]: RCFGBuilder took 1176.14 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 164.5 MB in the beginning and 196.5 MB in the end (delta: -32.0 MB). Peak memory consumption was 83.1 MB. Max. memory is 7.1 GB. [2020-08-18 10:25:01,930 INFO L168 Benchmark]: TraceAbstraction took 46038.25 ms. Allocated memory was 234.4 MB in the beginning and 780.7 MB in the end (delta: 546.3 MB). Free memory was 196.5 MB in the beginning and 108.1 MB in the end (delta: 88.3 MB). Peak memory consumption was 634.6 MB. Max. memory is 7.1 GB. [2020-08-18 10:25:01,933 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 640.93 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 100.1 MB in the beginning and 169.2 MB in the end (delta: -69.1 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 89.87 ms. Allocated memory is still 201.9 MB. Free memory was 169.2 MB in the beginning and 164.5 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1176.14 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 164.5 MB in the beginning and 196.5 MB in the end (delta: -32.0 MB). Peak memory consumption was 83.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 46038.25 ms. Allocated memory was 234.4 MB in the beginning and 780.7 MB in the end (delta: 546.3 MB). Free memory was 196.5 MB in the beginning and 108.1 MB in the end (delta: 88.3 MB). Peak memory consumption was 634.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 784]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L148] int pumpRunning = 0; [L149] int systemActive = 1; [L315] int cleanupTimeShifts = 4; [L583] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L824] int waterLevel = 1; [L825] int methaneLevelCritical = 0; [L391] int retValue_acc ; [L392] int tmp ; [L396] FCALL select_helpers() [L397] FCALL select_features() [L398] CALL, EXPR valid_product() [L815] int retValue_acc ; [L818] retValue_acc = 1 [L819] return (retValue_acc); [L398] RET, EXPR valid_product() [L398] tmp = valid_product() [L400] COND TRUE \read(tmp) [L402] FCALL setup() [L403] CALL runTest() [L382] CALL test() [L46] int splverifierCounter ; [L47] int tmp ; [L48] int tmp___0 ; [L49] int tmp___1 ; [L50] int tmp___2 ; [L53] splverifierCounter = 0 [L55] COND TRUE 1 [L57] COND TRUE splverifierCounter < 4 [L63] tmp = __VERIFIER_nondet_int() [L65] COND TRUE \read(tmp) [L67] CALL waterRise() [L842] COND TRUE waterLevel < 2 [L843] waterLevel = waterLevel + 1 [L67] RET waterRise() [L73] tmp___0 = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp___0)) [L83] tmp___2 = __VERIFIER_nondet_int() [L85] COND TRUE \read(tmp___2) [L100] CALL timeShift() [L155] COND FALSE !(\read(pumpRunning)) [L162] COND TRUE \read(systemActive) [L164] CALL processEnvironment() [L184] int tmp ; [L187] COND TRUE ! pumpRunning [L189] CALL, EXPR isHighWaterLevel() [L281] int retValue_acc ; [L282] int tmp ; [L283] int tmp___0 ; [L287] CALL, EXPR isHighWaterSensorDry() [L904] int retValue_acc ; [L907] COND FALSE !(waterLevel < 2) [L911] retValue_acc = 0 [L912] return (retValue_acc); [L287] RET, EXPR isHighWaterSensorDry() [L287] tmp = isHighWaterSensorDry() [L289] COND FALSE !(\read(tmp)) [L292] tmp___0 = 1 [L294] retValue_acc = tmp___0 [L295] return (retValue_acc); [L189] RET, EXPR isHighWaterLevel() [L189] tmp = isHighWaterLevel() [L191] COND TRUE \read(tmp) [L193] CALL activatePump() [L212] pumpRunning = 1 [L193] RET activatePump() [L164] RET processEnvironment() [L170] CALL __utac_acc__Specification4_spec__1() [L116] int tmp ; [L117] int tmp___0 ; [L121] CALL, EXPR getWaterLevel() [L895] int retValue_acc ; [L898] retValue_acc = waterLevel [L899] return (retValue_acc); [L121] RET, EXPR getWaterLevel() [L121] tmp = getWaterLevel() [L123] COND FALSE !(tmp == 0) [L170] RET __utac_acc__Specification4_spec__1() [L100] RET timeShift() [L55] COND TRUE 1 [L57] COND TRUE splverifierCounter < 4 [L63] tmp = __VERIFIER_nondet_int() [L65] COND FALSE !(\read(tmp)) [L73] tmp___0 = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp___0)) [L83] tmp___2 = __VERIFIER_nondet_int() [L85] COND TRUE \read(tmp___2) [L100] CALL timeShift() [L155] COND TRUE \read(pumpRunning) [L157] CALL lowerWaterLevel() [L830] COND TRUE waterLevel > 0 [L831] waterLevel = waterLevel - 1 [L157] RET lowerWaterLevel() [L162] COND TRUE \read(systemActive) [L164] CALL processEnvironment() [L184] int tmp ; [L187] COND FALSE !(! pumpRunning) [L202] FCALL processEnvironment__wrappee__base() [L164] RET processEnvironment() [L170] CALL __utac_acc__Specification4_spec__1() [L116] int tmp ; [L117] int tmp___0 ; [L121] CALL, EXPR getWaterLevel() [L895] int retValue_acc ; [L898] retValue_acc = waterLevel [L899] return (retValue_acc); [L121] RET, EXPR getWaterLevel() [L121] tmp = getWaterLevel() [L123] COND FALSE !(tmp == 0) [L170] RET __utac_acc__Specification4_spec__1() [L100] RET timeShift() [L55] COND TRUE 1 [L57] COND TRUE splverifierCounter < 4 [L63] tmp = __VERIFIER_nondet_int() [L65] COND FALSE !(\read(tmp)) [L73] tmp___0 = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp___0)) [L83] tmp___2 = __VERIFIER_nondet_int() [L85] COND TRUE \read(tmp___2) [L100] CALL timeShift() [L155] COND TRUE \read(pumpRunning) [L157] CALL lowerWaterLevel() [L830] COND TRUE waterLevel > 0 [L831] waterLevel = waterLevel - 1 [L157] RET lowerWaterLevel() [L162] COND TRUE \read(systemActive) [L164] CALL processEnvironment() [L184] int tmp ; [L187] COND FALSE !(! pumpRunning) [L202] FCALL processEnvironment__wrappee__base() [L164] RET processEnvironment() [L170] CALL __utac_acc__Specification4_spec__1() [L116] int tmp ; [L117] int tmp___0 ; [L121] CALL, EXPR getWaterLevel() [L895] int retValue_acc ; [L898] retValue_acc = waterLevel [L899] return (retValue_acc); [L121] RET, EXPR getWaterLevel() [L121] tmp = getWaterLevel() [L123] COND TRUE tmp == 0 [L125] CALL, EXPR isPumpRunning() [L236] int retValue_acc ; [L239] retValue_acc = pumpRunning [L240] return (retValue_acc); [L125] RET, EXPR isPumpRunning() [L125] tmp___0 = isPumpRunning() [L127] COND TRUE \read(tmp___0) [L129] CALL __automaton_fail() [L784] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 221 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 45.9s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 38.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1298 SDtfs, 3324 SDslu, 1920 SDs, 0 SdLazy, 8995 SolverSat, 2431 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 18.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 543 GetRequests, 345 SyntacticMatches, 11 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 868 ImplicationChecksByTransitivity, 17.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1155occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.6s AutomataMinimizationTime, 11 MinimizatonAttempts, 1342 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 1131 NumberOfCodeBlocks, 1131 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 972 ConstructedInterpolants, 0 QuantifiedInterpolants, 366987 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 214/252 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...