/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product44.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 00:22:06,572 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 00:22:06,574 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 00:22:06,601 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 00:22:06,601 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 00:22:06,603 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 00:22:06,604 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 00:22:06,606 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 00:22:06,607 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 00:22:06,608 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 00:22:06,609 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 00:22:06,610 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 00:22:06,610 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 00:22:06,611 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 00:22:06,612 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 00:22:06,613 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 00:22:06,614 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 00:22:06,615 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 00:22:06,616 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 00:22:06,618 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 00:22:06,619 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 00:22:06,621 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 00:22:06,622 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 00:22:06,622 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 00:22:06,625 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 00:22:06,625 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 00:22:06,625 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 00:22:06,626 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 00:22:06,627 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 00:22:06,628 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 00:22:06,628 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 00:22:06,629 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 00:22:06,629 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 00:22:06,630 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 00:22:06,631 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 00:22:06,631 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 00:22:06,632 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 00:22:06,632 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 00:22:06,632 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 00:22:06,633 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 00:22:06,634 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 00:22:06,635 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 [2020-08-22 00:22:06,657 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 00:22:06,657 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 00:22:06,658 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 00:22:06,658 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 00:22:06,658 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 00:22:06,659 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 00:22:06,659 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 00:22:06,659 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 00:22:06,659 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 00:22:06,659 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 00:22:06,660 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 00:22:06,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 00:22:06,660 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 00:22:06,660 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 00:22:06,660 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 00:22:06,661 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 00:22:06,661 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 00:22:06,661 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 00:22:06,661 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 00:22:06,661 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 00:22:06,662 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 00:22:06,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 00:22:06,662 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 00:22:06,662 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 00:22:06,662 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 00:22:06,663 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 00:22:06,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 00:22:06,663 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 00:22:06,663 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 00:22:06,663 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-08-22 00:22:06,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 00:22:06,996 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 00:22:07,000 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 00:22:07,001 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 00:22:07,002 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 00:22:07,002 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product44.cil.c [2020-08-22 00:22:07,059 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c91d2090/6c2dcaa937ed47d192c8338e3bb90fb5/FLAGed89b1106 [2020-08-22 00:22:07,607 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 00:22:07,608 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product44.cil.c [2020-08-22 00:22:07,625 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c91d2090/6c2dcaa937ed47d192c8338e3bb90fb5/FLAGed89b1106 [2020-08-22 00:22:07,889 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c91d2090/6c2dcaa937ed47d192c8338e3bb90fb5 [2020-08-22 00:22:07,898 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 00:22:07,900 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 00:22:07,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 00:22:07,901 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 00:22:07,905 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 00:22:07,906 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:22:07" (1/1) ... [2020-08-22 00:22:07,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e8d2598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:22:07, skipping insertion in model container [2020-08-22 00:22:07,909 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:22:07" (1/1) ... [2020-08-22 00:22:07,916 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 00:22:07,973 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 00:22:08,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:22:08,374 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 00:22:08,488 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:22:08,537 INFO L208 MainTranslator]: Completed translation [2020-08-22 00:22:08,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:22:08 WrapperNode [2020-08-22 00:22:08,538 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 00:22:08,538 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 00:22:08,539 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 00:22:08,539 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 00:22:08,551 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:22:08" (1/1) ... [2020-08-22 00:22:08,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:22:08" (1/1) ... [2020-08-22 00:22:08,573 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:22:08" (1/1) ... [2020-08-22 00:22:08,574 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:22:08" (1/1) ... [2020-08-22 00:22:08,615 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:22:08" (1/1) ... [2020-08-22 00:22:08,632 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:22:08" (1/1) ... [2020-08-22 00:22:08,637 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:22:08" (1/1) ... [2020-08-22 00:22:08,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 00:22:08,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 00:22:08,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 00:22:08,647 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 00:22:08,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:22:08" (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 [2020-08-22 00:22:08,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 00:22:08,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 00:22:08,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 00:22:08,710 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 00:22:08,710 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 00:22:08,711 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 00:22:08,711 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 00:22:08,711 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 00:22:08,711 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 00:22:08,711 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 00:22:08,711 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 00:22:08,711 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 00:22:08,712 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 00:22:08,712 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 00:22:08,712 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-22 00:22:08,712 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 00:22:08,712 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 00:22:08,712 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 00:22:08,713 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 00:22:08,713 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 00:22:08,713 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 00:22:08,713 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 00:22:08,713 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 00:22:08,713 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 00:22:08,714 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 00:22:08,714 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 00:22:08,714 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 00:22:08,714 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 00:22:08,714 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 00:22:08,714 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 00:22:08,715 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-22 00:22:08,715 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 00:22:08,715 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 00:22:08,715 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 00:22:08,715 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 00:22:08,715 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 00:22:08,716 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 00:22:08,716 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 00:22:08,716 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 00:22:08,716 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 00:22:08,716 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 00:22:08,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 00:22:08,717 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 00:22:08,717 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 00:22:08,717 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 00:22:08,717 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 00:22:08,717 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 00:22:08,717 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 00:22:08,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 00:22:08,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 00:22:08,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 00:22:08,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 00:22:08,718 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 00:22:08,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 00:22:08,719 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 00:22:08,719 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 00:22:08,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 00:22:08,719 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 00:22:08,719 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 00:22:08,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 00:22:08,720 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 00:22:08,720 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 00:22:08,720 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 00:22:08,720 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 00:22:08,720 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 00:22:08,721 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 00:22:08,721 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 00:22:08,721 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 00:22:08,721 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 00:22:08,721 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 00:22:08,721 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 00:22:08,721 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 00:22:08,722 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 00:22:08,722 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 00:22:08,722 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 00:22:08,722 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 00:22:08,722 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-22 00:22:08,722 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 00:22:08,723 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 00:22:08,723 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 00:22:08,723 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-22 00:22:08,723 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 00:22:08,723 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 00:22:08,723 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 00:22:08,724 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 00:22:08,724 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 00:22:08,724 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 00:22:08,724 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 00:22:08,724 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 00:22:08,724 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 00:22:08,725 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 00:22:08,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 00:22:08,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 00:22:08,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 00:22:09,746 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 00:22:09,747 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 00:22:09,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:22:09 BoogieIcfgContainer [2020-08-22 00:22:09,753 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 00:22:09,754 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 00:22:09,754 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 00:22:09,757 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 00:22:09,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 12:22:07" (1/3) ... [2020-08-22 00:22:09,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a256ef5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:22:09, skipping insertion in model container [2020-08-22 00:22:09,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:22:08" (2/3) ... [2020-08-22 00:22:09,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a256ef5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:22:09, skipping insertion in model container [2020-08-22 00:22:09,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:22:09" (3/3) ... [2020-08-22 00:22:09,761 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product44.cil.c [2020-08-22 00:22:09,772 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 00:22:09,780 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 00:22:09,794 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 00:22:09,819 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 00:22:09,819 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 00:22:09,819 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 00:22:09,819 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 00:22:09,820 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 00:22:09,820 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 00:22:09,820 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 00:22:09,820 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 00:22:09,842 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states. [2020-08-22 00:22:09,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 00:22:09,852 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:22:09,853 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] [2020-08-22 00:22:09,854 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:22:09,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:22:09,860 INFO L82 PathProgramCache]: Analyzing trace with hash -325582978, now seen corresponding path program 1 times [2020-08-22 00:22:09,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:22:09,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519621522] [2020-08-22 00:22:09,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:22:10,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:10,539 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:22:10,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:22:10,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:10,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:22:10,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:10,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:22:10,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:10,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:22:10,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:10,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:22:10,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:10,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 00:22:10,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:10,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 00:22:10,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:10,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:22:10,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519621522] [2020-08-22 00:22:10,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:22:10,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 00:22:10,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525582923] [2020-08-22 00:22:10,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 00:22:10,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:22:10,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 00:22:10,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 00:22:10,702 INFO L87 Difference]: Start difference. First operand 173 states. Second operand 3 states. [2020-08-22 00:22:11,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:22:11,896 INFO L93 Difference]: Finished difference Result 304 states and 394 transitions. [2020-08-22 00:22:11,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 00:22:11,898 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-22 00:22:11,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:22:11,913 INFO L225 Difference]: With dead ends: 304 [2020-08-22 00:22:11,913 INFO L226 Difference]: Without dead ends: 165 [2020-08-22 00:22:11,919 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 [2020-08-22 00:22:11,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-08-22 00:22:12,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 130. [2020-08-22 00:22:12,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-08-22 00:22:12,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 151 transitions. [2020-08-22 00:22:12,029 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 151 transitions. Word has length 46 [2020-08-22 00:22:12,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:22:12,029 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 151 transitions. [2020-08-22 00:22:12,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 00:22:12,030 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 151 transitions. [2020-08-22 00:22:12,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-22 00:22:12,033 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:22:12,033 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] [2020-08-22 00:22:12,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 00:22:12,034 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:22:12,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:22:12,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1889235753, now seen corresponding path program 1 times [2020-08-22 00:22:12,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:22:12,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1653374812] [2020-08-22 00:22:12,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:22:12,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:12,391 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:22:12,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:22:12,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:12,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:22:12,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:12,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:22:12,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:12,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:22:12,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:12,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:22:12,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:12,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 00:22:12,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:12,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 00:22:12,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:12,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:22:12,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1653374812] [2020-08-22 00:22:12,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:22:12,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 00:22:12,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248291013] [2020-08-22 00:22:12,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 00:22:12,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:22:12,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 00:22:12,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 00:22:12,434 INFO L87 Difference]: Start difference. First operand 130 states and 151 transitions. Second operand 4 states. [2020-08-22 00:22:12,842 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:22:13,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:22:13,678 INFO L93 Difference]: Finished difference Result 224 states and 271 transitions. [2020-08-22 00:22:13,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 00:22:13,679 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-22 00:22:13,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:22:13,683 INFO L225 Difference]: With dead ends: 224 [2020-08-22 00:22:13,683 INFO L226 Difference]: Without dead ends: 149 [2020-08-22 00:22:13,685 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 [2020-08-22 00:22:13,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-22 00:22:13,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 121. [2020-08-22 00:22:13,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-08-22 00:22:13,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 139 transitions. [2020-08-22 00:22:13,722 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 139 transitions. Word has length 47 [2020-08-22 00:22:13,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:22:13,723 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 139 transitions. [2020-08-22 00:22:13,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 00:22:13,723 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 139 transitions. [2020-08-22 00:22:13,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 00:22:13,725 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:22:13,725 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:22:13,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 00:22:13,726 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:22:13,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:22:13,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1400660330, now seen corresponding path program 1 times [2020-08-22 00:22:13,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:22:13,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1266536805] [2020-08-22 00:22:13,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:22:13,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:14,020 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:22:14,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:22:14,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:14,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:22:14,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:14,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:22:14,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:14,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:22:14,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:14,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:22:14,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:14,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 00:22:14,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:14,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 00:22:14,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:14,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:22:14,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1266536805] [2020-08-22 00:22:14,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:22:14,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 00:22:14,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096610814] [2020-08-22 00:22:14,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 00:22:14,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:22:14,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 00:22:14,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 00:22:14,143 INFO L87 Difference]: Start difference. First operand 121 states and 139 transitions. Second operand 8 states. [2020-08-22 00:22:14,496 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:22:14,800 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:22:15,062 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:22:15,331 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:22:16,060 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:22:17,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:22:17,750 INFO L93 Difference]: Finished difference Result 418 states and 512 transitions. [2020-08-22 00:22:17,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 00:22:17,751 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-22 00:22:17,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:22:17,757 INFO L225 Difference]: With dead ends: 418 [2020-08-22 00:22:17,757 INFO L226 Difference]: Without dead ends: 321 [2020-08-22 00:22:17,765 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 [2020-08-22 00:22:17,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-08-22 00:22:17,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 244. [2020-08-22 00:22:17,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-08-22 00:22:17,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 290 transitions. [2020-08-22 00:22:17,832 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 290 transitions. Word has length 52 [2020-08-22 00:22:17,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:22:17,832 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 290 transitions. [2020-08-22 00:22:17,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 00:22:17,833 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 290 transitions. [2020-08-22 00:22:17,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 00:22:17,835 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:22:17,835 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] [2020-08-22 00:22:17,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 00:22:17,836 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:22:17,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:22:17,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1567525845, now seen corresponding path program 1 times [2020-08-22 00:22:17,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:22:17,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1410012023] [2020-08-22 00:22:17,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:22:17,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:18,132 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:22:18,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:22:18,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:18,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:22:18,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:18,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:22:18,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:18,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:22:18,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:18,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:22:18,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:18,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 00:22:18,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:18,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 00:22:18,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:18,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 00:22:18,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:18,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:22:18,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1410012023] [2020-08-22 00:22:18,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:22:18,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 00:22:18,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705530216] [2020-08-22 00:22:18,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 00:22:18,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:22:18,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 00:22:18,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 00:22:18,236 INFO L87 Difference]: Start difference. First operand 244 states and 290 transitions. Second operand 8 states. [2020-08-22 00:22:18,624 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:22:19,672 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:22:19,994 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:22:20,290 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:22:20,559 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:22:20,916 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:22:21,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:22:21,949 INFO L93 Difference]: Finished difference Result 793 states and 1017 transitions. [2020-08-22 00:22:21,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 00:22:21,950 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-22 00:22:21,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:22:21,957 INFO L225 Difference]: With dead ends: 793 [2020-08-22 00:22:21,957 INFO L226 Difference]: Without dead ends: 573 [2020-08-22 00:22:21,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-22 00:22:21,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2020-08-22 00:22:22,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 443. [2020-08-22 00:22:22,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2020-08-22 00:22:22,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 530 transitions. [2020-08-22 00:22:22,059 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 530 transitions. Word has length 57 [2020-08-22 00:22:22,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:22:22,059 INFO L479 AbstractCegarLoop]: Abstraction has 443 states and 530 transitions. [2020-08-22 00:22:22,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 00:22:22,060 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 530 transitions. [2020-08-22 00:22:22,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-22 00:22:22,063 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:22:22,063 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] [2020-08-22 00:22:22,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 00:22:22,063 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:22:22,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:22:22,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1743298223, now seen corresponding path program 1 times [2020-08-22 00:22:22,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:22:22,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091130841] [2020-08-22 00:22:22,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:22:22,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:22,343 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:22:22,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:22:22,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:22,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:22:22,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:22,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:22:22,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:22,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:22:22,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:22,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:22:22,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:22,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 00:22:22,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:22,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 00:22:22,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:22,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 00:22:22,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:22,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 00:22:22,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:22,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:22:22,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091130841] [2020-08-22 00:22:22,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:22:22,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 00:22:22,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137431725] [2020-08-22 00:22:22,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 00:22:22,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:22:22,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 00:22:22,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 00:22:22,445 INFO L87 Difference]: Start difference. First operand 443 states and 530 transitions. Second operand 9 states. [2020-08-22 00:22:22,840 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:22:23,888 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:22:24,156 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:22:24,423 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:22:25,055 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:22:25,370 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:22:26,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:22:26,228 INFO L93 Difference]: Finished difference Result 1254 states and 1644 transitions. [2020-08-22 00:22:26,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 00:22:26,229 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-08-22 00:22:26,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:22:26,237 INFO L225 Difference]: With dead ends: 1254 [2020-08-22 00:22:26,237 INFO L226 Difference]: Without dead ends: 835 [2020-08-22 00:22:26,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-22 00:22:26,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2020-08-22 00:22:26,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 671. [2020-08-22 00:22:26,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 671 states. [2020-08-22 00:22:26,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 815 transitions. [2020-08-22 00:22:26,377 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 815 transitions. Word has length 61 [2020-08-22 00:22:26,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:22:26,377 INFO L479 AbstractCegarLoop]: Abstraction has 671 states and 815 transitions. [2020-08-22 00:22:26,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 00:22:26,377 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 815 transitions. [2020-08-22 00:22:26,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-22 00:22:26,381 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:22:26,381 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:22:26,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 00:22:26,382 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:22:26,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:22:26,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1614775342, now seen corresponding path program 1 times [2020-08-22 00:22:26,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:22:26,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [176991102] [2020-08-22 00:22:26,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:22:26,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:26,654 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:22:26,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:22:26,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:26,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:22:26,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:26,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:22:26,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:26,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:22:26,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:26,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:22:26,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:26,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 00:22:26,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:26,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 00:22:26,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:26,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:22:26,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:26,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:22:26,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:26,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:22:26,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:26,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:22:26,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:26,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:22:26,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:26,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:22:26,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:26,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 00:22:26,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:26,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 00:22:26,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:26,834 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 00:22:26,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [176991102] [2020-08-22 00:22:26,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:22:26,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 00:22:26,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053168319] [2020-08-22 00:22:26,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 00:22:26,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:22:26,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 00:22:26,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 00:22:26,837 INFO L87 Difference]: Start difference. First operand 671 states and 815 transitions. Second operand 9 states. [2020-08-22 00:22:27,263 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:22:28,243 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:22:28,490 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:22:28,776 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:22:29,043 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:22:30,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:22:30,933 INFO L93 Difference]: Finished difference Result 2315 states and 3234 transitions. [2020-08-22 00:22:30,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 00:22:30,934 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-08-22 00:22:30,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:22:30,954 INFO L225 Difference]: With dead ends: 2315 [2020-08-22 00:22:30,954 INFO L226 Difference]: Without dead ends: 1668 [2020-08-22 00:22:30,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-22 00:22:30,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2020-08-22 00:22:31,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1271. [2020-08-22 00:22:31,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1271 states. [2020-08-22 00:22:31,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 1540 transitions. [2020-08-22 00:22:31,251 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 1540 transitions. Word has length 94 [2020-08-22 00:22:31,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:22:31,252 INFO L479 AbstractCegarLoop]: Abstraction has 1271 states and 1540 transitions. [2020-08-22 00:22:31,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 00:22:31,252 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 1540 transitions. [2020-08-22 00:22:31,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-22 00:22:31,260 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:22:31,260 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:22:31,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 00:22:31,261 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:22:31,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:22:31,261 INFO L82 PathProgramCache]: Analyzing trace with hash 709252497, now seen corresponding path program 1 times [2020-08-22 00:22:31,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:22:31,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [443971071] [2020-08-22 00:22:31,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:22:31,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:31,532 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:22:31,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:22:31,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:31,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:22:31,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:31,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:22:31,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:31,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:22:31,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:31,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:22:31,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:31,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 00:22:31,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:31,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 00:22:31,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:31,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:22:31,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:31,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:22:31,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:31,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:22:31,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:31,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:22:31,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:31,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:22:31,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:31,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:22:31,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:31,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 00:22:31,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:31,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 00:22:31,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:31,673 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 00:22:31,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [443971071] [2020-08-22 00:22:31,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:22:31,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 00:22:31,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500312614] [2020-08-22 00:22:31,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 00:22:31,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:22:31,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 00:22:31,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 00:22:31,682 INFO L87 Difference]: Start difference. First operand 1271 states and 1540 transitions. Second operand 9 states. [2020-08-22 00:22:32,959 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:22:33,282 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:22:33,594 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:22:33,821 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:22:35,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:22:35,141 INFO L93 Difference]: Finished difference Result 2944 states and 3942 transitions. [2020-08-22 00:22:35,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 00:22:35,142 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-08-22 00:22:35,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:22:35,158 INFO L225 Difference]: With dead ends: 2944 [2020-08-22 00:22:35,158 INFO L226 Difference]: Without dead ends: 1697 [2020-08-22 00:22:35,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-22 00:22:35,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1697 states. [2020-08-22 00:22:35,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1697 to 1311. [2020-08-22 00:22:35,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1311 states. [2020-08-22 00:22:35,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1311 states to 1311 states and 1580 transitions. [2020-08-22 00:22:35,451 INFO L78 Accepts]: Start accepts. Automaton has 1311 states and 1580 transitions. Word has length 94 [2020-08-22 00:22:35,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:22:35,451 INFO L479 AbstractCegarLoop]: Abstraction has 1311 states and 1580 transitions. [2020-08-22 00:22:35,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 00:22:35,451 INFO L276 IsEmpty]: Start isEmpty. Operand 1311 states and 1580 transitions. [2020-08-22 00:22:35,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-22 00:22:35,455 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:22:35,456 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:22:35,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 00:22:35,456 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:22:35,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:22:35,456 INFO L82 PathProgramCache]: Analyzing trace with hash -188140781, now seen corresponding path program 1 times [2020-08-22 00:22:35,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:22:35,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2079147757] [2020-08-22 00:22:35,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:22:35,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:35,731 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:22:35,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:22:35,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:35,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:22:35,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:35,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:22:35,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:35,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:22:35,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:35,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:22:35,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:35,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 00:22:35,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:35,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 00:22:35,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:35,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:22:35,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:35,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:22:35,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:35,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:22:35,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:35,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:22:35,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:35,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:22:35,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:35,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:22:35,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:35,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 00:22:35,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:35,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 00:22:35,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:35,875 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 00:22:35,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2079147757] [2020-08-22 00:22:35,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:22:35,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 00:22:35,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893839722] [2020-08-22 00:22:35,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 00:22:35,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:22:35,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 00:22:35,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-22 00:22:35,878 INFO L87 Difference]: Start difference. First operand 1311 states and 1580 transitions. Second operand 11 states. [2020-08-22 00:22:36,470 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:22:36,696 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:22:36,928 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:22:37,629 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:22:37,879 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:22:38,113 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:22:39,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:22:39,278 INFO L93 Difference]: Finished difference Result 2566 states and 3327 transitions. [2020-08-22 00:22:39,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 00:22:39,279 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 94 [2020-08-22 00:22:39,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:22:39,289 INFO L225 Difference]: With dead ends: 2566 [2020-08-22 00:22:39,289 INFO L226 Difference]: Without dead ends: 1279 [2020-08-22 00:22:39,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 00:22:39,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2020-08-22 00:22:39,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1029. [2020-08-22 00:22:39,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1029 states. [2020-08-22 00:22:39,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 1212 transitions. [2020-08-22 00:22:39,501 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 1212 transitions. Word has length 94 [2020-08-22 00:22:39,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:22:39,502 INFO L479 AbstractCegarLoop]: Abstraction has 1029 states and 1212 transitions. [2020-08-22 00:22:39,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 00:22:39,502 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 1212 transitions. [2020-08-22 00:22:39,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-22 00:22:39,505 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:22:39,506 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:22:39,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 00:22:39,506 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:22:39,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:22:39,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1347463022, now seen corresponding path program 1 times [2020-08-22 00:22:39,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:22:39,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240193854] [2020-08-22 00:22:39,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:22:39,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:39,786 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:22:39,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:22:39,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:39,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:22:39,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:39,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:22:39,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:39,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:22:39,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:39,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:22:39,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:39,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 00:22:39,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:39,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 00:22:39,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:39,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 00:22:39,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:39,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:22:39,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:39,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:22:39,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:39,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:22:39,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:39,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:22:39,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:39,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:22:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:40,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:22:40,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:40,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 00:22:40,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:40,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 00:22:40,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:22:40,025 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 00:22:40,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [240193854] [2020-08-22 00:22:40,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:22:40,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-22 00:22:40,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538074217] [2020-08-22 00:22:40,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-22 00:22:40,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:22:40,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-22 00:22:40,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-08-22 00:22:40,027 INFO L87 Difference]: Start difference. First operand 1029 states and 1212 transitions. Second operand 17 states. [2020-08-22 00:22:40,482 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:22:40,780 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:22:41,021 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:22:41,272 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:22:41,886 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:22:42,541 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:22:42,967 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:22:44,027 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:22:44,327 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:22:44,654 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:22:44,895 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:22:45,463 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-08-22 00:22:45,988 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-08-22 00:22:47,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:22:47,350 INFO L93 Difference]: Finished difference Result 2268 states and 2829 transitions. [2020-08-22 00:22:47,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-22 00:22:47,350 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 98 [2020-08-22 00:22:47,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:22:47,359 INFO L225 Difference]: With dead ends: 2268 [2020-08-22 00:22:47,359 INFO L226 Difference]: Without dead ends: 1263 [2020-08-22 00:22:47,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=328, Invalid=1312, Unknown=0, NotChecked=0, Total=1640 [2020-08-22 00:22:47,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2020-08-22 00:22:47,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 1007. [2020-08-22 00:22:47,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1007 states. [2020-08-22 00:22:47,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1007 states to 1007 states and 1163 transitions. [2020-08-22 00:22:47,530 INFO L78 Accepts]: Start accepts. Automaton has 1007 states and 1163 transitions. Word has length 98 [2020-08-22 00:22:47,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:22:47,530 INFO L479 AbstractCegarLoop]: Abstraction has 1007 states and 1163 transitions. [2020-08-22 00:22:47,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-22 00:22:47,531 INFO L276 IsEmpty]: Start isEmpty. Operand 1007 states and 1163 transitions. [2020-08-22 00:22:47,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-22 00:22:47,535 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:22:47,535 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:22:47,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 00:22:47,536 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:22:47,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:22:47,536 INFO L82 PathProgramCache]: Analyzing trace with hash 555633972, now seen corresponding path program 1 times [2020-08-22 00:22:47,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:22:47,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [967079580] [2020-08-22 00:22:47,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:22:47,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 00:22:47,605 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 00:22:47,605 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 00:22:47,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 00:22:47,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 12:22:47 BoogieIcfgContainer [2020-08-22 00:22:47,639 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 00:22:47,641 INFO L168 Benchmark]: Toolchain (without parser) took 39741.55 ms. Allocated memory was 138.4 MB in the beginning and 759.7 MB in the end (delta: 621.3 MB). Free memory was 100.6 MB in the beginning and 374.2 MB in the end (delta: -273.5 MB). Peak memory consumption was 347.8 MB. Max. memory is 7.1 GB. [2020-08-22 00:22:47,642 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 138.4 MB. Free memory was 120.0 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 00:22:47,643 INFO L168 Benchmark]: CACSL2BoogieTranslator took 637.38 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 100.4 MB in the beginning and 165.9 MB in the end (delta: -65.5 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-08-22 00:22:47,643 INFO L168 Benchmark]: Boogie Preprocessor took 108.03 ms. Allocated memory is still 201.9 MB. Free memory was 165.9 MB in the beginning and 161.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-08-22 00:22:47,644 INFO L168 Benchmark]: RCFGBuilder took 1105.92 ms. Allocated memory was 201.9 MB in the beginning and 232.8 MB in the end (delta: 30.9 MB). Free memory was 161.8 MB in the beginning and 192.1 MB in the end (delta: -30.4 MB). Peak memory consumption was 82.0 MB. Max. memory is 7.1 GB. [2020-08-22 00:22:47,645 INFO L168 Benchmark]: TraceAbstraction took 37885.33 ms. Allocated memory was 232.8 MB in the beginning and 759.7 MB in the end (delta: 526.9 MB). Free memory was 190.7 MB in the beginning and 374.2 MB in the end (delta: -183.5 MB). Peak memory consumption was 343.5 MB. Max. memory is 7.1 GB. [2020-08-22 00:22:47,648 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 138.4 MB. Free memory was 120.0 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 637.38 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 100.4 MB in the beginning and 165.9 MB in the end (delta: -65.5 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 108.03 ms. Allocated memory is still 201.9 MB. Free memory was 165.9 MB in the beginning and 161.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1105.92 ms. Allocated memory was 201.9 MB in the beginning and 232.8 MB in the end (delta: 30.9 MB). Free memory was 161.8 MB in the beginning and 192.1 MB in the end (delta: -30.4 MB). Peak memory consumption was 82.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 37885.33 ms. Allocated memory was 232.8 MB in the beginning and 759.7 MB in the end (delta: 526.9 MB). Free memory was 190.7 MB in the beginning and 374.2 MB in the end (delta: -183.5 MB). Peak memory consumption was 343.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L218] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L498] int pumpRunning = 0; [L499] int systemActive = 1; [L693] int waterLevel = 1; [L694] int methaneLevelCritical = 0; [L851] int cleanupTimeShifts = 4; [L924] int retValue_acc ; [L925] int tmp ; [L929] FCALL select_helpers() [L930] FCALL select_features() [L931] CALL, EXPR valid_product() [L842] int retValue_acc ; [L845] retValue_acc = 1 [L846] return (retValue_acc); [L931] RET, EXPR valid_product() [L931] tmp = valid_product() [L933] COND TRUE \read(tmp) [L935] FCALL setup() [L936] CALL runTest() [L918] CALL test() [L422] int splverifierCounter ; [L423] int tmp ; [L424] int tmp___0 ; [L425] int tmp___1 ; [L426] int tmp___2 ; [L429] splverifierCounter = 0 [L431] COND TRUE 1 [L433] COND TRUE splverifierCounter < 4 [L439] tmp = __VERIFIER_nondet_int() [L441] COND TRUE \read(tmp) [L443] CALL waterRise() [L711] COND TRUE waterLevel < 2 [L712] waterLevel = waterLevel + 1 [L443] RET waterRise() [L449] tmp___0 = __VERIFIER_nondet_int() [L451] COND FALSE !(\read(tmp___0)) [L459] tmp___2 = __VERIFIER_nondet_int() [L461] COND FALSE !(\read(tmp___2)) [L467] tmp___1 = __VERIFIER_nondet_int() [L469] COND FALSE !(\read(tmp___1)) [L478] CALL timeShift() [L506] COND FALSE !(\read(pumpRunning)) [L513] COND TRUE \read(systemActive) [L515] CALL processEnvironment() [L535] int tmp ; [L538] COND TRUE ! pumpRunning [L540] CALL, EXPR isHighWaterLevel() [L650] int retValue_acc ; [L651] int tmp ; [L652] int tmp___0 ; [L656] CALL, EXPR isHighWaterSensorDry() [L773] int retValue_acc ; [L776] COND FALSE !(waterLevel < 2) [L780] retValue_acc = 0 [L781] return (retValue_acc); [L656] RET, EXPR isHighWaterSensorDry() [L656] tmp = isHighWaterSensorDry() [L658] COND FALSE !(\read(tmp)) [L661] tmp___0 = 1 [L663] retValue_acc = tmp___0 [L664] return (retValue_acc); [L540] RET, EXPR isHighWaterLevel() [L540] tmp = isHighWaterLevel() [L542] COND TRUE \read(tmp) [L544] CALL activatePump() [L569] int tmp ; [L573] CALL, EXPR isMethaneAlarm() [L594] int retValue_acc ; [L598] CALL, EXPR isMethaneLevelCritical() [L732] int retValue_acc ; [L735] retValue_acc = methaneLevelCritical [L736] return (retValue_acc); [L598] RET, EXPR isMethaneLevelCritical() [L598] retValue_acc = isMethaneLevelCritical() [L600] return (retValue_acc); [L573] RET, EXPR isMethaneAlarm() [L573] tmp = isMethaneAlarm() [L575] COND FALSE !(\read(tmp)) [L579] CALL activatePump__wrappee__highWaterSensor() [L563] pumpRunning = 1 [L579] RET activatePump__wrappee__highWaterSensor() [L544] RET activatePump() [L515] RET processEnvironment() [L521] CALL __utac_acc__Specification1_spec__1() [L788] int tmp ; [L789] int tmp___0 ; [L793] CALL, EXPR isMethaneLevelCritical() [L732] int retValue_acc ; [L735] retValue_acc = methaneLevelCritical [L736] return (retValue_acc); [L793] RET, EXPR isMethaneLevelCritical() [L793] tmp = isMethaneLevelCritical() [L795] COND FALSE !(\read(tmp)) [L521] RET __utac_acc__Specification1_spec__1() [L478] RET timeShift() [L431] COND TRUE 1 [L433] COND TRUE splverifierCounter < 4 [L439] tmp = __VERIFIER_nondet_int() [L441] COND FALSE !(\read(tmp)) [L449] tmp___0 = __VERIFIER_nondet_int() [L451] COND TRUE \read(tmp___0) [L453] CALL changeMethaneLevel() [L723] COND FALSE !(\read(methaneLevelCritical)) [L726] methaneLevelCritical = 1 [L453] RET changeMethaneLevel() [L459] tmp___2 = __VERIFIER_nondet_int() [L461] COND FALSE !(\read(tmp___2)) [L467] tmp___1 = __VERIFIER_nondet_int() [L469] COND FALSE !(\read(tmp___1)) [L478] CALL timeShift() [L506] COND TRUE \read(pumpRunning) [L508] CALL lowerWaterLevel() [L699] COND TRUE waterLevel > 0 [L700] waterLevel = waterLevel - 1 [L508] RET lowerWaterLevel() [L513] COND TRUE \read(systemActive) [L515] CALL processEnvironment() [L535] int tmp ; [L538] COND FALSE !(! pumpRunning) [L553] FCALL processEnvironment__wrappee__base() [L515] RET processEnvironment() [L521] CALL __utac_acc__Specification1_spec__1() [L788] int tmp ; [L789] int tmp___0 ; [L793] CALL, EXPR isMethaneLevelCritical() [L732] int retValue_acc ; [L735] retValue_acc = methaneLevelCritical [L736] return (retValue_acc); [L793] RET, EXPR isMethaneLevelCritical() [L793] tmp = isMethaneLevelCritical() [L795] COND TRUE \read(tmp) [L797] CALL, EXPR isPumpRunning() [L605] int retValue_acc ; [L608] retValue_acc = pumpRunning [L609] return (retValue_acc); [L797] RET, EXPR isPumpRunning() [L797] tmp___0 = isPumpRunning() [L799] COND TRUE \read(tmp___0) [L801] CALL __automaton_fail() [L44] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 232 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 37.7s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 31.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1086 SDtfs, 2271 SDslu, 1554 SDs, 0 SdLazy, 7793 SolverSat, 1524 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 358 GetRequests, 229 SyntacticMatches, 1 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 13.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1311occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 1723 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 777 NumberOfCodeBlocks, 777 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 634 ConstructedInterpolants, 0 QuantifiedInterpolants, 196729 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 10/12 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...