/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product50.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 23:17:56,473 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 23:17:56,476 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 23:17:56,516 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 23:17:56,516 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 23:17:56,525 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 23:17:56,527 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 23:17:56,531 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 23:17:56,534 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 23:17:56,538 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 23:17:56,539 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 23:17:56,540 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 23:17:56,540 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 23:17:56,544 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 23:17:56,547 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 23:17:56,549 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 23:17:56,550 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 23:17:56,551 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 23:17:56,552 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 23:17:56,563 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 23:17:56,566 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 23:17:56,566 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 23:17:56,567 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 23:17:56,568 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 23:17:56,581 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 23:17:56,581 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 23:17:56,581 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 23:17:56,582 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 23:17:56,582 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 23:17:56,587 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 23:17:56,587 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 23:17:56,588 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 23:17:56,588 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 23:17:56,591 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 23:17:56,592 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 23:17:56,592 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 23:17:56,596 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 23:17:56,597 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 23:17:56,597 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 23:17:56,598 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 23:17:56,598 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 23:17:56,602 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 23:17:56,639 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 23:17:56,639 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 23:17:56,642 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 23:17:56,642 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 23:17:56,642 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 23:17:56,642 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 23:17:56,643 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 23:17:56,643 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 23:17:56,643 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 23:17:56,643 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 23:17:56,644 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 23:17:56,645 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 23:17:56,645 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 23:17:56,645 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 23:17:56,646 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 23:17:56,646 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 23:17:56,646 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 23:17:56,646 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 23:17:56,646 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 23:17:56,647 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 23:17:56,647 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 23:17:56,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 23:17:56,647 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 23:17:56,647 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 23:17:56,648 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 23:17:56,648 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 23:17:56,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 23:17:56,648 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 23:17:56,648 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 23:17:56,649 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; [2020-08-18 23:17:56,953 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 23:17:56,966 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 23:17:56,970 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 23:17:56,971 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 23:17:56,972 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 23:17:56,973 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product50.cil.c [2020-08-18 23:17:57,035 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1be08186/c74b7c93176b4c219efc91848df7700b/FLAG6f38d28eb [2020-08-18 23:17:57,590 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 23:17:57,590 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product50.cil.c [2020-08-18 23:17:57,601 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1be08186/c74b7c93176b4c219efc91848df7700b/FLAG6f38d28eb [2020-08-18 23:17:57,859 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1be08186/c74b7c93176b4c219efc91848df7700b [2020-08-18 23:17:57,870 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 23:17:57,872 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 23:17:57,876 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 23:17:57,876 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 23:17:57,879 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 23:17:57,881 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:17:57" (1/1) ... [2020-08-18 23:17:57,884 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e6cae7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:57, skipping insertion in model container [2020-08-18 23:17:57,884 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:17:57" (1/1) ... [2020-08-18 23:17:57,892 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 23:17:57,951 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 23:17:58,296 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:17:58,318 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 23:17:58,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:17:58,564 INFO L208 MainTranslator]: Completed translation [2020-08-18 23:17:58,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:58 WrapperNode [2020-08-18 23:17:58,565 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 23:17:58,566 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 23:17:58,566 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 23:17:58,566 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 23:17:58,576 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:58" (1/1) ... [2020-08-18 23:17:58,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:58" (1/1) ... [2020-08-18 23:17:58,597 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:58" (1/1) ... [2020-08-18 23:17:58,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:58" (1/1) ... [2020-08-18 23:17:58,630 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:58" (1/1) ... [2020-08-18 23:17:58,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:58" (1/1) ... [2020-08-18 23:17:58,647 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:58" (1/1) ... [2020-08-18 23:17:58,655 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 23:17:58,656 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 23:17:58,656 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 23:17:58,656 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 23:17:58,657 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:58" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 23:17:58,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 23:17:58,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 23:17:58,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 23:17:58,724 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-18 23:17:58,724 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 23:17:58,724 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 23:17:58,724 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 23:17:58,724 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 23:17:58,725 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 23:17:58,726 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 23:17:58,726 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 23:17:58,726 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 23:17:58,726 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 23:17:58,726 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 23:17:58,726 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 23:17:58,727 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 23:17:58,728 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 23:17:58,728 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 23:17:58,728 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 23:17:58,728 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 23:17:58,728 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 23:17:58,728 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 23:17:58,728 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 23:17:58,729 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 23:17:58,729 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 23:17:58,730 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 23:17:58,731 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 23:17:58,731 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 23:17:58,731 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 23:17:58,731 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 23:17:58,731 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 23:17:58,731 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 23:17:58,732 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 23:17:58,732 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 23:17:58,732 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 23:17:58,732 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 23:17:58,732 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 23:17:58,732 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 23:17:58,732 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 23:17:58,733 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 23:17:58,733 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 23:17:58,733 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 23:17:58,733 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 23:17:58,733 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 23:17:58,733 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 23:17:58,734 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 23:17:58,734 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 23:17:58,734 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-18 23:17:58,734 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 23:17:58,734 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 23:17:58,734 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 23:17:58,734 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 23:17:58,735 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 23:17:58,735 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 23:17:58,735 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 23:17:58,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 23:17:58,736 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 23:17:58,736 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 23:17:58,736 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 23:17:58,736 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 23:17:58,736 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 23:17:58,737 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 23:17:58,737 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 23:17:58,737 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 23:17:58,737 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 23:17:58,738 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 23:17:58,738 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 23:17:58,738 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 23:17:58,739 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 23:17:58,739 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 23:17:58,739 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 23:17:58,740 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 23:17:58,740 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 23:17:58,741 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 23:17:58,741 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 23:17:58,741 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 23:17:58,742 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 23:17:58,742 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 23:17:58,743 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 23:17:58,743 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 23:17:58,743 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 23:17:58,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 23:17:58,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 23:17:58,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 23:17:58,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 23:17:58,745 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 23:17:58,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 23:17:58,745 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 23:17:58,745 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 23:17:58,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 23:17:58,746 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 23:17:58,746 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 23:17:58,746 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 23:17:58,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 23:17:58,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 23:17:58,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 23:17:59,790 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 23:17:59,791 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 23:17:59,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:17:59 BoogieIcfgContainer [2020-08-18 23:17:59,796 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 23:17:59,798 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 23:17:59,798 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 23:17:59,801 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 23:17:59,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:17:57" (1/3) ... [2020-08-18 23:17:59,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5afb5ec6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:17:59, skipping insertion in model container [2020-08-18 23:17:59,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:58" (2/3) ... [2020-08-18 23:17:59,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5afb5ec6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:17:59, skipping insertion in model container [2020-08-18 23:17:59,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:17:59" (3/3) ... [2020-08-18 23:17:59,805 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product50.cil.c [2020-08-18 23:17:59,815 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 23:17:59,824 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 23:17:59,838 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 23:17:59,865 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 23:17:59,865 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 23:17:59,865 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 23:17:59,866 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 23:17:59,866 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 23:17:59,866 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 23:17:59,866 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 23:17:59,866 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 23:17:59,890 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states. [2020-08-18 23:17:59,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 23:17:59,901 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:17:59,902 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:17:59,902 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:17:59,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:17:59,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1040081704, now seen corresponding path program 1 times [2020-08-18 23:17:59,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:17:59,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717341123] [2020-08-18 23:17:59,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:18:00,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:00,633 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:18:00,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:18:00,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:00,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:18:00,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:00,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:18:00,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:00,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:18:00,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:00,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:18:00,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:00,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 23:18:00,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:00,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 23:18:00,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:00,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:18:00,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717341123] [2020-08-18 23:18:00,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:18:00,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 23:18:00,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211065528] [2020-08-18 23:18:00,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 23:18:00,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:18:00,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 23:18:00,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 23:18:00,745 INFO L87 Difference]: Start difference. First operand 178 states. Second operand 3 states. [2020-08-18 23:18:02,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:18:02,084 INFO L93 Difference]: Finished difference Result 306 states and 398 transitions. [2020-08-18 23:18:02,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 23:18:02,086 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 23:18:02,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:18:02,114 INFO L225 Difference]: With dead ends: 306 [2020-08-18 23:18:02,114 INFO L226 Difference]: Without dead ends: 165 [2020-08-18 23:18:02,121 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 23:18:02,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-08-18 23:18:02,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 132. [2020-08-18 23:18:02,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-08-18 23:18:02,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 154 transitions. [2020-08-18 23:18:02,276 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 154 transitions. Word has length 46 [2020-08-18 23:18:02,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:18:02,277 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 154 transitions. [2020-08-18 23:18:02,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 23:18:02,277 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 154 transitions. [2020-08-18 23:18:02,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 23:18:02,284 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:18:02,284 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:18:02,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 23:18:02,284 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:18:02,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:18:02,285 INFO L82 PathProgramCache]: Analyzing trace with hash -849158610, now seen corresponding path program 1 times [2020-08-18 23:18:02,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:18:02,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975420580] [2020-08-18 23:18:02,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:18:02,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:02,703 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:18:02,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:18:02,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:02,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:18:02,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:02,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:18:02,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:02,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:18:02,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:02,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:18:02,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:02,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 23:18:02,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:02,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 23:18:02,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:02,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:18:02,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975420580] [2020-08-18 23:18:02,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:18:02,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 23:18:02,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640519469] [2020-08-18 23:18:02,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 23:18:02,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:18:02,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 23:18:02,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 23:18:02,752 INFO L87 Difference]: Start difference. First operand 132 states and 154 transitions. Second operand 4 states. [2020-08-18 23:18:03,164 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:18:04,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:18:04,022 INFO L93 Difference]: Finished difference Result 235 states and 285 transitions. [2020-08-18 23:18:04,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 23:18:04,023 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 23:18:04,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:18:04,028 INFO L225 Difference]: With dead ends: 235 [2020-08-18 23:18:04,028 INFO L226 Difference]: Without dead ends: 149 [2020-08-18 23:18:04,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 23:18:04,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-18 23:18:04,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 123. [2020-08-18 23:18:04,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-18 23:18:04,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 142 transitions. [2020-08-18 23:18:04,079 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 142 transitions. Word has length 47 [2020-08-18 23:18:04,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:18:04,080 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 142 transitions. [2020-08-18 23:18:04,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 23:18:04,080 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 142 transitions. [2020-08-18 23:18:04,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 23:18:04,090 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:18:04,090 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] [2020-08-18 23:18:04,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 23:18:04,091 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:18:04,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:18:04,091 INFO L82 PathProgramCache]: Analyzing trace with hash 846018297, now seen corresponding path program 1 times [2020-08-18 23:18:04,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:18:04,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105158126] [2020-08-18 23:18:04,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:18:04,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:04,478 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:18:04,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:18:04,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:04,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:18:04,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:04,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:18:04,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:04,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:18:04,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:04,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:18:04,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:04,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 23:18:04,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:04,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 23:18:04,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:04,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:18:04,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [105158126] [2020-08-18 23:18:04,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:18:04,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 23:18:04,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093114978] [2020-08-18 23:18:04,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 23:18:04,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:18:04,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 23:18:04,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 23:18:04,612 INFO L87 Difference]: Start difference. First operand 123 states and 142 transitions. Second operand 8 states. [2020-08-18 23:18:04,985 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:18:05,308 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:18:05,588 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:18:05,821 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:18:07,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:18:07,010 INFO L93 Difference]: Finished difference Result 248 states and 303 transitions. [2020-08-18 23:18:07,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 23:18:07,012 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-18 23:18:07,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:18:07,014 INFO L225 Difference]: With dead ends: 248 [2020-08-18 23:18:07,015 INFO L226 Difference]: Without dead ends: 149 [2020-08-18 23:18:07,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 23:18:07,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-18 23:18:07,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 123. [2020-08-18 23:18:07,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-18 23:18:07,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 141 transitions. [2020-08-18 23:18:07,053 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 141 transitions. Word has length 52 [2020-08-18 23:18:07,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:18:07,053 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 141 transitions. [2020-08-18 23:18:07,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 23:18:07,053 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 141 transitions. [2020-08-18 23:18:07,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-18 23:18:07,055 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:18:07,055 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:18:07,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 23:18:07,055 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:18:07,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:18:07,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1478840967, now seen corresponding path program 1 times [2020-08-18 23:18:07,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:18:07,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [455121058] [2020-08-18 23:18:07,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:18:07,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:07,396 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:18:07,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:18:07,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:07,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:18:07,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:07,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:18:07,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:07,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:18:07,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:07,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:18:07,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:07,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 23:18:07,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:07,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:18:07,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:07,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:18:07,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:07,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 23:18:07,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:07,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-18 23:18:07,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:07,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:18:07,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [455121058] [2020-08-18 23:18:07,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:18:07,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 23:18:07,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50883076] [2020-08-18 23:18:07,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 23:18:07,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:18:07,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 23:18:07,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 23:18:07,539 INFO L87 Difference]: Start difference. First operand 123 states and 141 transitions. Second operand 6 states. [2020-08-18 23:18:07,956 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:18:09,032 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:18:09,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:18:09,694 INFO L93 Difference]: Finished difference Result 345 states and 425 transitions. [2020-08-18 23:18:09,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 23:18:09,695 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-08-18 23:18:09,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:18:09,703 INFO L225 Difference]: With dead ends: 345 [2020-08-18 23:18:09,703 INFO L226 Difference]: Without dead ends: 246 [2020-08-18 23:18:09,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-18 23:18:09,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-08-18 23:18:09,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 203. [2020-08-18 23:18:09,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-08-18 23:18:09,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 230 transitions. [2020-08-18 23:18:09,781 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 230 transitions. Word has length 65 [2020-08-18 23:18:09,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:18:09,782 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 230 transitions. [2020-08-18 23:18:09,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 23:18:09,783 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 230 transitions. [2020-08-18 23:18:09,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-18 23:18:09,785 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:18:09,786 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:18:09,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 23:18:09,786 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:18:09,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:18:09,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1284194314, now seen corresponding path program 1 times [2020-08-18 23:18:09,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:18:09,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [542738944] [2020-08-18 23:18:09,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:18:09,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:10,090 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:18:10,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:18:10,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:10,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:18:10,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:10,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:18:10,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:10,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:18:10,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:10,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:18:10,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:10,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 23:18:10,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:10,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:18:10,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:10,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:18:10,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:10,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:18:10,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:10,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:18:10,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:10,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 23:18:10,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:10,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 23:18:10,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:10,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:18:10,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [542738944] [2020-08-18 23:18:10,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:18:10,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 23:18:10,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308980476] [2020-08-18 23:18:10,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 23:18:10,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:18:10,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 23:18:10,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 23:18:10,196 INFO L87 Difference]: Start difference. First operand 203 states and 230 transitions. Second operand 8 states. [2020-08-18 23:18:10,623 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:18:11,762 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:18:12,025 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:18:12,270 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:18:12,501 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:18:12,773 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:18:13,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:18:13,801 INFO L93 Difference]: Finished difference Result 607 states and 746 transitions. [2020-08-18 23:18:13,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 23:18:13,803 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-08-18 23:18:13,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:18:13,808 INFO L225 Difference]: With dead ends: 607 [2020-08-18 23:18:13,808 INFO L226 Difference]: Without dead ends: 428 [2020-08-18 23:18:13,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-18 23:18:13,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2020-08-18 23:18:13,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 361. [2020-08-18 23:18:13,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2020-08-18 23:18:13,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 410 transitions. [2020-08-18 23:18:13,885 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 410 transitions. Word has length 79 [2020-08-18 23:18:13,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:18:13,886 INFO L479 AbstractCegarLoop]: Abstraction has 361 states and 410 transitions. [2020-08-18 23:18:13,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 23:18:13,886 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 410 transitions. [2020-08-18 23:18:13,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 23:18:13,887 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:18:13,888 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:18:13,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 23:18:13,888 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:18:13,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:18:13,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1377771002, now seen corresponding path program 1 times [2020-08-18 23:18:13,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:18:13,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277266726] [2020-08-18 23:18:13,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:18:13,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:14,148 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:18:14,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:18:14,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:14,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:18:14,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:14,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:18:14,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:14,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:18:14,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:14,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:18:14,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:14,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 23:18:14,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:14,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 23:18:14,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:14,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:18:14,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:14,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:18:14,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:14,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:18:14,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:14,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:18:14,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:14,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 23:18:14,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:14,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 23:18:14,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:14,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:18:14,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277266726] [2020-08-18 23:18:14,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:18:14,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 23:18:14,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214651613] [2020-08-18 23:18:14,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 23:18:14,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:18:14,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 23:18:14,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 23:18:14,272 INFO L87 Difference]: Start difference. First operand 361 states and 410 transitions. Second operand 9 states. [2020-08-18 23:18:14,644 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:18:15,687 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:18:15,908 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:18:16,198 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:18:16,434 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:18:16,666 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:18:17,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:18:17,661 INFO L93 Difference]: Finished difference Result 470 states and 590 transitions. [2020-08-18 23:18:17,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 23:18:17,661 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-18 23:18:17,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:18:17,666 INFO L225 Difference]: With dead ends: 470 [2020-08-18 23:18:17,666 INFO L226 Difference]: Without dead ends: 467 [2020-08-18 23:18:17,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 23:18:17,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2020-08-18 23:18:17,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 361. [2020-08-18 23:18:17,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2020-08-18 23:18:17,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 409 transitions. [2020-08-18 23:18:17,740 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 409 transitions. Word has length 83 [2020-08-18 23:18:17,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:18:17,741 INFO L479 AbstractCegarLoop]: Abstraction has 361 states and 409 transitions. [2020-08-18 23:18:17,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 23:18:17,741 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 409 transitions. [2020-08-18 23:18:17,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 23:18:17,742 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:18:17,742 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:18:17,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 23:18:17,743 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:18:17,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:18:17,743 INFO L82 PathProgramCache]: Analyzing trace with hash 453090503, now seen corresponding path program 1 times [2020-08-18 23:18:17,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:18:17,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1410647831] [2020-08-18 23:18:17,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:18:17,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:17,974 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:18:17,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:18:17,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:17,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:18:17,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:17,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:18:17,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:17,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:18:17,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:17,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:18:17,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:18,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 23:18:18,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:18,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 23:18:18,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:18,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:18:18,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:18,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:18:18,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:18,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:18:18,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:18,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:18:18,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:18,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 23:18:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:18,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 23:18:18,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:18,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:18:18,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1410647831] [2020-08-18 23:18:18,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:18:18,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 23:18:18,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903044769] [2020-08-18 23:18:18,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 23:18:18,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:18:18,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 23:18:18,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 23:18:18,102 INFO L87 Difference]: Start difference. First operand 361 states and 409 transitions. Second operand 9 states. [2020-08-18 23:18:18,977 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:18:19,249 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:18:19,501 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:18:19,745 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:18:20,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:18:20,707 INFO L93 Difference]: Finished difference Result 808 states and 990 transitions. [2020-08-18 23:18:20,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 23:18:20,708 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-08-18 23:18:20,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:18:20,713 INFO L225 Difference]: With dead ends: 808 [2020-08-18 23:18:20,713 INFO L226 Difference]: Without dead ends: 471 [2020-08-18 23:18:20,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 23:18:20,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-08-18 23:18:20,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 371. [2020-08-18 23:18:20,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2020-08-18 23:18:20,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 419 transitions. [2020-08-18 23:18:20,821 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 419 transitions. Word has length 84 [2020-08-18 23:18:20,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:18:20,821 INFO L479 AbstractCegarLoop]: Abstraction has 371 states and 419 transitions. [2020-08-18 23:18:20,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 23:18:20,821 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 419 transitions. [2020-08-18 23:18:20,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 23:18:20,823 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:18:20,823 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:18:20,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 23:18:20,823 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:18:20,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:18:20,824 INFO L82 PathProgramCache]: Analyzing trace with hash 475722757, now seen corresponding path program 1 times [2020-08-18 23:18:20,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:18:20,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1169529157] [2020-08-18 23:18:20,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:18:20,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:21,095 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:18:21,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:18:21,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:21,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:18:21,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:21,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:18:21,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:21,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:18:21,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:21,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:18:21,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:21,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 23:18:21,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:21,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 23:18:21,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:21,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:18:21,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:21,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:18:21,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:21,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:18:21,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:21,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:18:21,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:21,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 23:18:21,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:21,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 23:18:21,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:21,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:18:21,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1169529157] [2020-08-18 23:18:21,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:18:21,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 23:18:21,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885705977] [2020-08-18 23:18:21,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 23:18:21,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:18:21,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 23:18:21,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 23:18:21,247 INFO L87 Difference]: Start difference. First operand 371 states and 419 transitions. Second operand 11 states. [2020-08-18 23:18:22,037 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:18:22,286 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:18:22,518 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:18:23,167 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:18:23,403 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:18:23,629 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:18:24,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:18:24,777 INFO L93 Difference]: Finished difference Result 832 states and 1030 transitions. [2020-08-18 23:18:24,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 23:18:24,779 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 84 [2020-08-18 23:18:24,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:18:24,784 INFO L225 Difference]: With dead ends: 832 [2020-08-18 23:18:24,784 INFO L226 Difference]: Without dead ends: 485 [2020-08-18 23:18:24,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 23:18:24,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2020-08-18 23:18:24,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 379. [2020-08-18 23:18:24,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2020-08-18 23:18:24,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 427 transitions. [2020-08-18 23:18:24,868 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 427 transitions. Word has length 84 [2020-08-18 23:18:24,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:18:24,869 INFO L479 AbstractCegarLoop]: Abstraction has 379 states and 427 transitions. [2020-08-18 23:18:24,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 23:18:24,869 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 427 transitions. [2020-08-18 23:18:24,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 23:18:24,870 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:18:24,871 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:18:24,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 23:18:24,871 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:18:24,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:18:24,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1501214756, now seen corresponding path program 1 times [2020-08-18 23:18:24,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:18:24,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821184040] [2020-08-18 23:18:24,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:18:24,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:25,159 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:18:25,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:18:25,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:25,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:18:25,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:25,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:18:25,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:25,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:18:25,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:25,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:18:25,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:25,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 23:18:25,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:25,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 23:18:25,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:25,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:18:25,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:25,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:18:25,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:25,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:18:25,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:25,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:18:25,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:25,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 23:18:25,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:25,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 23:18:25,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:18:25,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:18:25,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821184040] [2020-08-18 23:18:25,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:18:25,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 23:18:25,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683743480] [2020-08-18 23:18:25,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 23:18:25,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:18:25,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 23:18:25,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 23:18:25,276 INFO L87 Difference]: Start difference. First operand 379 states and 427 transitions. Second operand 7 states. [2020-08-18 23:18:25,683 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:18:26,206 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:18:28,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:18:28,327 INFO L93 Difference]: Finished difference Result 1174 states and 1504 transitions. [2020-08-18 23:18:28,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 23:18:28,328 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 84 [2020-08-18 23:18:28,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:18:28,334 INFO L225 Difference]: With dead ends: 1174 [2020-08-18 23:18:28,335 INFO L226 Difference]: Without dead ends: 819 [2020-08-18 23:18:28,337 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-18 23:18:28,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2020-08-18 23:18:28,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 699. [2020-08-18 23:18:28,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2020-08-18 23:18:28,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 821 transitions. [2020-08-18 23:18:28,469 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 821 transitions. Word has length 84 [2020-08-18 23:18:28,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:18:28,470 INFO L479 AbstractCegarLoop]: Abstraction has 699 states and 821 transitions. [2020-08-18 23:18:28,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 23:18:28,470 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 821 transitions. [2020-08-18 23:18:28,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 23:18:28,477 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:18:28,478 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:18:28,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 23:18:28,478 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:18:28,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:18:28,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1300385726, now seen corresponding path program 1 times [2020-08-18 23:18:28,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:18:28,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100267892] [2020-08-18 23:18:28,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:18:28,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 23:18:28,541 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 23:18:28,541 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 23:18:28,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 23:18:28,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 11:18:28 BoogieIcfgContainer [2020-08-18 23:18:28,583 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 23:18:28,590 INFO L168 Benchmark]: Toolchain (without parser) took 30713.02 ms. Allocated memory was 142.1 MB in the beginning and 581.4 MB in the end (delta: 439.4 MB). Free memory was 101.4 MB in the beginning and 135.1 MB in the end (delta: -33.7 MB). Peak memory consumption was 405.7 MB. Max. memory is 7.1 GB. [2020-08-18 23:18:28,591 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 142.1 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 23:18:28,593 INFO L168 Benchmark]: CACSL2BoogieTranslator took 689.96 ms. Allocated memory was 142.1 MB in the beginning and 203.9 MB in the end (delta: 61.9 MB). Free memory was 101.2 MB in the beginning and 173.4 MB in the end (delta: -72.3 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. [2020-08-18 23:18:28,599 INFO L168 Benchmark]: Boogie Preprocessor took 89.27 ms. Allocated memory is still 203.9 MB. Free memory was 173.4 MB in the beginning and 169.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-08-18 23:18:28,601 INFO L168 Benchmark]: RCFGBuilder took 1140.88 ms. Allocated memory was 203.9 MB in the beginning and 235.4 MB in the end (delta: 31.5 MB). Free memory was 169.2 MB in the beginning and 200.1 MB in the end (delta: -30.9 MB). Peak memory consumption was 87.0 MB. Max. memory is 7.1 GB. [2020-08-18 23:18:28,602 INFO L168 Benchmark]: TraceAbstraction took 28785.15 ms. Allocated memory was 235.4 MB in the beginning and 581.4 MB in the end (delta: 346.0 MB). Free memory was 198.6 MB in the beginning and 135.1 MB in the end (delta: 63.5 MB). Peak memory consumption was 409.6 MB. Max. memory is 7.1 GB. [2020-08-18 23:18:28,608 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 142.1 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 689.96 ms. Allocated memory was 142.1 MB in the beginning and 203.9 MB in the end (delta: 61.9 MB). Free memory was 101.2 MB in the beginning and 173.4 MB in the end (delta: -72.3 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 89.27 ms. Allocated memory is still 203.9 MB. Free memory was 173.4 MB in the beginning and 169.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1140.88 ms. Allocated memory was 203.9 MB in the beginning and 235.4 MB in the end (delta: 31.5 MB). Free memory was 169.2 MB in the beginning and 200.1 MB in the end (delta: -30.9 MB). Peak memory consumption was 87.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 28785.15 ms. Allocated memory was 235.4 MB in the beginning and 581.4 MB in the end (delta: 346.0 MB). Free memory was 198.6 MB in the beginning and 135.1 MB in the end (delta: 63.5 MB). Peak memory consumption was 409.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 388]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L76] int waterLevel = 1; [L77] int methaneLevelCritical = 0; [L179] int cleanupTimeShifts = 4; [L395] int pumpRunning = 0; [L396] int systemActive = 1; [L769] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L258] int retValue_acc ; [L259] int tmp ; [L263] FCALL select_helpers() [L264] FCALL select_features() [L265] CALL, EXPR valid_product() [L307] int retValue_acc ; [L310] retValue_acc = 1 [L311] return (retValue_acc); [L265] RET, EXPR valid_product() [L265] tmp = valid_product() [L267] COND TRUE \read(tmp) [L269] FCALL setup() [L270] CALL runTest() [L249] CALL test() [L318] int splverifierCounter ; [L319] int tmp ; [L320] int tmp___0 ; [L321] int tmp___1 ; [L322] int tmp___2 ; [L325] splverifierCounter = 0 [L327] COND TRUE 1 [L329] COND TRUE splverifierCounter < 4 [L335] tmp = __VERIFIER_nondet_int() [L337] COND TRUE \read(tmp) [L339] CALL waterRise() [L94] COND TRUE waterLevel < 2 [L95] waterLevel = waterLevel + 1 [L339] RET waterRise() [L345] tmp___0 = __VERIFIER_nondet_int() [L347] COND TRUE \read(tmp___0) [L349] CALL changeMethaneLevel() [L106] COND FALSE !(\read(methaneLevelCritical)) [L109] methaneLevelCritical = 1 [L349] RET changeMethaneLevel() [L355] tmp___2 = __VERIFIER_nondet_int() [L357] COND FALSE !(\read(tmp___2)) [L363] tmp___1 = __VERIFIER_nondet_int() [L365] COND TRUE \read(tmp___1) [L372] CALL timeShift() [L402] COND FALSE !(\read(pumpRunning)) [L409] COND TRUE \read(systemActive) [L411] CALL processEnvironment() [L457] int tmp ; [L460] COND FALSE !(\read(pumpRunning)) [L475] CALL processEnvironment__wrappee__highWaterSensor() [L431] int tmp ; [L434] COND TRUE ! pumpRunning [L436] CALL, EXPR isHighWaterLevel() [L554] int retValue_acc ; [L555] int tmp ; [L556] int tmp___0 ; [L560] CALL, EXPR isHighWaterSensorDry() [L156] int retValue_acc ; [L159] COND FALSE !(waterLevel < 2) [L163] retValue_acc = 0 [L164] return (retValue_acc); [L560] RET, EXPR isHighWaterSensorDry() [L560] tmp = isHighWaterSensorDry() [L562] COND FALSE !(\read(tmp)) [L565] tmp___0 = 1 [L567] retValue_acc = tmp___0 [L568] return (retValue_acc); [L436] RET, EXPR isHighWaterLevel() [L436] tmp = isHighWaterLevel() [L438] COND TRUE \read(tmp) [L440] CALL activatePump() [L485] pumpRunning = 1 [L440] RET activatePump() [L475] RET processEnvironment__wrappee__highWaterSensor() [L411] RET processEnvironment() [L417] CALL __utac_acc__Specification1_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR isMethaneLevelCritical() [L115] int retValue_acc ; [L118] retValue_acc = methaneLevelCritical [L119] return (retValue_acc); [L49] RET, EXPR isMethaneLevelCritical() [L49] tmp = isMethaneLevelCritical() [L51] COND TRUE \read(tmp) [L53] CALL, EXPR isPumpRunning() [L509] int retValue_acc ; [L512] retValue_acc = pumpRunning [L513] return (retValue_acc); [L53] RET, EXPR isPumpRunning() [L53] tmp___0 = isPumpRunning() [L55] COND TRUE \read(tmp___0) [L57] CALL __automaton_fail() [L388] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 239 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 28.6s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 23.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1083 SDtfs, 1822 SDslu, 980 SDs, 0 SdLazy, 5100 SolverSat, 1186 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 320 GetRequests, 222 SyntacticMatches, 4 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 9.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=699occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 9 MinimizatonAttempts, 627 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 712 NumberOfCodeBlocks, 712 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 615 ConstructedInterpolants, 0 QuantifiedInterpolants, 190976 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 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...