/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product49.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 18:43:11,598 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 18:43:11,601 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 18:43:11,625 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 18:43:11,625 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 18:43:11,626 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 18:43:11,628 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 18:43:11,630 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 18:43:11,631 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 18:43:11,632 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 18:43:11,633 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 18:43:11,634 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 18:43:11,635 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 18:43:11,636 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 18:43:11,637 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 18:43:11,638 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 18:43:11,639 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 18:43:11,640 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 18:43:11,642 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 18:43:11,644 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 18:43:11,645 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 18:43:11,646 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 18:43:11,648 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 18:43:11,649 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 18:43:11,651 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 18:43:11,651 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 18:43:11,652 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 18:43:11,653 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 18:43:11,653 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 18:43:11,654 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 18:43:11,654 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 18:43:11,655 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 18:43:11,656 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 18:43:11,657 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 18:43:11,658 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 18:43:11,658 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 18:43:11,659 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 18:43:11,659 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 18:43:11,659 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 18:43:11,660 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 18:43:11,661 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 18:43:11,662 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 [2020-08-21 18:43:11,685 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 18:43:11,686 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 18:43:11,687 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 18:43:11,687 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 18:43:11,688 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 18:43:11,691 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 18:43:11,691 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 18:43:11,693 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 18:43:11,693 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 18:43:11,693 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 18:43:11,693 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 18:43:11,694 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 18:43:11,694 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 18:43:11,694 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 18:43:11,694 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 18:43:11,694 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 18:43:11,695 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 18:43:11,695 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 18:43:11,695 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 18:43:11,695 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 18:43:11,695 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 18:43:11,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 18:43:11,701 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 18:43:11,702 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 18:43:11,705 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 18:43:11,706 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 18:43:11,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 18:43:11,707 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 18:43:11,708 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 18:43:11,709 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; [2020-08-21 18:43:12,042 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 18:43:12,058 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 18:43:12,065 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 18:43:12,067 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 18:43:12,068 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 18:43:12,069 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product49.cil.c [2020-08-21 18:43:12,150 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9dc88200f/88847d3b9f404e31a50e1286cb6824e3/FLAG84d03a067 [2020-08-21 18:43:12,691 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 18:43:12,694 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product49.cil.c [2020-08-21 18:43:12,706 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9dc88200f/88847d3b9f404e31a50e1286cb6824e3/FLAG84d03a067 [2020-08-21 18:43:12,987 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9dc88200f/88847d3b9f404e31a50e1286cb6824e3 [2020-08-21 18:43:12,997 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 18:43:12,999 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 18:43:13,000 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 18:43:13,000 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 18:43:13,003 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 18:43:13,004 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:43:12" (1/1) ... [2020-08-21 18:43:13,007 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72dcb5c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:43:13, skipping insertion in model container [2020-08-21 18:43:13,008 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:43:12" (1/1) ... [2020-08-21 18:43:13,016 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 18:43:13,059 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 18:43:13,403 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:43:13,416 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 18:43:13,599 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:43:13,638 INFO L208 MainTranslator]: Completed translation [2020-08-21 18:43:13,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:43:13 WrapperNode [2020-08-21 18:43:13,639 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 18:43:13,643 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 18:43:13,643 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 18:43:13,643 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 18:43:13,653 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:43:13" (1/1) ... [2020-08-21 18:43:13,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:43:13" (1/1) ... [2020-08-21 18:43:13,674 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:43:13" (1/1) ... [2020-08-21 18:43:13,675 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:43:13" (1/1) ... [2020-08-21 18:43:13,705 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:43:13" (1/1) ... [2020-08-21 18:43:13,715 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:43:13" (1/1) ... [2020-08-21 18:43:13,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:43:13" (1/1) ... [2020-08-21 18:43:13,732 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 18:43:13,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 18:43:13,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 18:43:13,733 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 18:43:13,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:43:13" (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 [2020-08-21 18:43:13,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 18:43:13,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 18:43:13,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 18:43:13,816 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-21 18:43:13,817 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 18:43:13,817 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 18:43:13,817 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 18:43:13,817 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 18:43:13,817 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 18:43:13,817 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 18:43:13,818 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 18:43:13,818 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 18:43:13,818 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 18:43:13,818 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 18:43:13,818 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 18:43:13,818 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 18:43:13,819 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 18:43:13,819 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 18:43:13,819 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 18:43:13,819 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 18:43:13,819 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 18:43:13,820 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 18:43:13,820 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 18:43:13,820 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 18:43:13,820 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 18:43:13,820 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 18:43:13,820 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 18:43:13,820 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 18:43:13,821 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 18:43:13,821 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 18:43:13,821 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 18:43:13,821 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 18:43:13,821 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 18:43:13,821 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 18:43:13,822 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 18:43:13,822 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 18:43:13,822 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 18:43:13,822 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 18:43:13,822 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 18:43:13,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 18:43:13,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 18:43:13,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 18:43:13,823 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 18:43:13,823 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 18:43:13,823 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 18:43:13,823 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 18:43:13,824 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-21 18:43:13,824 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 18:43:13,824 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 18:43:13,824 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 18:43:13,824 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 18:43:13,824 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 18:43:13,824 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 18:43:13,825 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 18:43:13,825 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 18:43:13,825 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 18:43:13,825 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 18:43:13,825 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 18:43:13,825 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 18:43:13,826 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 18:43:13,826 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 18:43:13,826 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 18:43:13,826 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 18:43:13,826 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 18:43:13,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 18:43:13,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 18:43:13,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 18:43:13,827 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 18:43:13,827 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 18:43:13,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 18:43:13,827 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 18:43:13,827 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 18:43:13,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 18:43:13,828 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 18:43:13,828 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 18:43:13,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 18:43:13,830 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 18:43:13,830 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 18:43:13,830 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 18:43:13,830 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 18:43:13,830 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 18:43:13,830 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 18:43:13,831 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 18:43:13,832 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 18:43:13,832 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 18:43:13,832 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 18:43:13,832 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 18:43:13,832 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 18:43:13,832 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 18:43:13,832 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 18:43:13,833 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 18:43:13,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 18:43:13,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 18:43:13,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 18:43:14,910 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 18:43:14,910 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 18:43:14,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:43:14 BoogieIcfgContainer [2020-08-21 18:43:14,916 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 18:43:14,917 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 18:43:14,917 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 18:43:14,920 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 18:43:14,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 06:43:12" (1/3) ... [2020-08-21 18:43:14,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@209c7540 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:43:14, skipping insertion in model container [2020-08-21 18:43:14,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:43:13" (2/3) ... [2020-08-21 18:43:14,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@209c7540 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:43:14, skipping insertion in model container [2020-08-21 18:43:14,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:43:14" (3/3) ... [2020-08-21 18:43:14,924 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product49.cil.c [2020-08-21 18:43:14,935 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 18:43:14,944 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 18:43:14,958 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 18:43:14,984 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 18:43:14,984 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 18:43:14,984 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 18:43:14,984 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 18:43:14,985 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 18:43:14,985 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 18:43:14,985 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 18:43:14,985 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 18:43:15,007 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states. [2020-08-21 18:43:15,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 18:43:15,018 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:43:15,019 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] [2020-08-21 18:43:15,019 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:43:15,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:43:15,026 INFO L82 PathProgramCache]: Analyzing trace with hash 922466731, now seen corresponding path program 1 times [2020-08-21 18:43:15,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:43:15,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1510267498] [2020-08-21 18:43:15,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:43:15,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:15,674 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:43:15,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:43:15,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:15,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:43:15,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:15,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:43:15,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:15,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:43:15,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:15,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:43:15,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:15,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 18:43:15,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:15,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 18:43:15,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:15,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:43:15,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1510267498] [2020-08-21 18:43:15,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:43:15,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 18:43:15,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081355097] [2020-08-21 18:43:15,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 18:43:15,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:43:15,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 18:43:15,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 18:43:15,841 INFO L87 Difference]: Start difference. First operand 174 states. Second operand 3 states. [2020-08-21 18:43:16,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:43:16,983 INFO L93 Difference]: Finished difference Result 297 states and 388 transitions. [2020-08-21 18:43:16,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 18:43:16,985 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 18:43:16,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:43:16,999 INFO L225 Difference]: With dead ends: 297 [2020-08-21 18:43:16,999 INFO L226 Difference]: Without dead ends: 160 [2020-08-21 18:43:17,004 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 [2020-08-21 18:43:17,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-21 18:43:17,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 128. [2020-08-21 18:43:17,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-08-21 18:43:17,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 150 transitions. [2020-08-21 18:43:17,121 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 150 transitions. Word has length 46 [2020-08-21 18:43:17,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:43:17,122 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 150 transitions. [2020-08-21 18:43:17,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 18:43:17,122 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 150 transitions. [2020-08-21 18:43:17,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 18:43:17,127 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:43:17,127 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] [2020-08-21 18:43:17,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 18:43:17,127 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:43:17,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:43:17,128 INFO L82 PathProgramCache]: Analyzing trace with hash 288176866, now seen corresponding path program 1 times [2020-08-21 18:43:17,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:43:17,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2038362930] [2020-08-21 18:43:17,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:43:17,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:17,476 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:43:17,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:43:17,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:17,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:43:17,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:17,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:43:17,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:17,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:43:17,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:17,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:43:17,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:17,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 18:43:17,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:17,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 18:43:17,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:17,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:43:17,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2038362930] [2020-08-21 18:43:17,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:43:17,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 18:43:17,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557758464] [2020-08-21 18:43:17,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 18:43:17,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:43:17,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 18:43:17,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 18:43:17,525 INFO L87 Difference]: Start difference. First operand 128 states and 150 transitions. Second operand 4 states. [2020-08-21 18:43:18,002 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:43:18,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:43:18,813 INFO L93 Difference]: Finished difference Result 230 states and 279 transitions. [2020-08-21 18:43:18,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 18:43:18,814 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 18:43:18,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:43:18,816 INFO L225 Difference]: With dead ends: 230 [2020-08-21 18:43:18,816 INFO L226 Difference]: Without dead ends: 144 [2020-08-21 18:43:18,818 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 [2020-08-21 18:43:18,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-21 18:43:18,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 119. [2020-08-21 18:43:18,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-21 18:43:18,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 138 transitions. [2020-08-21 18:43:18,852 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 138 transitions. Word has length 47 [2020-08-21 18:43:18,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:43:18,853 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 138 transitions. [2020-08-21 18:43:18,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 18:43:18,853 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 138 transitions. [2020-08-21 18:43:18,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 18:43:18,855 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:43:18,855 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:43:18,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 18:43:18,856 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:43:18,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:43:18,856 INFO L82 PathProgramCache]: Analyzing trace with hash -2059632594, now seen corresponding path program 1 times [2020-08-21 18:43:18,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:43:18,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633307149] [2020-08-21 18:43:18,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:43:18,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:19,213 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:43:19,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:43:19,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:19,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:43:19,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:19,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:43:19,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:19,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:43:19,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:19,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:43:19,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:19,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:43:19,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:19,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 18:43:19,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:19,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:43:19,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1633307149] [2020-08-21 18:43:19,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:43:19,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 18:43:19,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858366257] [2020-08-21 18:43:19,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 18:43:19,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:43:19,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 18:43:19,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 18:43:19,366 INFO L87 Difference]: Start difference. First operand 119 states and 138 transitions. Second operand 8 states. [2020-08-21 18:43:19,774 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:43:20,070 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:43:20,326 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:43:20,555 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:43:21,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:43:21,631 INFO L93 Difference]: Finished difference Result 239 states and 293 transitions. [2020-08-21 18:43:21,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 18:43:21,632 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-21 18:43:21,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:43:21,635 INFO L225 Difference]: With dead ends: 239 [2020-08-21 18:43:21,636 INFO L226 Difference]: Without dead ends: 144 [2020-08-21 18:43:21,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 18:43:21,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-21 18:43:21,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 119. [2020-08-21 18:43:21,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-21 18:43:21,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 137 transitions. [2020-08-21 18:43:21,671 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 137 transitions. Word has length 51 [2020-08-21 18:43:21,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:43:21,672 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 137 transitions. [2020-08-21 18:43:21,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 18:43:21,672 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 137 transitions. [2020-08-21 18:43:21,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-21 18:43:21,674 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:43:21,674 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] [2020-08-21 18:43:21,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 18:43:21,674 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:43:21,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:43:21,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1182566725, now seen corresponding path program 1 times [2020-08-21 18:43:21,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:43:21,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252933829] [2020-08-21 18:43:21,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:43:21,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:21,948 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:43:21,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:43:21,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:22,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:43:22,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:22,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:43:22,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:22,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:43:22,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:22,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:43:22,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:22,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 18:43:22,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:22,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:43:22,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:22,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:43:22,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:22,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 18:43:22,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:22,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 18:43:22,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:22,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:43:22,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252933829] [2020-08-21 18:43:22,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:43:22,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 18:43:22,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566194226] [2020-08-21 18:43:22,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 18:43:22,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:43:22,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 18:43:22,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 18:43:22,109 INFO L87 Difference]: Start difference. First operand 119 states and 137 transitions. Second operand 6 states. [2020-08-21 18:43:22,426 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:43:23,564 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:43:24,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:43:24,149 INFO L93 Difference]: Finished difference Result 331 states and 409 transitions. [2020-08-21 18:43:24,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 18:43:24,150 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-08-21 18:43:24,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:43:24,154 INFO L225 Difference]: With dead ends: 331 [2020-08-21 18:43:24,154 INFO L226 Difference]: Without dead ends: 236 [2020-08-21 18:43:24,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-21 18:43:24,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-08-21 18:43:24,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 195. [2020-08-21 18:43:24,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-08-21 18:43:24,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 222 transitions. [2020-08-21 18:43:24,199 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 222 transitions. Word has length 64 [2020-08-21 18:43:24,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:43:24,199 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 222 transitions. [2020-08-21 18:43:24,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 18:43:24,200 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 222 transitions. [2020-08-21 18:43:24,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-21 18:43:24,201 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:43:24,202 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] [2020-08-21 18:43:24,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 18:43:24,202 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:43:24,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:43:24,202 INFO L82 PathProgramCache]: Analyzing trace with hash 590157777, now seen corresponding path program 1 times [2020-08-21 18:43:24,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:43:24,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116287931] [2020-08-21 18:43:24,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:43:24,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:24,510 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:43:24,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:43:24,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:24,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:43:24,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:24,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:43:24,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:24,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:43:24,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:24,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:43:24,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:24,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 18:43:24,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:24,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:43:24,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:24,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:43:24,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:24,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:43:24,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:24,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:43:24,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:24,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 18:43:24,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:24,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 18:43:24,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:24,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:43:24,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1116287931] [2020-08-21 18:43:24,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:43:24,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 18:43:24,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680376058] [2020-08-21 18:43:24,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 18:43:24,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:43:24,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 18:43:24,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 18:43:24,602 INFO L87 Difference]: Start difference. First operand 195 states and 222 transitions. Second operand 8 states. [2020-08-21 18:43:24,993 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:43:26,039 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:43:26,299 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:43:26,529 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:43:26,751 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:43:27,047 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:43:28,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:43:28,113 INFO L93 Difference]: Finished difference Result 580 states and 716 transitions. [2020-08-21 18:43:28,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 18:43:28,116 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2020-08-21 18:43:28,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:43:28,120 INFO L225 Difference]: With dead ends: 580 [2020-08-21 18:43:28,121 INFO L226 Difference]: Without dead ends: 409 [2020-08-21 18:43:28,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-21 18:43:28,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2020-08-21 18:43:28,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 345. [2020-08-21 18:43:28,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-08-21 18:43:28,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 394 transitions. [2020-08-21 18:43:28,201 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 394 transitions. Word has length 78 [2020-08-21 18:43:28,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:43:28,202 INFO L479 AbstractCegarLoop]: Abstraction has 345 states and 394 transitions. [2020-08-21 18:43:28,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 18:43:28,202 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 394 transitions. [2020-08-21 18:43:28,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-21 18:43:28,204 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:43:28,204 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] [2020-08-21 18:43:28,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 18:43:28,205 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:43:28,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:43:28,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1032148237, now seen corresponding path program 1 times [2020-08-21 18:43:28,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:43:28,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [620382513] [2020-08-21 18:43:28,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:43:28,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:28,487 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:43:28,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:43:28,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:28,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:43:28,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:28,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:43:28,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:28,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:43:28,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:28,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:43:28,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:28,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 18:43:28,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:28,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 18:43:28,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:28,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:43:28,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:28,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:43:28,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:28,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:43:28,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:28,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:43:28,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:28,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-21 18:43:28,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:28,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 18:43:28,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:28,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:43:28,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [620382513] [2020-08-21 18:43:28,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:43:28,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 18:43:28,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917982939] [2020-08-21 18:43:28,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 18:43:28,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:43:28,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 18:43:28,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 18:43:28,606 INFO L87 Difference]: Start difference. First operand 345 states and 394 transitions. Second operand 9 states. [2020-08-21 18:43:29,028 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:43:30,027 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:43:30,246 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:43:30,530 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:43:30,770 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:43:31,009 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:43:32,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:43:32,042 INFO L93 Difference]: Finished difference Result 448 states and 562 transitions. [2020-08-21 18:43:32,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 18:43:32,043 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-08-21 18:43:32,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:43:32,048 INFO L225 Difference]: With dead ends: 448 [2020-08-21 18:43:32,048 INFO L226 Difference]: Without dead ends: 445 [2020-08-21 18:43:32,049 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 [2020-08-21 18:43:32,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2020-08-21 18:43:32,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 345. [2020-08-21 18:43:32,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-08-21 18:43:32,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 393 transitions. [2020-08-21 18:43:32,116 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 393 transitions. Word has length 82 [2020-08-21 18:43:32,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:43:32,117 INFO L479 AbstractCegarLoop]: Abstraction has 345 states and 393 transitions. [2020-08-21 18:43:32,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 18:43:32,117 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 393 transitions. [2020-08-21 18:43:32,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-21 18:43:32,119 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:43:32,119 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] [2020-08-21 18:43:32,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 18:43:32,120 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:43:32,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:43:32,120 INFO L82 PathProgramCache]: Analyzing trace with hash 2065507240, now seen corresponding path program 1 times [2020-08-21 18:43:32,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:43:32,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [308950395] [2020-08-21 18:43:32,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:43:32,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:32,403 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:43:32,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:43:32,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:32,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:43:32,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:32,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:43:32,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:32,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:43:32,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:32,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:43:32,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:32,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 18:43:32,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:32,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 18:43:32,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:32,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:43:32,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:32,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:43:32,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:32,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:43:32,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:32,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:43:32,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:32,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-21 18:43:32,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:32,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 18:43:32,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:32,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:43:32,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [308950395] [2020-08-21 18:43:32,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:43:32,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 18:43:32,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136856171] [2020-08-21 18:43:32,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 18:43:32,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:43:32,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 18:43:32,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 18:43:32,556 INFO L87 Difference]: Start difference. First operand 345 states and 393 transitions. Second operand 9 states. [2020-08-21 18:43:33,610 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:43:33,852 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:43:34,110 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:43:34,348 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:43:35,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:43:35,316 INFO L93 Difference]: Finished difference Result 770 states and 946 transitions. [2020-08-21 18:43:35,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 18:43:35,319 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-21 18:43:35,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:43:35,324 INFO L225 Difference]: With dead ends: 770 [2020-08-21 18:43:35,324 INFO L226 Difference]: Without dead ends: 449 [2020-08-21 18:43:35,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 18:43:35,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2020-08-21 18:43:35,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 355. [2020-08-21 18:43:35,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2020-08-21 18:43:35,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 403 transitions. [2020-08-21 18:43:35,402 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 403 transitions. Word has length 83 [2020-08-21 18:43:35,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:43:35,402 INFO L479 AbstractCegarLoop]: Abstraction has 355 states and 403 transitions. [2020-08-21 18:43:35,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 18:43:35,402 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 403 transitions. [2020-08-21 18:43:35,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-21 18:43:35,404 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:43:35,404 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] [2020-08-21 18:43:35,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 18:43:35,405 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:43:35,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:43:35,405 INFO L82 PathProgramCache]: Analyzing trace with hash 2088139494, now seen corresponding path program 1 times [2020-08-21 18:43:35,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:43:35,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [210839474] [2020-08-21 18:43:35,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:43:35,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:35,661 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:43:35,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:43:35,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:35,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:43:35,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:35,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:43:35,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:35,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:43:35,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:35,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:43:35,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:35,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 18:43:35,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:35,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 18:43:35,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:35,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:43:35,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:35,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:43:35,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:35,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:43:35,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:35,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:43:35,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:35,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-21 18:43:35,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:35,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 18:43:35,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:35,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:43:35,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [210839474] [2020-08-21 18:43:35,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:43:35,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 18:43:35,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674176101] [2020-08-21 18:43:35,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 18:43:35,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:43:35,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 18:43:35,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 18:43:35,793 INFO L87 Difference]: Start difference. First operand 355 states and 403 transitions. Second operand 11 states. [2020-08-21 18:43:36,415 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:43:36,744 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:43:37,059 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:43:37,674 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:43:37,910 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:43:38,160 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:43:39,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:43:39,274 INFO L93 Difference]: Finished difference Result 794 states and 986 transitions. [2020-08-21 18:43:39,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 18:43:39,275 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 83 [2020-08-21 18:43:39,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:43:39,279 INFO L225 Difference]: With dead ends: 794 [2020-08-21 18:43:39,280 INFO L226 Difference]: Without dead ends: 463 [2020-08-21 18:43:39,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 18:43:39,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2020-08-21 18:43:39,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 363. [2020-08-21 18:43:39,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2020-08-21 18:43:39,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 411 transitions. [2020-08-21 18:43:39,344 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 411 transitions. Word has length 83 [2020-08-21 18:43:39,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:43:39,344 INFO L479 AbstractCegarLoop]: Abstraction has 363 states and 411 transitions. [2020-08-21 18:43:39,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 18:43:39,344 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 411 transitions. [2020-08-21 18:43:39,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-21 18:43:39,346 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:43:39,346 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] [2020-08-21 18:43:39,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 18:43:39,346 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:43:39,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:43:39,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1181335803, now seen corresponding path program 1 times [2020-08-21 18:43:39,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:43:39,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616301461] [2020-08-21 18:43:39,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:43:39,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:39,600 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:43:39,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:43:39,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:39,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:43:39,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:39,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:43:39,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:39,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:43:39,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:39,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:43:39,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:39,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 18:43:39,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:39,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 18:43:39,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:39,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:43:39,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:39,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:43:39,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:39,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:43:39,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:39,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:43:39,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:39,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-21 18:43:39,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:39,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 18:43:39,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:39,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:43:39,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616301461] [2020-08-21 18:43:39,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:43:39,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 18:43:39,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852133456] [2020-08-21 18:43:39,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 18:43:39,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:43:39,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 18:43:39,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 18:43:39,722 INFO L87 Difference]: Start difference. First operand 363 states and 411 transitions. Second operand 7 states. [2020-08-21 18:43:40,146 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:43:40,626 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:43:42,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:43:42,576 INFO L93 Difference]: Finished difference Result 1097 states and 1408 transitions. [2020-08-21 18:43:42,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 18:43:42,577 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 83 [2020-08-21 18:43:42,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:43:42,583 INFO L225 Difference]: With dead ends: 1097 [2020-08-21 18:43:42,583 INFO L226 Difference]: Without dead ends: 758 [2020-08-21 18:43:42,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-21 18:43:42,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2020-08-21 18:43:42,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 659. [2020-08-21 18:43:42,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2020-08-21 18:43:42,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 781 transitions. [2020-08-21 18:43:42,718 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 781 transitions. Word has length 83 [2020-08-21 18:43:42,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:43:42,720 INFO L479 AbstractCegarLoop]: Abstraction has 659 states and 781 transitions. [2020-08-21 18:43:42,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 18:43:42,720 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 781 transitions. [2020-08-21 18:43:42,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-21 18:43:42,723 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:43:42,723 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] [2020-08-21 18:43:42,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 18:43:42,724 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:43:42,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:43:42,724 INFO L82 PathProgramCache]: Analyzing trace with hash -765720469, now seen corresponding path program 1 times [2020-08-21 18:43:42,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:43:42,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833119687] [2020-08-21 18:43:42,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:43:42,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 18:43:42,777 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 18:43:42,777 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 18:43:42,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 18:43:42,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 06:43:42 BoogieIcfgContainer [2020-08-21 18:43:42,805 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 18:43:42,807 INFO L168 Benchmark]: Toolchain (without parser) took 29808.93 ms. Allocated memory was 141.6 MB in the beginning and 606.6 MB in the end (delta: 465.0 MB). Free memory was 103.8 MB in the beginning and 381.3 MB in the end (delta: -277.5 MB). Peak memory consumption was 187.5 MB. Max. memory is 7.1 GB. [2020-08-21 18:43:42,808 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 18:43:42,809 INFO L168 Benchmark]: CACSL2BoogieTranslator took 640.33 ms. Allocated memory was 141.6 MB in the beginning and 203.9 MB in the end (delta: 62.4 MB). Free memory was 103.6 MB in the beginning and 173.5 MB in the end (delta: -69.9 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. [2020-08-21 18:43:42,809 INFO L168 Benchmark]: Boogie Preprocessor took 89.72 ms. Allocated memory is still 203.9 MB. Free memory was 173.5 MB in the beginning and 169.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-21 18:43:42,810 INFO L168 Benchmark]: RCFGBuilder took 1183.17 ms. Allocated memory was 203.9 MB in the beginning and 234.9 MB in the end (delta: 30.9 MB). Free memory was 169.5 MB in the beginning and 193.1 MB in the end (delta: -23.6 MB). Peak memory consumption was 81.4 MB. Max. memory is 7.1 GB. [2020-08-21 18:43:42,811 INFO L168 Benchmark]: TraceAbstraction took 27888.43 ms. Allocated memory was 234.9 MB in the beginning and 606.6 MB in the end (delta: 371.7 MB). Free memory was 191.7 MB in the beginning and 381.3 MB in the end (delta: -189.6 MB). Peak memory consumption was 182.1 MB. Max. memory is 7.1 GB. [2020-08-21 18:43:42,814 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 640.33 ms. Allocated memory was 141.6 MB in the beginning and 203.9 MB in the end (delta: 62.4 MB). Free memory was 103.6 MB in the beginning and 173.5 MB in the end (delta: -69.9 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 89.72 ms. Allocated memory is still 203.9 MB. Free memory was 173.5 MB in the beginning and 169.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1183.17 ms. Allocated memory was 203.9 MB in the beginning and 234.9 MB in the end (delta: 30.9 MB). Free memory was 169.5 MB in the beginning and 193.1 MB in the end (delta: -23.6 MB). Peak memory consumption was 81.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 27888.43 ms. Allocated memory was 234.9 MB in the beginning and 606.6 MB in the end (delta: 371.7 MB). Free memory was 191.7 MB in the beginning and 381.3 MB in the end (delta: -189.6 MB). Peak memory consumption was 182.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 950]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L69] int cleanupTimeShifts = 4; [L342] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L545] int pumpRunning = 0; [L546] int systemActive = 1; [L843] int waterLevel = 1; [L844] int methaneLevelCritical = 0; [L150] int retValue_acc ; [L151] int tmp ; [L155] FCALL select_helpers() [L156] FCALL select_features() [L157] CALL, EXPR valid_product() [L833] int retValue_acc ; [L836] retValue_acc = 1 [L837] return (retValue_acc); [L157] RET, EXPR valid_product() [L157] tmp = valid_product() [L159] COND TRUE \read(tmp) [L161] FCALL setup() [L162] CALL runTest() [L141] CALL test() [L743] int splverifierCounter ; [L744] int tmp ; [L745] int tmp___0 ; [L746] int tmp___1 ; [L747] int tmp___2 ; [L750] splverifierCounter = 0 [L752] COND TRUE 1 [L754] COND TRUE splverifierCounter < 4 [L760] tmp = __VERIFIER_nondet_int() [L762] COND TRUE \read(tmp) [L764] CALL waterRise() [L861] COND TRUE waterLevel < 2 [L862] waterLevel = waterLevel + 1 [L764] RET waterRise() [L770] tmp___0 = __VERIFIER_nondet_int() [L772] COND TRUE \read(tmp___0) [L774] CALL changeMethaneLevel() [L873] COND FALSE !(\read(methaneLevelCritical)) [L876] methaneLevelCritical = 1 [L774] RET changeMethaneLevel() [L780] tmp___2 = __VERIFIER_nondet_int() [L782] COND TRUE \read(tmp___2) [L795] CALL timeShift() [L552] COND FALSE !(\read(pumpRunning)) [L559] COND TRUE \read(systemActive) [L561] CALL processEnvironment() [L607] int tmp ; [L610] COND FALSE !(\read(pumpRunning)) [L625] CALL processEnvironment__wrappee__highWaterSensor() [L581] int tmp ; [L584] COND TRUE ! pumpRunning [L586] CALL, EXPR isHighWaterLevel() [L704] int retValue_acc ; [L705] int tmp ; [L706] int tmp___0 ; [L710] CALL, EXPR isHighWaterSensorDry() [L923] int retValue_acc ; [L926] COND FALSE !(waterLevel < 2) [L930] retValue_acc = 0 [L931] return (retValue_acc); [L710] RET, EXPR isHighWaterSensorDry() [L710] tmp = isHighWaterSensorDry() [L712] COND FALSE !(\read(tmp)) [L715] tmp___0 = 1 [L717] retValue_acc = tmp___0 [L718] return (retValue_acc); [L586] RET, EXPR isHighWaterLevel() [L586] tmp = isHighWaterLevel() [L588] COND TRUE \read(tmp) [L590] CALL activatePump() [L635] pumpRunning = 1 [L590] RET activatePump() [L625] RET processEnvironment__wrappee__highWaterSensor() [L561] RET processEnvironment() [L567] CALL __utac_acc__Specification1_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR isMethaneLevelCritical() [L882] int retValue_acc ; [L885] retValue_acc = methaneLevelCritical [L886] return (retValue_acc); [L49] RET, EXPR isMethaneLevelCritical() [L49] tmp = isMethaneLevelCritical() [L51] COND TRUE \read(tmp) [L53] CALL, EXPR isPumpRunning() [L659] int retValue_acc ; [L662] retValue_acc = pumpRunning [L663] return (retValue_acc); [L53] RET, EXPR isPumpRunning() [L53] tmp___0 = isPumpRunning() [L55] COND TRUE \read(tmp___0) [L57] CALL __automaton_fail() [L950] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 235 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 27.8s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 22.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1044 SDtfs, 1701 SDslu, 959 SDs, 0 SdLazy, 4850 SolverSat, 1008 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 316 GetRequests, 219 SyntacticMatches, 4 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 9.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=659occurred 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: 0.6s AutomataMinimizationTime, 9 MinimizatonAttempts, 580 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 704 NumberOfCodeBlocks, 704 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 608 ConstructedInterpolants, 0 QuantifiedInterpolants, 186785 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...