./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec4_product46.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/minepump_spec4_product46.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0c528157ad3ccc512d501b1e66086beae537118a .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 01:44:14,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 01:44:14,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 01:44:14,673 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 01:44:14,674 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 01:44:14,675 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 01:44:14,676 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 01:44:14,678 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 01:44:14,680 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 01:44:14,680 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 01:44:14,681 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 01:44:14,682 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 01:44:14,683 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 01:44:14,684 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 01:44:14,685 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 01:44:14,686 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 01:44:14,687 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 01:44:14,689 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 01:44:14,691 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 01:44:14,692 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 01:44:14,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 01:44:14,695 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 01:44:14,696 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 01:44:14,700 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 01:44:14,702 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 01:44:14,702 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 01:44:14,703 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 01:44:14,707 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 01:44:14,707 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 01:44:14,711 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 01:44:14,711 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 01:44:14,712 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 01:44:14,713 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 01:44:14,714 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 01:44:14,715 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 01:44:14,715 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 01:44:14,716 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 01:44:14,716 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 01:44:14,716 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 01:44:14,717 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 01:44:14,718 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 01:44:14,718 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 01:44:14,764 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 01:44:14,764 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 01:44:14,766 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 01:44:14,769 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 01:44:14,769 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 01:44:14,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 01:44:14,771 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 01:44:14,771 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 01:44:14,771 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 01:44:14,772 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 01:44:14,772 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 01:44:14,772 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 01:44:14,772 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 01:44:14,772 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 01:44:14,772 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 01:44:14,773 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 01:44:14,773 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 01:44:14,773 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 01:44:14,773 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 01:44:14,773 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 01:44:14,774 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 01:44:14,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 01:44:14,777 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 01:44:14,777 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 01:44:14,777 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 01:44:14,778 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 01:44:14,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 01:44:14,778 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 01:44:14,778 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 01:44:14,778 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c528157ad3ccc512d501b1e66086beae537118a [2020-10-20 01:44:14,977 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 01:44:14,989 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 01:44:14,994 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 01:44:14,996 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 01:44:14,999 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 01:44:15,000 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec4_product46.cil.c [2020-10-20 01:44:15,068 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80ad6c2ae/6a2ace74c9bd4aa79060f1fadb98ea29/FLAGc6458e6e8 [2020-10-20 01:44:15,608 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 01:44:15,609 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product46.cil.c [2020-10-20 01:44:15,629 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80ad6c2ae/6a2ace74c9bd4aa79060f1fadb98ea29/FLAGc6458e6e8 [2020-10-20 01:44:15,891 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80ad6c2ae/6a2ace74c9bd4aa79060f1fadb98ea29 [2020-10-20 01:44:15,895 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 01:44:15,902 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 01:44:15,903 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 01:44:15,903 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 01:44:15,907 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 01:44:15,908 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:44:15" (1/1) ... [2020-10-20 01:44:15,911 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c6532d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:15, skipping insertion in model container [2020-10-20 01:44:15,911 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:44:15" (1/1) ... [2020-10-20 01:44:15,919 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 01:44:15,971 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 01:44:16,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:44:16,387 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 01:44:16,474 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:44:16,513 INFO L208 MainTranslator]: Completed translation [2020-10-20 01:44:16,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:16 WrapperNode [2020-10-20 01:44:16,514 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 01:44:16,515 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 01:44:16,515 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 01:44:16,515 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 01:44:16,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:16" (1/1) ... [2020-10-20 01:44:16,543 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:16" (1/1) ... [2020-10-20 01:44:16,604 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 01:44:16,605 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 01:44:16,605 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 01:44:16,605 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 01:44:16,615 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:16" (1/1) ... [2020-10-20 01:44:16,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:16" (1/1) ... [2020-10-20 01:44:16,622 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:16" (1/1) ... [2020-10-20 01:44:16,622 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:16" (1/1) ... [2020-10-20 01:44:16,637 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:16" (1/1) ... [2020-10-20 01:44:16,647 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:16" (1/1) ... [2020-10-20 01:44:16,650 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:16" (1/1) ... [2020-10-20 01:44:16,656 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 01:44:16,657 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 01:44:16,657 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 01:44:16,657 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 01:44:16,658 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-10-20 01:44:16,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 01:44:16,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 01:44:16,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 01:44:16,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 01:44:17,894 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 01:44:17,894 INFO L298 CfgBuilder]: Removed 200 assume(true) statements. [2020-10-20 01:44:17,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:44:17 BoogieIcfgContainer [2020-10-20 01:44:17,897 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 01:44:17,898 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 01:44:17,898 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 01:44:17,902 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 01:44:17,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 01:44:15" (1/3) ... [2020-10-20 01:44:17,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28903d2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:44:17, skipping insertion in model container [2020-10-20 01:44:17,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:16" (2/3) ... [2020-10-20 01:44:17,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28903d2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:44:17, skipping insertion in model container [2020-10-20 01:44:17,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:44:17" (3/3) ... [2020-10-20 01:44:17,907 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product46.cil.c [2020-10-20 01:44:17,919 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 01:44:17,926 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-20 01:44:17,940 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-20 01:44:17,966 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 01:44:17,967 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 01:44:17,967 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 01:44:17,967 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 01:44:17,968 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 01:44:17,968 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 01:44:17,968 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 01:44:17,969 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 01:44:17,998 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states. [2020-10-20 01:44:18,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 01:44:18,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:18,006 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:44:18,006 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:18,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:18,012 INFO L82 PathProgramCache]: Analyzing trace with hash 677139685, now seen corresponding path program 1 times [2020-10-20 01:44:18,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:18,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334364422] [2020-10-20 01:44:18,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:18,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:18,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:44:18,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334364422] [2020-10-20 01:44:18,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:18,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:44:18,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288331535] [2020-10-20 01:44:18,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 01:44:18,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:18,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 01:44:18,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 01:44:18,370 INFO L87 Difference]: Start difference. First operand 132 states. Second operand 2 states. [2020-10-20 01:44:18,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:18,407 INFO L93 Difference]: Finished difference Result 255 states and 380 transitions. [2020-10-20 01:44:18,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 01:44:18,409 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-10-20 01:44:18,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:18,422 INFO L225 Difference]: With dead ends: 255 [2020-10-20 01:44:18,422 INFO L226 Difference]: Without dead ends: 125 [2020-10-20 01:44:18,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 01:44:18,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-20 01:44:18,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-10-20 01:44:18,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-20 01:44:18,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 180 transitions. [2020-10-20 01:44:18,478 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 180 transitions. Word has length 16 [2020-10-20 01:44:18,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:18,480 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 180 transitions. [2020-10-20 01:44:18,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 01:44:18,480 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 180 transitions. [2020-10-20 01:44:18,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 01:44:18,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:18,481 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:44:18,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 01:44:18,482 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:18,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:18,483 INFO L82 PathProgramCache]: Analyzing trace with hash -369617212, now seen corresponding path program 1 times [2020-10-20 01:44:18,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:18,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978624492] [2020-10-20 01:44:18,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:18,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:18,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:44:18,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978624492] [2020-10-20 01:44:18,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:18,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 01:44:18,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853402054] [2020-10-20 01:44:18,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:44:18,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:18,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:44:18,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:44:18,640 INFO L87 Difference]: Start difference. First operand 125 states and 180 transitions. Second operand 3 states. [2020-10-20 01:44:18,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:18,655 INFO L93 Difference]: Finished difference Result 125 states and 180 transitions. [2020-10-20 01:44:18,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:44:18,656 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-20 01:44:18,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:18,657 INFO L225 Difference]: With dead ends: 125 [2020-10-20 01:44:18,657 INFO L226 Difference]: Without dead ends: 51 [2020-10-20 01:44:18,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:44:18,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-20 01:44:18,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-10-20 01:44:18,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-20 01:44:18,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 73 transitions. [2020-10-20 01:44:18,666 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 73 transitions. Word has length 17 [2020-10-20 01:44:18,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:18,666 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 73 transitions. [2020-10-20 01:44:18,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:44:18,667 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 73 transitions. [2020-10-20 01:44:18,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-20 01:44:18,668 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:18,668 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] [2020-10-20 01:44:18,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 01:44:18,668 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:18,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:18,669 INFO L82 PathProgramCache]: Analyzing trace with hash 640818778, now seen corresponding path program 1 times [2020-10-20 01:44:18,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:18,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898598204] [2020-10-20 01:44:18,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:18,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:18,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:44:18,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898598204] [2020-10-20 01:44:18,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:18,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 01:44:18,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113010495] [2020-10-20 01:44:18,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:44:18,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:18,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:44:18,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:44:18,793 INFO L87 Difference]: Start difference. First operand 51 states and 73 transitions. Second operand 3 states. [2020-10-20 01:44:18,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:18,820 INFO L93 Difference]: Finished difference Result 96 states and 140 transitions. [2020-10-20 01:44:18,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:44:18,821 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-20 01:44:18,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:18,822 INFO L225 Difference]: With dead ends: 96 [2020-10-20 01:44:18,823 INFO L226 Difference]: Without dead ends: 51 [2020-10-20 01:44:18,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:44:18,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-20 01:44:18,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-10-20 01:44:18,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-20 01:44:18,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 72 transitions. [2020-10-20 01:44:18,832 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 72 transitions. Word has length 22 [2020-10-20 01:44:18,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:18,832 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 72 transitions. [2020-10-20 01:44:18,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:44:18,833 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 72 transitions. [2020-10-20 01:44:18,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-20 01:44:18,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:18,834 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] [2020-10-20 01:44:18,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 01:44:18,835 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:18,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:18,836 INFO L82 PathProgramCache]: Analyzing trace with hash -855709928, now seen corresponding path program 1 times [2020-10-20 01:44:18,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:18,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936019930] [2020-10-20 01:44:18,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:18,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:18,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:44:18,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936019930] [2020-10-20 01:44:18,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:18,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:44:18,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845624931] [2020-10-20 01:44:18,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:44:18,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:18,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:44:18,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:44:18,944 INFO L87 Difference]: Start difference. First operand 51 states and 72 transitions. Second operand 3 states. [2020-10-20 01:44:18,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:18,985 INFO L93 Difference]: Finished difference Result 117 states and 168 transitions. [2020-10-20 01:44:18,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:44:18,986 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-20 01:44:18,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:18,988 INFO L225 Difference]: With dead ends: 117 [2020-10-20 01:44:18,988 INFO L226 Difference]: Without dead ends: 72 [2020-10-20 01:44:18,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:44:18,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-20 01:44:18,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2020-10-20 01:44:18,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-20 01:44:19,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 98 transitions. [2020-10-20 01:44:19,000 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 98 transitions. Word has length 24 [2020-10-20 01:44:19,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:19,001 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 98 transitions. [2020-10-20 01:44:19,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:44:19,001 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 98 transitions. [2020-10-20 01:44:19,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-20 01:44:19,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:19,003 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] [2020-10-20 01:44:19,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 01:44:19,004 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:19,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:19,004 INFO L82 PathProgramCache]: Analyzing trace with hash -407287284, now seen corresponding path program 1 times [2020-10-20 01:44:19,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:19,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287569698] [2020-10-20 01:44:19,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:19,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:19,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:44:19,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287569698] [2020-10-20 01:44:19,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:19,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 01:44:19,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977850055] [2020-10-20 01:44:19,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:44:19,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:19,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:44:19,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:44:19,129 INFO L87 Difference]: Start difference. First operand 70 states and 98 transitions. Second operand 5 states. [2020-10-20 01:44:19,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:19,285 INFO L93 Difference]: Finished difference Result 247 states and 354 transitions. [2020-10-20 01:44:19,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 01:44:19,286 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-10-20 01:44:19,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:19,288 INFO L225 Difference]: With dead ends: 247 [2020-10-20 01:44:19,288 INFO L226 Difference]: Without dead ends: 183 [2020-10-20 01:44:19,289 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-20 01:44:19,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-20 01:44:19,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 113. [2020-10-20 01:44:19,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-20 01:44:19,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 155 transitions. [2020-10-20 01:44:19,306 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 155 transitions. Word has length 30 [2020-10-20 01:44:19,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:19,306 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 155 transitions. [2020-10-20 01:44:19,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:44:19,307 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 155 transitions. [2020-10-20 01:44:19,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-20 01:44:19,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:19,308 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] [2020-10-20 01:44:19,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 01:44:19,309 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:19,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:19,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1879863818, now seen corresponding path program 1 times [2020-10-20 01:44:19,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:19,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111491223] [2020-10-20 01:44:19,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:19,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:19,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:44:19,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111491223] [2020-10-20 01:44:19,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:19,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 01:44:19,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801965312] [2020-10-20 01:44:19,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 01:44:19,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:19,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 01:44:19,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 01:44:19,380 INFO L87 Difference]: Start difference. First operand 113 states and 155 transitions. Second operand 4 states. [2020-10-20 01:44:19,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:19,543 INFO L93 Difference]: Finished difference Result 234 states and 328 transitions. [2020-10-20 01:44:19,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 01:44:19,544 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-20 01:44:19,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:19,545 INFO L225 Difference]: With dead ends: 234 [2020-10-20 01:44:19,546 INFO L226 Difference]: Without dead ends: 170 [2020-10-20 01:44:19,547 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 01:44:19,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-20 01:44:19,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 167. [2020-10-20 01:44:19,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-20 01:44:19,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 230 transitions. [2020-10-20 01:44:19,564 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 230 transitions. Word has length 31 [2020-10-20 01:44:19,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:19,565 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 230 transitions. [2020-10-20 01:44:19,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 01:44:19,565 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 230 transitions. [2020-10-20 01:44:19,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-20 01:44:19,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:19,567 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] [2020-10-20 01:44:19,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 01:44:19,567 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:19,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:19,568 INFO L82 PathProgramCache]: Analyzing trace with hash 2138029256, now seen corresponding path program 1 times [2020-10-20 01:44:19,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:19,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173703289] [2020-10-20 01:44:19,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:19,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:19,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:44:19,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173703289] [2020-10-20 01:44:19,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:19,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 01:44:19,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969924332] [2020-10-20 01:44:19,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 01:44:19,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:19,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 01:44:19,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 01:44:19,628 INFO L87 Difference]: Start difference. First operand 167 states and 230 transitions. Second operand 4 states. [2020-10-20 01:44:19,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:19,690 INFO L93 Difference]: Finished difference Result 465 states and 652 transitions. [2020-10-20 01:44:19,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 01:44:19,690 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-20 01:44:19,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:19,693 INFO L225 Difference]: With dead ends: 465 [2020-10-20 01:44:19,693 INFO L226 Difference]: Without dead ends: 346 [2020-10-20 01:44:19,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:44:19,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-10-20 01:44:19,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 167. [2020-10-20 01:44:19,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-20 01:44:19,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 228 transitions. [2020-10-20 01:44:19,732 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 228 transitions. Word has length 31 [2020-10-20 01:44:19,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:19,733 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 228 transitions. [2020-10-20 01:44:19,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 01:44:19,733 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 228 transitions. [2020-10-20 01:44:19,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-20 01:44:19,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:19,734 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] [2020-10-20 01:44:19,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 01:44:19,735 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:19,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:19,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1745002246, now seen corresponding path program 1 times [2020-10-20 01:44:19,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:19,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303911768] [2020-10-20 01:44:19,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:19,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:19,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:44:19,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303911768] [2020-10-20 01:44:19,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:19,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 01:44:19,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699997569] [2020-10-20 01:44:19,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 01:44:19,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:19,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 01:44:19,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 01:44:19,804 INFO L87 Difference]: Start difference. First operand 167 states and 228 transitions. Second operand 6 states. [2020-10-20 01:44:20,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:20,075 INFO L93 Difference]: Finished difference Result 582 states and 811 transitions. [2020-10-20 01:44:20,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 01:44:20,076 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-10-20 01:44:20,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:20,079 INFO L225 Difference]: With dead ends: 582 [2020-10-20 01:44:20,079 INFO L226 Difference]: Without dead ends: 421 [2020-10-20 01:44:20,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-20 01:44:20,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-10-20 01:44:20,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 176. [2020-10-20 01:44:20,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-20 01:44:20,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 235 transitions. [2020-10-20 01:44:20,105 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 235 transitions. Word has length 31 [2020-10-20 01:44:20,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:20,106 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 235 transitions. [2020-10-20 01:44:20,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 01:44:20,106 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 235 transitions. [2020-10-20 01:44:20,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-20 01:44:20,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:20,108 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] [2020-10-20 01:44:20,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 01:44:20,109 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:20,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:20,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1770472833, now seen corresponding path program 1 times [2020-10-20 01:44:20,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:20,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310829497] [2020-10-20 01:44:20,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:20,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:20,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:44:20,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310829497] [2020-10-20 01:44:20,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:20,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 01:44:20,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411468495] [2020-10-20 01:44:20,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 01:44:20,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:20,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 01:44:20,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 01:44:20,196 INFO L87 Difference]: Start difference. First operand 176 states and 235 transitions. Second operand 6 states. [2020-10-20 01:44:20,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:20,419 INFO L93 Difference]: Finished difference Result 834 states and 1114 transitions. [2020-10-20 01:44:20,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 01:44:20,420 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-10-20 01:44:20,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:20,425 INFO L225 Difference]: With dead ends: 834 [2020-10-20 01:44:20,425 INFO L226 Difference]: Without dead ends: 664 [2020-10-20 01:44:20,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-20 01:44:20,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2020-10-20 01:44:20,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 334. [2020-10-20 01:44:20,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2020-10-20 01:44:20,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 439 transitions. [2020-10-20 01:44:20,470 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 439 transitions. Word has length 34 [2020-10-20 01:44:20,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:20,471 INFO L481 AbstractCegarLoop]: Abstraction has 334 states and 439 transitions. [2020-10-20 01:44:20,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 01:44:20,471 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 439 transitions. [2020-10-20 01:44:20,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-20 01:44:20,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:20,473 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] [2020-10-20 01:44:20,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-20 01:44:20,473 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:20,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:20,474 INFO L82 PathProgramCache]: Analyzing trace with hash 4534529, now seen corresponding path program 1 times [2020-10-20 01:44:20,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:20,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306325647] [2020-10-20 01:44:20,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:20,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:20,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:44:20,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306325647] [2020-10-20 01:44:20,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:20,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 01:44:20,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989357755] [2020-10-20 01:44:20,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:44:20,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:20,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:44:20,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:44:20,543 INFO L87 Difference]: Start difference. First operand 334 states and 439 transitions. Second operand 5 states. [2020-10-20 01:44:20,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:20,746 INFO L93 Difference]: Finished difference Result 740 states and 975 transitions. [2020-10-20 01:44:20,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 01:44:20,746 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-10-20 01:44:20,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:20,750 INFO L225 Difference]: With dead ends: 740 [2020-10-20 01:44:20,750 INFO L226 Difference]: Without dead ends: 502 [2020-10-20 01:44:20,751 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-20 01:44:20,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-10-20 01:44:20,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 328. [2020-10-20 01:44:20,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2020-10-20 01:44:20,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 427 transitions. [2020-10-20 01:44:20,798 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 427 transitions. Word has length 34 [2020-10-20 01:44:20,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:20,799 INFO L481 AbstractCegarLoop]: Abstraction has 328 states and 427 transitions. [2020-10-20 01:44:20,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:44:20,799 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 427 transitions. [2020-10-20 01:44:20,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-20 01:44:20,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:20,801 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:44:20,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-20 01:44:20,802 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:20,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:20,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1946639489, now seen corresponding path program 1 times [2020-10-20 01:44:20,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:20,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542017696] [2020-10-20 01:44:20,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:20,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:20,871 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-20 01:44:20,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542017696] [2020-10-20 01:44:20,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:20,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 01:44:20,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120922651] [2020-10-20 01:44:20,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:44:20,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:20,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:44:20,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:44:20,874 INFO L87 Difference]: Start difference. First operand 328 states and 427 transitions. Second operand 5 states. [2020-10-20 01:44:20,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:20,972 INFO L93 Difference]: Finished difference Result 745 states and 973 transitions. [2020-10-20 01:44:20,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 01:44:20,973 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2020-10-20 01:44:20,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:20,976 INFO L225 Difference]: With dead ends: 745 [2020-10-20 01:44:20,977 INFO L226 Difference]: Without dead ends: 423 [2020-10-20 01:44:20,979 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-20 01:44:20,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2020-10-20 01:44:21,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 328. [2020-10-20 01:44:21,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2020-10-20 01:44:21,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 421 transitions. [2020-10-20 01:44:21,025 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 421 transitions. Word has length 51 [2020-10-20 01:44:21,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:21,025 INFO L481 AbstractCegarLoop]: Abstraction has 328 states and 421 transitions. [2020-10-20 01:44:21,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:44:21,026 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 421 transitions. [2020-10-20 01:44:21,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-20 01:44:21,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:21,028 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:44:21,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-20 01:44:21,029 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:21,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:21,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1245039615, now seen corresponding path program 1 times [2020-10-20 01:44:21,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:21,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279969552] [2020-10-20 01:44:21,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:21,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:21,120 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-20 01:44:21,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279969552] [2020-10-20 01:44:21,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:21,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 01:44:21,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567820147] [2020-10-20 01:44:21,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 01:44:21,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:21,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 01:44:21,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 01:44:21,124 INFO L87 Difference]: Start difference. First operand 328 states and 421 transitions. Second operand 4 states. [2020-10-20 01:44:21,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:21,202 INFO L93 Difference]: Finished difference Result 668 states and 867 transitions. [2020-10-20 01:44:21,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 01:44:21,203 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-10-20 01:44:21,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:21,206 INFO L225 Difference]: With dead ends: 668 [2020-10-20 01:44:21,207 INFO L226 Difference]: Without dead ends: 346 [2020-10-20 01:44:21,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:44:21,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-10-20 01:44:21,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 262. [2020-10-20 01:44:21,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-10-20 01:44:21,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 335 transitions. [2020-10-20 01:44:21,254 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 335 transitions. Word has length 51 [2020-10-20 01:44:21,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:21,254 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 335 transitions. [2020-10-20 01:44:21,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 01:44:21,255 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 335 transitions. [2020-10-20 01:44:21,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-20 01:44:21,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:21,257 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:44:21,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-20 01:44:21,257 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:21,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:21,258 INFO L82 PathProgramCache]: Analyzing trace with hash -2094788923, now seen corresponding path program 1 times [2020-10-20 01:44:21,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:21,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084530308] [2020-10-20 01:44:21,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:21,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:21,336 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-20 01:44:21,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084530308] [2020-10-20 01:44:21,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:21,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 01:44:21,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143257918] [2020-10-20 01:44:21,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 01:44:21,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:21,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 01:44:21,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 01:44:21,340 INFO L87 Difference]: Start difference. First operand 262 states and 335 transitions. Second operand 6 states. [2020-10-20 01:44:21,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:21,540 INFO L93 Difference]: Finished difference Result 714 states and 934 transitions. [2020-10-20 01:44:21,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-20 01:44:21,540 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-10-20 01:44:21,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:21,543 INFO L225 Difference]: With dead ends: 714 [2020-10-20 01:44:21,544 INFO L226 Difference]: Without dead ends: 506 [2020-10-20 01:44:21,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-20 01:44:21,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2020-10-20 01:44:21,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 262. [2020-10-20 01:44:21,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-10-20 01:44:21,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 334 transitions. [2020-10-20 01:44:21,574 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 334 transitions. Word has length 52 [2020-10-20 01:44:21,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:21,574 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 334 transitions. [2020-10-20 01:44:21,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 01:44:21,575 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 334 transitions. [2020-10-20 01:44:21,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-20 01:44:21,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:21,576 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:44:21,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-20 01:44:21,577 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:21,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:21,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1208636850, now seen corresponding path program 1 times [2020-10-20 01:44:21,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:21,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617124996] [2020-10-20 01:44:21,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:21,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:21,656 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:44:21,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617124996] [2020-10-20 01:44:21,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028958746] [2020-10-20 01:44:21,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:44:21,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:21,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 01:44:21,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:44:21,864 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:44:21,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 01:44:21,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-10-20 01:44:21,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486782305] [2020-10-20 01:44:21,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 01:44:21,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:21,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 01:44:21,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-20 01:44:21,867 INFO L87 Difference]: Start difference. First operand 262 states and 334 transitions. Second operand 6 states. [2020-10-20 01:44:22,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:22,120 INFO L93 Difference]: Finished difference Result 805 states and 1041 transitions. [2020-10-20 01:44:22,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 01:44:22,121 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2020-10-20 01:44:22,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:22,125 INFO L225 Difference]: With dead ends: 805 [2020-10-20 01:44:22,125 INFO L226 Difference]: Without dead ends: 597 [2020-10-20 01:44:22,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-10-20 01:44:22,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2020-10-20 01:44:22,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 366. [2020-10-20 01:44:22,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 366 states. [2020-10-20 01:44:22,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 471 transitions. [2020-10-20 01:44:22,173 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 471 transitions. Word has length 53 [2020-10-20 01:44:22,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:22,173 INFO L481 AbstractCegarLoop]: Abstraction has 366 states and 471 transitions. [2020-10-20 01:44:22,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 01:44:22,174 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 471 transitions. [2020-10-20 01:44:22,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-20 01:44:22,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:22,176 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:44:22,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-10-20 01:44:22,390 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:22,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:22,390 INFO L82 PathProgramCache]: Analyzing trace with hash 742788065, now seen corresponding path program 2 times [2020-10-20 01:44:22,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:22,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300889493] [2020-10-20 01:44:22,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:22,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 01:44:22,472 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 01:44:22,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 01:44:22,543 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 01:44:22,607 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 01:44:22,608 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 01:44:22,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-20 01:44:22,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 01:44:22 BoogieIcfgContainer [2020-10-20 01:44:22,772 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 01:44:22,773 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 01:44:22,773 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 01:44:22,774 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 01:44:22,775 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:44:17" (3/4) ... [2020-10-20 01:44:22,779 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 01:44:22,955 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 01:44:22,956 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 01:44:22,958 INFO L168 Benchmark]: Toolchain (without parser) took 7061.14 ms. Allocated memory was 35.7 MB in the beginning and 98.0 MB in the end (delta: 62.4 MB). Free memory was 9.2 MB in the beginning and 23.8 MB in the end (delta: -14.6 MB). Peak memory consumption was 47.7 MB. Max. memory is 14.3 GB. [2020-10-20 01:44:22,958 INFO L168 Benchmark]: CDTParser took 0.79 ms. Allocated memory is still 35.7 MB. Free memory is still 14.9 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 01:44:22,959 INFO L168 Benchmark]: CACSL2BoogieTranslator took 611.46 ms. Allocated memory was 35.7 MB in the beginning and 45.6 MB in the end (delta: 10.0 MB). Free memory was 8.2 MB in the beginning and 16.9 MB in the end (delta: -8.7 MB). Peak memory consumption was 8.1 MB. Max. memory is 14.3 GB. [2020-10-20 01:44:22,959 INFO L168 Benchmark]: Boogie Procedure Inliner took 89.64 ms. Allocated memory was 45.6 MB in the beginning and 46.7 MB in the end (delta: 1.0 MB). Free memory was 16.9 MB in the beginning and 26.5 MB in the end (delta: -9.6 MB). Peak memory consumption was 4.5 MB. Max. memory is 14.3 GB. [2020-10-20 01:44:22,959 INFO L168 Benchmark]: Boogie Preprocessor took 51.74 ms. Allocated memory is still 46.7 MB. Free memory was 26.5 MB in the beginning and 23.3 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 14.3 GB. [2020-10-20 01:44:22,960 INFO L168 Benchmark]: RCFGBuilder took 1240.22 ms. Allocated memory was 46.7 MB in the beginning and 50.9 MB in the end (delta: 4.2 MB). Free memory was 23.3 MB in the beginning and 15.9 MB in the end (delta: 7.4 MB). Peak memory consumption was 17.7 MB. Max. memory is 14.3 GB. [2020-10-20 01:44:22,960 INFO L168 Benchmark]: TraceAbstraction took 4874.23 ms. Allocated memory was 50.9 MB in the beginning and 98.0 MB in the end (delta: 47.2 MB). Free memory was 15.5 MB in the beginning and 56.6 MB in the end (delta: -41.1 MB). Peak memory consumption was 52.8 MB. Max. memory is 14.3 GB. [2020-10-20 01:44:22,961 INFO L168 Benchmark]: Witness Printer took 183.07 ms. Allocated memory is still 98.0 MB. Free memory was 56.6 MB in the beginning and 23.8 MB in the end (delta: 32.8 MB). Peak memory consumption was 32.8 MB. Max. memory is 14.3 GB. [2020-10-20 01:44:22,964 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.79 ms. Allocated memory is still 35.7 MB. Free memory is still 14.9 MB. There was no memory consumed. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 611.46 ms. Allocated memory was 35.7 MB in the beginning and 45.6 MB in the end (delta: 10.0 MB). Free memory was 8.2 MB in the beginning and 16.9 MB in the end (delta: -8.7 MB). Peak memory consumption was 8.1 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 89.64 ms. Allocated memory was 45.6 MB in the beginning and 46.7 MB in the end (delta: 1.0 MB). Free memory was 16.9 MB in the beginning and 26.5 MB in the end (delta: -9.6 MB). Peak memory consumption was 4.5 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 51.74 ms. Allocated memory is still 46.7 MB. Free memory was 26.5 MB in the beginning and 23.3 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 14.3 GB. * RCFGBuilder took 1240.22 ms. Allocated memory was 46.7 MB in the beginning and 50.9 MB in the end (delta: 4.2 MB). Free memory was 23.3 MB in the beginning and 15.9 MB in the end (delta: 7.4 MB). Peak memory consumption was 17.7 MB. Max. memory is 14.3 GB. * TraceAbstraction took 4874.23 ms. Allocated memory was 50.9 MB in the beginning and 98.0 MB in the end (delta: 47.2 MB). Free memory was 15.5 MB in the beginning and 56.6 MB in the end (delta: -41.1 MB). Peak memory consumption was 52.8 MB. Max. memory is 14.3 GB. * Witness Printer took 183.07 ms. Allocated memory is still 98.0 MB. Free memory was 56.6 MB in the beginning and 23.8 MB in the end (delta: 32.8 MB). Peak memory consumption was 32.8 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L42] int cleanupTimeShifts = 4; [L344] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L557] int pumpRunning = 0; [L558] int systemActive = 1; [L760] int waterLevel = 1; [L761] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L123] int retValue_acc ; [L124] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L947] int retValue_acc ; [L950] retValue_acc = 1 [L951] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L855] int splverifierCounter ; [L856] int tmp ; [L857] int tmp___0 ; [L858] int tmp___1 ; [L859] int tmp___2 ; [L862] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L864] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L866] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L872] tmp = __VERIFIER_nondet_int() [L874] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L778] COND TRUE waterLevel < 2 [L779] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L882] tmp___0 = __VERIFIER_nondet_int() [L884] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L892] tmp___2 = __VERIFIER_nondet_int() [L894] COND TRUE \read(tmp___2) [L755] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L564] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L571] COND TRUE \read(systemActive) [L619] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L622] COND FALSE !(\read(pumpRunning)) [L593] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L596] COND TRUE ! pumpRunning [L733] int retValue_acc ; [L734] int tmp ; [L735] int tmp___0 ; [L840] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L843] COND FALSE !(waterLevel < 2) [L847] retValue_acc = 0 [L848] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L739] tmp = isHighWaterSensorDry() [L741] COND FALSE !(\read(tmp)) [L744] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L746] retValue_acc = tmp___0 [L747] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L598] tmp = isHighWaterLevel() [L600] COND TRUE \read(tmp) [L652] int tmp ; [L677] int retValue_acc ; [L799] int retValue_acc ; [L802] retValue_acc = methaneLevelCritical [L803] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L681] retValue_acc = isMethaneLevelCritical() [L683] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L656] tmp = isMethaneAlarm() [L658] COND FALSE !(\read(tmp)) [L647] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L150] int tmp ; [L151] int tmp___0 ; [L831] int retValue_acc ; [L834] retValue_acc = waterLevel [L835] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L155] tmp = getWaterLevel() [L157] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L864] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L866] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L872] tmp = __VERIFIER_nondet_int() [L874] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L882] tmp___0 = __VERIFIER_nondet_int() [L884] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L892] tmp___2 = __VERIFIER_nondet_int() [L894] COND TRUE \read(tmp___2) [L755] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L564] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L766] COND TRUE waterLevel > 0 [L767] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L571] COND TRUE \read(systemActive) [L619] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L622] COND TRUE \read(pumpRunning) [L677] int retValue_acc ; [L799] int retValue_acc ; [L802] retValue_acc = methaneLevelCritical [L803] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L681] retValue_acc = isMethaneLevelCritical() [L683] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L624] tmp = isMethaneAlarm() [L626] COND FALSE !(\read(tmp)) [L593] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L596] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L150] int tmp ; [L151] int tmp___0 ; [L831] int retValue_acc ; [L834] retValue_acc = waterLevel [L835] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L155] tmp = getWaterLevel() [L157] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L864] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L866] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L872] tmp = __VERIFIER_nondet_int() [L874] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L882] tmp___0 = __VERIFIER_nondet_int() [L884] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L892] tmp___2 = __VERIFIER_nondet_int() [L894] COND TRUE \read(tmp___2) [L755] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L564] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L766] COND TRUE waterLevel > 0 [L767] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L571] COND TRUE \read(systemActive) [L619] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L622] COND TRUE \read(pumpRunning) [L677] int retValue_acc ; [L799] int retValue_acc ; [L802] retValue_acc = methaneLevelCritical [L803] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L681] retValue_acc = isMethaneLevelCritical() [L683] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L624] tmp = isMethaneAlarm() [L626] COND FALSE !(\read(tmp)) [L593] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L596] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L150] int tmp ; [L151] int tmp___0 ; [L831] int retValue_acc ; [L834] retValue_acc = waterLevel [L835] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L155] tmp = getWaterLevel() [L157] COND TRUE tmp == 0 [L688] int retValue_acc ; [L691] retValue_acc = pumpRunning [L692] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L159] tmp___0 = isPumpRunning() [L161] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L3] __assert_fail("0", "minepump_spec4_product46.cil.c", 3, "reach_error") VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 132 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.6s, OverallIterations: 15, TraceHistogramMax: 3, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1555 SDtfs, 2199 SDslu, 2569 SDs, 0 SdLazy, 378 SolverSat, 88 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 154 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=366occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 14 MinimizatonAttempts, 1657 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 602 NumberOfCodeBlocks, 602 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 515 ConstructedInterpolants, 0 QuantifiedInterpolants, 38105 SizeOfPredicates, 4 NumberOfNonLiveVariables, 436 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 15 InterpolantComputations, 13 PerfectInterpolantSequences, 64/70 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...