./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_8112c585-a2c5-4e69-a423-b9b84061cd7c/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_8112c585-a2c5-4e69-a423-b9b84061cd7c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_8112c585-a2c5-4e69-a423-b9b84061cd7c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_8112c585-a2c5-4e69-a423-b9b84061cd7c/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_8112c585-a2c5-4e69-a423-b9b84061cd7c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_8112c585-a2c5-4e69-a423-b9b84061cd7c/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a7dbd4e152ee971b4407c7068d06d15a4635d510 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.1.24-cad4683 [2019-10-22 09:02:09,581 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 09:02:09,582 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 09:02:09,592 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 09:02:09,592 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 09:02:09,594 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 09:02:09,595 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 09:02:09,597 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 09:02:09,600 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 09:02:09,602 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 09:02:09,603 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 09:02:09,605 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 09:02:09,610 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 09:02:09,610 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 09:02:09,611 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 09:02:09,612 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 09:02:09,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 09:02:09,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 09:02:09,614 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 09:02:09,615 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 09:02:09,616 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 09:02:09,617 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 09:02:09,618 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 09:02:09,618 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 09:02:09,620 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 09:02:09,620 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 09:02:09,621 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 09:02:09,622 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 09:02:09,622 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 09:02:09,623 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 09:02:09,623 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 09:02:09,623 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 09:02:09,624 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 09:02:09,624 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 09:02:09,625 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 09:02:09,625 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 09:02:09,626 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 09:02:09,626 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 09:02:09,626 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 09:02:09,626 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 09:02:09,627 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 09:02:09,628 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_8112c585-a2c5-4e69-a423-b9b84061cd7c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 09:02:09,640 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 09:02:09,640 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 09:02:09,641 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 09:02:09,641 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 09:02:09,642 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 09:02:09,642 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 09:02:09,642 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 09:02:09,642 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 09:02:09,642 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 09:02:09,642 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 09:02:09,643 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 09:02:09,643 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 09:02:09,643 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 09:02:09,651 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 09:02:09,652 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 09:02:09,652 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 09:02:09,652 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 09:02:09,652 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 09:02:09,652 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 09:02:09,652 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 09:02:09,653 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 09:02:09,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 09:02:09,653 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 09:02:09,653 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 09:02:09,653 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 09:02:09,654 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 09:02:09,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 09:02:09,654 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 09:02:09,654 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 -> /tmp/vcloud-vcloud-master/worker/working_dir_8112c585-a2c5-4e69-a423-b9b84061cd7c/bin/uautomizer 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(__VERIFIER_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 -> a7dbd4e152ee971b4407c7068d06d15a4635d510 [2019-10-22 09:02:09,689 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 09:02:09,699 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 09:02:09,703 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 09:02:09,705 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 09:02:09,706 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 09:02:09,706 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_8112c585-a2c5-4e69-a423-b9b84061cd7c/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c [2019-10-22 09:02:09,758 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8112c585-a2c5-4e69-a423-b9b84061cd7c/bin/uautomizer/data/c1f5ae685/f3cfc16c72914dcb9aa46c3cc3b1d409/FLAG264886f3f [2019-10-22 09:02:10,196 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 09:02:10,197 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_8112c585-a2c5-4e69-a423-b9b84061cd7c/sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c [2019-10-22 09:02:10,207 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8112c585-a2c5-4e69-a423-b9b84061cd7c/bin/uautomizer/data/c1f5ae685/f3cfc16c72914dcb9aa46c3cc3b1d409/FLAG264886f3f [2019-10-22 09:02:10,221 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_8112c585-a2c5-4e69-a423-b9b84061cd7c/bin/uautomizer/data/c1f5ae685/f3cfc16c72914dcb9aa46c3cc3b1d409 [2019-10-22 09:02:10,224 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 09:02:10,225 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 09:02:10,231 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 09:02:10,231 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 09:02:10,234 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 09:02:10,235 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:02:10" (1/1) ... [2019-10-22 09:02:10,237 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f721f76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:10, skipping insertion in model container [2019-10-22 09:02:10,237 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:02:10" (1/1) ... [2019-10-22 09:02:10,243 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 09:02:10,293 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 09:02:10,638 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:02:10,650 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 09:02:10,728 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:02:10,757 INFO L192 MainTranslator]: Completed translation [2019-10-22 09:02:10,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:10 WrapperNode [2019-10-22 09:02:10,757 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 09:02:10,758 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 09:02:10,758 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 09:02:10,758 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 09:02:10,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:10" (1/1) ... [2019-10-22 09:02:10,780 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:10" (1/1) ... [2019-10-22 09:02:10,813 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 09:02:10,814 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 09:02:10,814 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 09:02:10,814 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 09:02:10,823 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:10" (1/1) ... [2019-10-22 09:02:10,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:10" (1/1) ... [2019-10-22 09:02:10,827 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:10" (1/1) ... [2019-10-22 09:02:10,827 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:10" (1/1) ... [2019-10-22 09:02:10,836 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:10" (1/1) ... [2019-10-22 09:02:10,842 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:10" (1/1) ... [2019-10-22 09:02:10,844 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:10" (1/1) ... [2019-10-22 09:02:10,848 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 09:02:10,849 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 09:02:10,849 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 09:02:10,849 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 09:02:10,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8112c585-a2c5-4e69-a423-b9b84061cd7c/bin/uautomizer/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 [2019-10-22 09:02:10,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 09:02:10,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-22 09:02:10,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 09:02:10,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 09:02:11,586 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 09:02:11,586 INFO L284 CfgBuilder]: Removed 162 assume(true) statements. [2019-10-22 09:02:11,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:11 BoogieIcfgContainer [2019-10-22 09:02:11,588 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 09:02:11,588 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 09:02:11,589 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 09:02:11,591 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 09:02:11,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 09:02:10" (1/3) ... [2019-10-22 09:02:11,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@660aa0ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:02:11, skipping insertion in model container [2019-10-22 09:02:11,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:10" (2/3) ... [2019-10-22 09:02:11,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@660aa0ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:02:11, skipping insertion in model container [2019-10-22 09:02:11,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:11" (3/3) ... [2019-10-22 09:02:11,594 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product40.cil.c [2019-10-22 09:02:11,603 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 09:02:11,612 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-22 09:02:11,622 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-22 09:02:11,646 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 09:02:11,646 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 09:02:11,646 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 09:02:11,646 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 09:02:11,646 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 09:02:11,646 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 09:02:11,647 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 09:02:11,647 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 09:02:11,661 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states. [2019-10-22 09:02:11,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 09:02:11,668 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:11,668 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:11,670 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:11,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:11,677 INFO L82 PathProgramCache]: Analyzing trace with hash 2074315904, now seen corresponding path program 1 times [2019-10-22 09:02:11,683 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:11,683 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033830933] [2019-10-22 09:02:11,683 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:11,683 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:11,684 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:11,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:11,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:11,857 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033830933] [2019-10-22 09:02:11,857 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:11,858 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 09:02:11,858 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963087498] [2019-10-22 09:02:11,862 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 09:02:11,862 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:11,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 09:02:11,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 09:02:11,875 INFO L87 Difference]: Start difference. First operand 113 states. Second operand 2 states. [2019-10-22 09:02:11,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:11,901 INFO L93 Difference]: Finished difference Result 220 states and 335 transitions. [2019-10-22 09:02:11,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 09:02:11,902 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-10-22 09:02:11,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:11,912 INFO L225 Difference]: With dead ends: 220 [2019-10-22 09:02:11,912 INFO L226 Difference]: Without dead ends: 109 [2019-10-22 09:02:11,915 INFO L600 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 [2019-10-22 09:02:11,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2019-10-22 09:02:11,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2019-10-22 09:02:11,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2019-10-22 09:02:11,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 159 transitions. [2019-10-22 09:02:11,949 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 159 transitions. Word has length 16 [2019-10-22 09:02:11,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:11,950 INFO L462 AbstractCegarLoop]: Abstraction has 109 states and 159 transitions. [2019-10-22 09:02:11,950 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 09:02:11,950 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 159 transitions. [2019-10-22 09:02:11,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 09:02:11,951 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:11,951 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:11,951 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:11,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:11,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1027559007, now seen corresponding path program 1 times [2019-10-22 09:02:11,952 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:11,952 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743952641] [2019-10-22 09:02:11,952 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:11,952 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:11,952 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:12,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:12,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:12,071 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743952641] [2019-10-22 09:02:12,071 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:12,071 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 09:02:12,071 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180039770] [2019-10-22 09:02:12,073 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 09:02:12,073 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:12,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 09:02:12,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:02:12,074 INFO L87 Difference]: Start difference. First operand 109 states and 159 transitions. Second operand 3 states. [2019-10-22 09:02:12,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:12,084 INFO L93 Difference]: Finished difference Result 109 states and 159 transitions. [2019-10-22 09:02:12,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 09:02:12,085 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-10-22 09:02:12,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:12,086 INFO L225 Difference]: With dead ends: 109 [2019-10-22 09:02:12,086 INFO L226 Difference]: Without dead ends: 47 [2019-10-22 09:02:12,087 INFO L600 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 [2019-10-22 09:02:12,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-10-22 09:02:12,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2019-10-22 09:02:12,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-10-22 09:02:12,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 68 transitions. [2019-10-22 09:02:12,091 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 68 transitions. Word has length 17 [2019-10-22 09:02:12,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:12,092 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 68 transitions. [2019-10-22 09:02:12,092 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 09:02:12,092 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 68 transitions. [2019-10-22 09:02:12,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-22 09:02:12,093 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:12,093 INFO L380 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] [2019-10-22 09:02:12,093 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:12,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:12,094 INFO L82 PathProgramCache]: Analyzing trace with hash 109011716, now seen corresponding path program 1 times [2019-10-22 09:02:12,094 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:12,094 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706616284] [2019-10-22 09:02:12,094 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:12,094 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:12,094 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:12,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:12,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:12,167 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706616284] [2019-10-22 09:02:12,167 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:12,167 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 09:02:12,167 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271705844] [2019-10-22 09:02:12,168 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 09:02:12,168 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:12,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 09:02:12,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:02:12,168 INFO L87 Difference]: Start difference. First operand 47 states and 68 transitions. Second operand 5 states. [2019-10-22 09:02:12,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:12,252 INFO L93 Difference]: Finished difference Result 111 states and 164 transitions. [2019-10-22 09:02:12,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 09:02:12,253 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-10-22 09:02:12,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:12,253 INFO L225 Difference]: With dead ends: 111 [2019-10-22 09:02:12,254 INFO L226 Difference]: Without dead ends: 70 [2019-10-22 09:02:12,254 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-22 09:02:12,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2019-10-22 09:02:12,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66. [2019-10-22 09:02:12,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-10-22 09:02:12,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 97 transitions. [2019-10-22 09:02:12,263 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 97 transitions. Word has length 22 [2019-10-22 09:02:12,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:12,263 INFO L462 AbstractCegarLoop]: Abstraction has 66 states and 97 transitions. [2019-10-22 09:02:12,264 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 09:02:12,264 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 97 transitions. [2019-10-22 09:02:12,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-22 09:02:12,265 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:12,265 INFO L380 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] [2019-10-22 09:02:12,265 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:12,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:12,265 INFO L82 PathProgramCache]: Analyzing trace with hash 60563277, now seen corresponding path program 1 times [2019-10-22 09:02:12,266 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:12,266 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911421509] [2019-10-22 09:02:12,266 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:12,266 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:12,266 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:12,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:12,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:12,315 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911421509] [2019-10-22 09:02:12,315 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:12,315 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 09:02:12,315 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851537474] [2019-10-22 09:02:12,316 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 09:02:12,316 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:12,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 09:02:12,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:02:12,317 INFO L87 Difference]: Start difference. First operand 66 states and 97 transitions. Second operand 3 states. [2019-10-22 09:02:12,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:12,381 INFO L93 Difference]: Finished difference Result 147 states and 218 transitions. [2019-10-22 09:02:12,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 09:02:12,381 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-10-22 09:02:12,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:12,382 INFO L225 Difference]: With dead ends: 147 [2019-10-22 09:02:12,382 INFO L226 Difference]: Without dead ends: 87 [2019-10-22 09:02:12,383 INFO L600 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 [2019-10-22 09:02:12,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2019-10-22 09:02:12,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2019-10-22 09:02:12,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2019-10-22 09:02:12,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 121 transitions. [2019-10-22 09:02:12,393 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 121 transitions. Word has length 24 [2019-10-22 09:02:12,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:12,393 INFO L462 AbstractCegarLoop]: Abstraction has 85 states and 121 transitions. [2019-10-22 09:02:12,393 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 09:02:12,394 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 121 transitions. [2019-10-22 09:02:12,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-22 09:02:12,394 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:12,394 INFO L380 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] [2019-10-22 09:02:12,395 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:12,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:12,395 INFO L82 PathProgramCache]: Analyzing trace with hash -445763815, now seen corresponding path program 1 times [2019-10-22 09:02:12,395 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:12,395 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480677215] [2019-10-22 09:02:12,395 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:12,396 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:12,396 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:12,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:12,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:12,505 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480677215] [2019-10-22 09:02:12,506 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:12,506 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 09:02:12,506 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003059773] [2019-10-22 09:02:12,506 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 09:02:12,507 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:12,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 09:02:12,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-22 09:02:12,508 INFO L87 Difference]: Start difference. First operand 85 states and 121 transitions. Second operand 8 states. [2019-10-22 09:02:12,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:12,812 INFO L93 Difference]: Finished difference Result 537 states and 787 transitions. [2019-10-22 09:02:12,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-22 09:02:12,813 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2019-10-22 09:02:12,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:12,815 INFO L225 Difference]: With dead ends: 537 [2019-10-22 09:02:12,816 INFO L226 Difference]: Without dead ends: 458 [2019-10-22 09:02:12,816 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2019-10-22 09:02:12,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2019-10-22 09:02:12,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 212. [2019-10-22 09:02:12,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2019-10-22 09:02:12,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 296 transitions. [2019-10-22 09:02:12,845 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 296 transitions. Word has length 25 [2019-10-22 09:02:12,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:12,846 INFO L462 AbstractCegarLoop]: Abstraction has 212 states and 296 transitions. [2019-10-22 09:02:12,846 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 09:02:12,846 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 296 transitions. [2019-10-22 09:02:12,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-10-22 09:02:12,848 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:12,848 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:12,848 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:12,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:12,849 INFO L82 PathProgramCache]: Analyzing trace with hash 371468141, now seen corresponding path program 1 times [2019-10-22 09:02:12,849 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:12,849 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076185078] [2019-10-22 09:02:12,849 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:12,849 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:12,849 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:12,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:12,937 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-22 09:02:12,937 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076185078] [2019-10-22 09:02:12,937 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:12,937 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 09:02:12,938 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501617805] [2019-10-22 09:02:12,938 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 09:02:12,938 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:12,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 09:02:12,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:02:12,939 INFO L87 Difference]: Start difference. First operand 212 states and 296 transitions. Second operand 5 states. [2019-10-22 09:02:13,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:13,068 INFO L93 Difference]: Finished difference Result 498 states and 707 transitions. [2019-10-22 09:02:13,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 09:02:13,068 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2019-10-22 09:02:13,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:13,070 INFO L225 Difference]: With dead ends: 498 [2019-10-22 09:02:13,071 INFO L226 Difference]: Without dead ends: 496 [2019-10-22 09:02:13,071 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-22 09:02:13,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2019-10-22 09:02:13,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 212. [2019-10-22 09:02:13,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2019-10-22 09:02:13,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 294 transitions. [2019-10-22 09:02:13,107 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 294 transitions. Word has length 41 [2019-10-22 09:02:13,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:13,107 INFO L462 AbstractCegarLoop]: Abstraction has 212 states and 294 transitions. [2019-10-22 09:02:13,107 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 09:02:13,107 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 294 transitions. [2019-10-22 09:02:13,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-10-22 09:02:13,109 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:13,109 INFO L380 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] [2019-10-22 09:02:13,109 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:13,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:13,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1694698835, now seen corresponding path program 1 times [2019-10-22 09:02:13,110 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:13,110 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551690830] [2019-10-22 09:02:13,110 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:13,110 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:13,110 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:13,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:13,184 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-22 09:02:13,185 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551690830] [2019-10-22 09:02:13,185 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:13,185 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 09:02:13,185 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052652311] [2019-10-22 09:02:13,185 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 09:02:13,186 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:13,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 09:02:13,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:02:13,186 INFO L87 Difference]: Start difference. First operand 212 states and 294 transitions. Second operand 5 states. [2019-10-22 09:02:13,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:13,273 INFO L93 Difference]: Finished difference Result 647 states and 890 transitions. [2019-10-22 09:02:13,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 09:02:13,273 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2019-10-22 09:02:13,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:13,275 INFO L225 Difference]: With dead ends: 647 [2019-10-22 09:02:13,275 INFO L226 Difference]: Without dead ends: 441 [2019-10-22 09:02:13,276 INFO L600 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 [2019-10-22 09:02:13,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2019-10-22 09:02:13,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 227. [2019-10-22 09:02:13,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2019-10-22 09:02:13,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 309 transitions. [2019-10-22 09:02:13,305 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 309 transitions. Word has length 48 [2019-10-22 09:02:13,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:13,306 INFO L462 AbstractCegarLoop]: Abstraction has 227 states and 309 transitions. [2019-10-22 09:02:13,306 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 09:02:13,306 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 309 transitions. [2019-10-22 09:02:13,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-10-22 09:02:13,309 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:13,311 INFO L380 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] [2019-10-22 09:02:13,312 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:13,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:13,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1301671825, now seen corresponding path program 1 times [2019-10-22 09:02:13,313 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:13,313 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866369636] [2019-10-22 09:02:13,314 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:13,314 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:13,314 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:13,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:13,379 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-22 09:02:13,379 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866369636] [2019-10-22 09:02:13,380 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:13,380 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-22 09:02:13,380 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72442123] [2019-10-22 09:02:13,381 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 09:02:13,381 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:13,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 09:02:13,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:02:13,382 INFO L87 Difference]: Start difference. First operand 227 states and 309 transitions. Second operand 6 states. [2019-10-22 09:02:13,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:13,516 INFO L93 Difference]: Finished difference Result 604 states and 821 transitions. [2019-10-22 09:02:13,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 09:02:13,517 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 48 [2019-10-22 09:02:13,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:13,518 INFO L225 Difference]: With dead ends: 604 [2019-10-22 09:02:13,518 INFO L226 Difference]: Without dead ends: 383 [2019-10-22 09:02:13,519 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2019-10-22 09:02:13,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2019-10-22 09:02:13,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 205. [2019-10-22 09:02:13,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2019-10-22 09:02:13,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 274 transitions. [2019-10-22 09:02:13,541 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 274 transitions. Word has length 48 [2019-10-22 09:02:13,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:13,542 INFO L462 AbstractCegarLoop]: Abstraction has 205 states and 274 transitions. [2019-10-22 09:02:13,542 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 09:02:13,542 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 274 transitions. [2019-10-22 09:02:13,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-10-22 09:02:13,543 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:13,546 INFO L380 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] [2019-10-22 09:02:13,547 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:13,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:13,547 INFO L82 PathProgramCache]: Analyzing trace with hash -103400707, now seen corresponding path program 1 times [2019-10-22 09:02:13,547 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:13,547 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022272101] [2019-10-22 09:02:13,547 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:13,548 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:13,548 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:13,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:13,618 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:13,618 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022272101] [2019-10-22 09:02:13,618 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863335637] [2019-10-22 09:02:13,619 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8112c585-a2c5-4e69-a423-b9b84061cd7c/bin/uautomizer/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 [2019-10-22 09:02:13,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:13,721 INFO L256 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 09:02:13,727 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:13,768 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:13,768 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:02:13,768 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2019-10-22 09:02:13,768 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54596967] [2019-10-22 09:02:13,769 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 09:02:13,769 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:13,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 09:02:13,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-22 09:02:13,773 INFO L87 Difference]: Start difference. First operand 205 states and 274 transitions. Second operand 8 states. [2019-10-22 09:02:13,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:13,996 INFO L93 Difference]: Finished difference Result 715 states and 980 transitions. [2019-10-22 09:02:13,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-22 09:02:13,998 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 50 [2019-10-22 09:02:13,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:13,999 INFO L225 Difference]: With dead ends: 715 [2019-10-22 09:02:14,000 INFO L226 Difference]: Without dead ends: 558 [2019-10-22 09:02:14,000 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2019-10-22 09:02:14,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2019-10-22 09:02:14,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 268. [2019-10-22 09:02:14,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2019-10-22 09:02:14,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 357 transitions. [2019-10-22 09:02:14,036 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 357 transitions. Word has length 50 [2019-10-22 09:02:14,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:14,036 INFO L462 AbstractCegarLoop]: Abstraction has 268 states and 357 transitions. [2019-10-22 09:02:14,036 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 09:02:14,036 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 357 transitions. [2019-10-22 09:02:14,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-10-22 09:02:14,037 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:14,037 INFO L380 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] [2019-10-22 09:02:14,238 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:02:14,238 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:14,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:14,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1377844072, now seen corresponding path program 2 times [2019-10-22 09:02:14,239 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:14,239 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669815059] [2019-10-22 09:02:14,239 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:14,239 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:14,239 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:14,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:14,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:14,824 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:14,825 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 09:02:14,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 09:02:14 BoogieIcfgContainer [2019-10-22 09:02:14,963 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 09:02:14,963 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 09:02:14,963 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 09:02:14,963 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 09:02:14,964 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:11" (3/4) ... [2019-10-22 09:02:14,966 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 09:02:15,095 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_8112c585-a2c5-4e69-a423-b9b84061cd7c/bin/uautomizer/witness.graphml [2019-10-22 09:02:15,095 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 09:02:15,097 INFO L168 Benchmark]: Toolchain (without parser) took 4871.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 220.7 MB). Free memory was 939.4 MB in the beginning and 875.7 MB in the end (delta: 63.7 MB). Peak memory consumption was 284.4 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:15,097 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:02:15,097 INFO L168 Benchmark]: CACSL2BoogieTranslator took 526.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -190.5 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:15,097 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:15,098 INFO L168 Benchmark]: Boogie Preprocessor took 34.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:15,098 INFO L168 Benchmark]: RCFGBuilder took 739.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 60.4 MB). Peak memory consumption was 60.4 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:15,098 INFO L168 Benchmark]: TraceAbstraction took 3374.32 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 69.2 MB). Free memory was 1.1 GB in the beginning and 908.7 MB in the end (delta: 152.6 MB). Peak memory consumption was 221.8 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:15,098 INFO L168 Benchmark]: Witness Printer took 132.14 ms. Allocated memory is still 1.2 GB. Free memory was 908.7 MB in the beginning and 875.7 MB in the end (delta: 33.0 MB). Peak memory consumption was 33.0 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:15,100 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 526.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -190.5 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 55.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 34.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 739.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 60.4 MB). Peak memory consumption was 60.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3374.32 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 69.2 MB). Free memory was 1.1 GB in the beginning and 908.7 MB in the end (delta: 152.6 MB). Peak memory consumption was 221.8 MB. Max. memory is 11.5 GB. * Witness Printer took 132.14 ms. Allocated memory is still 1.2 GB. Free memory was 908.7 MB in the beginning and 875.7 MB in the end (delta: 33.0 MB). Peak memory consumption was 33.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 329]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L123] int pumpRunning = 0; [L124] int systemActive = 1; [L334] int cleanupTimeShifts = 4; [L434] int waterLevel = 1; [L435] int methaneLevelCritical = 0; [L697] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L410] int retValue_acc ; [L411] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L946] int retValue_acc ; [L949] retValue_acc = 1 [L950] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L417] tmp = valid_product() [L419] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L47] int splverifierCounter ; [L48] int tmp ; [L49] int tmp___0 ; [L50] int tmp___1 ; [L51] int tmp___2 ; [L54] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L56] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L58] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L64] tmp = __VERIFIER_nondet_int() [L66] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L452] COND TRUE waterLevel < 2 [L453] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND TRUE \read(tmp___2) [L320] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L131] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L138] COND TRUE \read(systemActive) [L186] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L189] COND FALSE !(\read(pumpRunning)) [L160] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L163] COND TRUE ! pumpRunning [L283] int retValue_acc ; [L284] int tmp ; [L285] int tmp___0 ; [L514] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L517] COND FALSE !(waterLevel < 2) [L521] retValue_acc = 0 [L522] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L289] tmp = isHighWaterSensorDry() [L291] COND FALSE !(\read(tmp)) [L294] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L296] retValue_acc = tmp___0 [L297] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L165] tmp = isHighWaterLevel() [L167] COND TRUE \read(tmp) [L214] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L895] int tmp ; [L896] int tmp___0 ; [L505] int retValue_acc ; [L508] retValue_acc = waterLevel [L509] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L900] tmp = getWaterLevel() [L902] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L56] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L58] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L64] tmp = __VERIFIER_nondet_int() [L66] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND TRUE \read(tmp___2) [L320] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L131] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L440] COND TRUE waterLevel > 0 [L441] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L138] COND TRUE \read(systemActive) [L186] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L189] COND TRUE \read(pumpRunning) [L227] int retValue_acc ; [L473] int retValue_acc ; [L476] retValue_acc = methaneLevelCritical [L477] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L231] retValue_acc = isMethaneLevelCritical() [L233] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L191] tmp = isMethaneAlarm() [L193] COND FALSE !(\read(tmp)) [L160] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L163] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L895] int tmp ; [L896] int tmp___0 ; [L505] int retValue_acc ; [L508] retValue_acc = waterLevel [L509] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L900] tmp = getWaterLevel() [L902] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L56] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L58] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L64] tmp = __VERIFIER_nondet_int() [L66] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND TRUE \read(tmp___2) [L320] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L131] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L440] COND TRUE waterLevel > 0 [L441] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L138] COND TRUE \read(systemActive) [L186] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L189] COND TRUE \read(pumpRunning) [L227] int retValue_acc ; [L473] int retValue_acc ; [L476] retValue_acc = methaneLevelCritical [L477] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L231] retValue_acc = isMethaneLevelCritical() [L233] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L191] tmp = isMethaneAlarm() [L193] COND FALSE !(\read(tmp)) [L160] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L163] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L895] int tmp ; [L896] int tmp___0 ; [L505] int retValue_acc ; [L508] retValue_acc = waterLevel [L509] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L900] tmp = getWaterLevel() [L902] COND TRUE tmp == 0 [L238] int retValue_acc ; [L241] retValue_acc = pumpRunning [L242] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L904] tmp___0 = isPumpRunning() [L906] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L329] __VERIFIER_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 113 locations, 3 error locations. Result: UNSAFE, OverallTime: 3.3s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 911 SDtfs, 1783 SDslu, 1953 SDs, 0 SdLazy, 309 SolverSat, 76 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 131 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=268occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 1218 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 410 NumberOfCodeBlocks, 410 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 331 ConstructedInterpolants, 0 QuantifiedInterpolants, 24581 SizeOfPredicates, 4 NumberOfNonLiveVariables, 397 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 10 InterpolantComputations, 8 PerfectInterpolantSequences, 65/71 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...