./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product56.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_0943dd90-2905-429a-ace5-1c3db899ea9d/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_0943dd90-2905-429a-ace5-1c3db899ea9d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0943dd90-2905-429a-ace5-1c3db899ea9d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0943dd90-2905-429a-ace5-1c3db899ea9d/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product56.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_0943dd90-2905-429a-ace5-1c3db899ea9d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0943dd90-2905-429a-ace5-1c3db899ea9d/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 525453629ce87b69ed1d4100e13fdb9e0c8a872a ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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-f470102 [2019-12-07 15:21:11,022 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 15:21:11,023 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 15:21:11,031 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 15:21:11,031 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 15:21:11,032 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 15:21:11,033 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 15:21:11,034 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 15:21:11,035 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 15:21:11,036 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 15:21:11,037 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 15:21:11,037 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 15:21:11,038 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 15:21:11,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 15:21:11,039 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 15:21:11,040 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 15:21:11,040 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 15:21:11,041 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 15:21:11,042 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 15:21:11,044 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 15:21:11,045 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 15:21:11,045 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 15:21:11,046 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 15:21:11,047 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 15:21:11,048 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 15:21:11,048 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 15:21:11,048 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 15:21:11,049 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 15:21:11,049 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 15:21:11,050 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 15:21:11,050 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 15:21:11,050 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 15:21:11,051 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 15:21:11,051 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 15:21:11,052 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 15:21:11,052 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 15:21:11,052 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 15:21:11,052 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 15:21:11,052 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 15:21:11,053 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 15:21:11,053 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 15:21:11,054 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0943dd90-2905-429a-ace5-1c3db899ea9d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 15:21:11,063 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 15:21:11,064 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 15:21:11,064 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 15:21:11,065 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 15:21:11,065 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 15:21:11,065 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 15:21:11,065 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 15:21:11,065 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 15:21:11,065 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 15:21:11,065 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 15:21:11,065 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 15:21:11,066 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 15:21:11,066 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 15:21:11,066 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 15:21:11,066 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 15:21:11,066 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 15:21:11,066 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 15:21:11,066 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 15:21:11,067 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 15:21:11,067 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 15:21:11,067 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 15:21:11,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 15:21:11,067 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 15:21:11,067 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 15:21:11,067 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 15:21:11,067 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 15:21:11,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 15:21:11,068 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 15:21:11,068 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 15:21:11,068 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/run_dir_0943dd90-2905-429a-ace5-1c3db899ea9d/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 -> 525453629ce87b69ed1d4100e13fdb9e0c8a872a [2019-12-07 15:21:11,166 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 15:21:11,173 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 15:21:11,175 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 15:21:11,176 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 15:21:11,177 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 15:21:11,177 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0943dd90-2905-429a-ace5-1c3db899ea9d/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec3_product56.cil.c [2019-12-07 15:21:11,214 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0943dd90-2905-429a-ace5-1c3db899ea9d/bin/uautomizer/data/a95434c33/96f3646c9db348b58b464ecd20e8db35/FLAG8bbfcdd4f [2019-12-07 15:21:11,657 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 15:21:11,658 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0943dd90-2905-429a-ace5-1c3db899ea9d/sv-benchmarks/c/product-lines/minepump_spec3_product56.cil.c [2019-12-07 15:21:11,667 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0943dd90-2905-429a-ace5-1c3db899ea9d/bin/uautomizer/data/a95434c33/96f3646c9db348b58b464ecd20e8db35/FLAG8bbfcdd4f [2019-12-07 15:21:11,675 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0943dd90-2905-429a-ace5-1c3db899ea9d/bin/uautomizer/data/a95434c33/96f3646c9db348b58b464ecd20e8db35 [2019-12-07 15:21:11,677 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 15:21:11,678 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 15:21:11,679 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 15:21:11,679 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 15:21:11,681 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 15:21:11,682 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:21:11" (1/1) ... [2019-12-07 15:21:11,683 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@581b80cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:21:11, skipping insertion in model container [2019-12-07 15:21:11,684 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:21:11" (1/1) ... [2019-12-07 15:21:11,688 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 15:21:11,715 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 15:21:11,937 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:21:11,945 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 15:21:11,995 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:21:12,017 INFO L208 MainTranslator]: Completed translation [2019-12-07 15:21:12,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:21:12 WrapperNode [2019-12-07 15:21:12,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 15:21:12,018 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 15:21:12,018 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 15:21:12,018 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 15:21:12,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:21:12" (1/1) ... [2019-12-07 15:21:12,036 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:21:12" (1/1) ... [2019-12-07 15:21:12,070 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 15:21:12,070 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 15:21:12,070 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 15:21:12,070 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 15:21:12,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:21:12" (1/1) ... [2019-12-07 15:21:12,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:21:12" (1/1) ... [2019-12-07 15:21:12,082 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:21:12" (1/1) ... [2019-12-07 15:21:12,082 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:21:12" (1/1) ... [2019-12-07 15:21:12,095 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:21:12" (1/1) ... [2019-12-07 15:21:12,103 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:21:12" (1/1) ... [2019-12-07 15:21:12,106 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:21:12" (1/1) ... [2019-12-07 15:21:12,110 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 15:21:12,111 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 15:21:12,111 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 15:21:12,111 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 15:21:12,111 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:21:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0943dd90-2905-429a-ace5-1c3db899ea9d/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 [2019-12-07 15:21:12,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 15:21:12,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-12-07 15:21:12,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 15:21:12,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 15:21:12,695 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 15:21:12,696 INFO L287 CfgBuilder]: Removed 288 assume(true) statements. [2019-12-07 15:21:12,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:21:12 BoogieIcfgContainer [2019-12-07 15:21:12,697 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 15:21:12,697 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 15:21:12,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 15:21:12,700 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 15:21:12,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 03:21:11" (1/3) ... [2019-12-07 15:21:12,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c0fe6cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:21:12, skipping insertion in model container [2019-12-07 15:21:12,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:21:12" (2/3) ... [2019-12-07 15:21:12,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c0fe6cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:21:12, skipping insertion in model container [2019-12-07 15:21:12,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:21:12" (3/3) ... [2019-12-07 15:21:12,702 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product56.cil.c [2019-12-07 15:21:12,709 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 15:21:12,714 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-12-07 15:21:12,723 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-12-07 15:21:12,742 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 15:21:12,742 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 15:21:12,742 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 15:21:12,742 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 15:21:12,742 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 15:21:12,742 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 15:21:12,742 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 15:21:12,743 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 15:21:12,757 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states. [2019-12-07 15:21:12,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-12-07 15:21:12,762 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:21:12,763 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:21:12,763 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:21:12,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:21:12,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1618500051, now seen corresponding path program 1 times [2019-12-07 15:21:12,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:21:12,773 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547807954] [2019-12-07 15:21:12,773 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:21:12,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:21:12,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:21:12,923 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547807954] [2019-12-07 15:21:12,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:21:12,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 15:21:12,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427838942] [2019-12-07 15:21:12,927 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 15:21:12,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:21:12,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 15:21:12,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 15:21:12,938 INFO L87 Difference]: Start difference. First operand 197 states. Second operand 2 states. [2019-12-07 15:21:12,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:21:12,965 INFO L93 Difference]: Finished difference Result 388 states and 593 transitions. [2019-12-07 15:21:12,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 15:21:12,966 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2019-12-07 15:21:12,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:21:12,975 INFO L225 Difference]: With dead ends: 388 [2019-12-07 15:21:12,975 INFO L226 Difference]: Without dead ends: 193 [2019-12-07 15:21:12,978 INFO L630 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 [2019-12-07 15:21:12,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2019-12-07 15:21:13,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2019-12-07 15:21:13,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2019-12-07 15:21:13,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 288 transitions. [2019-12-07 15:21:13,014 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 288 transitions. Word has length 18 [2019-12-07 15:21:13,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:21:13,014 INFO L462 AbstractCegarLoop]: Abstraction has 193 states and 288 transitions. [2019-12-07 15:21:13,014 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 15:21:13,014 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 288 transitions. [2019-12-07 15:21:13,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-07 15:21:13,015 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:21:13,015 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:21:13,015 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:21:13,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:21:13,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1765436492, now seen corresponding path program 1 times [2019-12-07 15:21:13,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:21:13,016 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178837888] [2019-12-07 15:21:13,016 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:21:13,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:21:13,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:21:13,083 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178837888] [2019-12-07 15:21:13,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:21:13,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 15:21:13,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363634437] [2019-12-07 15:21:13,084 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 15:21:13,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:21:13,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 15:21:13,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:21:13,085 INFO L87 Difference]: Start difference. First operand 193 states and 288 transitions. Second operand 3 states. [2019-12-07 15:21:13,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:21:13,096 INFO L93 Difference]: Finished difference Result 193 states and 288 transitions. [2019-12-07 15:21:13,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 15:21:13,097 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-12-07 15:21:13,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:21:13,098 INFO L225 Difference]: With dead ends: 193 [2019-12-07 15:21:13,098 INFO L226 Difference]: Without dead ends: 75 [2019-12-07 15:21:13,099 INFO L630 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 [2019-12-07 15:21:13,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2019-12-07 15:21:13,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2019-12-07 15:21:13,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2019-12-07 15:21:13,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 111 transitions. [2019-12-07 15:21:13,104 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 111 transitions. Word has length 19 [2019-12-07 15:21:13,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:21:13,104 INFO L462 AbstractCegarLoop]: Abstraction has 75 states and 111 transitions. [2019-12-07 15:21:13,104 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 15:21:13,104 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 111 transitions. [2019-12-07 15:21:13,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-12-07 15:21:13,105 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:21:13,105 INFO L410 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] [2019-12-07 15:21:13,105 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:21:13,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:21:13,105 INFO L82 PathProgramCache]: Analyzing trace with hash 134472408, now seen corresponding path program 1 times [2019-12-07 15:21:13,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:21:13,106 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245219549] [2019-12-07 15:21:13,106 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:21:13,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:21:13,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:21:13,163 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245219549] [2019-12-07 15:21:13,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:21:13,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 15:21:13,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104751903] [2019-12-07 15:21:13,163 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 15:21:13,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:21:13,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 15:21:13,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 15:21:13,164 INFO L87 Difference]: Start difference. First operand 75 states and 111 transitions. Second operand 5 states. [2019-12-07 15:21:13,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:21:13,212 INFO L93 Difference]: Finished difference Result 169 states and 253 transitions. [2019-12-07 15:21:13,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 15:21:13,212 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2019-12-07 15:21:13,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:21:13,213 INFO L225 Difference]: With dead ends: 169 [2019-12-07 15:21:13,213 INFO L226 Difference]: Without dead ends: 100 [2019-12-07 15:21:13,214 INFO L630 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 [2019-12-07 15:21:13,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2019-12-07 15:21:13,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 96. [2019-12-07 15:21:13,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2019-12-07 15:21:13,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 143 transitions. [2019-12-07 15:21:13,221 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 143 transitions. Word has length 24 [2019-12-07 15:21:13,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:21:13,221 INFO L462 AbstractCegarLoop]: Abstraction has 96 states and 143 transitions. [2019-12-07 15:21:13,221 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 15:21:13,221 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 143 transitions. [2019-12-07 15:21:13,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-12-07 15:21:13,222 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:21:13,222 INFO L410 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] [2019-12-07 15:21:13,222 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:21:13,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:21:13,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1119046690, now seen corresponding path program 1 times [2019-12-07 15:21:13,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:21:13,223 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954444998] [2019-12-07 15:21:13,223 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:21:13,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:21:13,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:21:13,262 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954444998] [2019-12-07 15:21:13,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:21:13,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 15:21:13,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553080582] [2019-12-07 15:21:13,263 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 15:21:13,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:21:13,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 15:21:13,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:21:13,263 INFO L87 Difference]: Start difference. First operand 96 states and 143 transitions. Second operand 3 states. [2019-12-07 15:21:13,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:21:13,294 INFO L93 Difference]: Finished difference Result 197 states and 295 transitions. [2019-12-07 15:21:13,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 15:21:13,295 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2019-12-07 15:21:13,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:21:13,296 INFO L225 Difference]: With dead ends: 197 [2019-12-07 15:21:13,296 INFO L226 Difference]: Without dead ends: 107 [2019-12-07 15:21:13,296 INFO L630 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 [2019-12-07 15:21:13,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2019-12-07 15:21:13,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2019-12-07 15:21:13,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2019-12-07 15:21:13,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 150 transitions. [2019-12-07 15:21:13,304 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 150 transitions. Word has length 27 [2019-12-07 15:21:13,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:21:13,304 INFO L462 AbstractCegarLoop]: Abstraction has 105 states and 150 transitions. [2019-12-07 15:21:13,304 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 15:21:13,304 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 150 transitions. [2019-12-07 15:21:13,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-12-07 15:21:13,305 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:21:13,305 INFO L410 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] [2019-12-07 15:21:13,305 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:21:13,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:21:13,306 INFO L82 PathProgramCache]: Analyzing trace with hash -428868179, now seen corresponding path program 1 times [2019-12-07 15:21:13,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:21:13,306 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293442176] [2019-12-07 15:21:13,306 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:21:13,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:21:13,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:21:13,353 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293442176] [2019-12-07 15:21:13,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:21:13,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 15:21:13,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391648299] [2019-12-07 15:21:13,354 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 15:21:13,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:21:13,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 15:21:13,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 15:21:13,355 INFO L87 Difference]: Start difference. First operand 105 states and 150 transitions. Second operand 5 states. [2019-12-07 15:21:13,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:21:13,472 INFO L93 Difference]: Finished difference Result 533 states and 778 transitions. [2019-12-07 15:21:13,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 15:21:13,473 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2019-12-07 15:21:13,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:21:13,476 INFO L225 Difference]: With dead ends: 533 [2019-12-07 15:21:13,477 INFO L226 Difference]: Without dead ends: 434 [2019-12-07 15:21:13,477 INFO L630 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 [2019-12-07 15:21:13,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2019-12-07 15:21:13,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 171. [2019-12-07 15:21:13,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2019-12-07 15:21:13,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 239 transitions. [2019-12-07 15:21:13,499 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 239 transitions. Word has length 27 [2019-12-07 15:21:13,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:21:13,500 INFO L462 AbstractCegarLoop]: Abstraction has 171 states and 239 transitions. [2019-12-07 15:21:13,500 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 15:21:13,500 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 239 transitions. [2019-12-07 15:21:13,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-12-07 15:21:13,501 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:21:13,501 INFO L410 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] [2019-12-07 15:21:13,502 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:21:13,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:21:13,502 INFO L82 PathProgramCache]: Analyzing trace with hash -2129131921, now seen corresponding path program 1 times [2019-12-07 15:21:13,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:21:13,503 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885934938] [2019-12-07 15:21:13,503 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:21:13,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:21:13,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:21:13,625 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:21:13,625 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 15:21:13,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 03:21:13 BoogieIcfgContainer [2019-12-07 15:21:13,687 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 15:21:13,687 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 15:21:13,687 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 15:21:13,687 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 15:21:13,688 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:21:12" (3/4) ... [2019-12-07 15:21:13,689 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 15:21:13,752 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_0943dd90-2905-429a-ace5-1c3db899ea9d/bin/uautomizer/witness.graphml [2019-12-07 15:21:13,752 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 15:21:13,754 INFO L168 Benchmark]: Toolchain (without parser) took 2075.41 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.7 MB). Free memory was 940.8 MB in the beginning and 1.1 GB in the end (delta: -138.3 MB). Peak memory consumption was 218.1 MB. Max. memory is 11.5 GB. [2019-12-07 15:21:13,754 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 955.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:21:13,755 INFO L168 Benchmark]: CACSL2BoogieTranslator took 338.91 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.7 MB). Free memory was 935.5 MB in the beginning and 1.1 GB in the end (delta: -144.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 11.5 GB. [2019-12-07 15:21:13,755 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.96 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 15:21:13,755 INFO L168 Benchmark]: Boogie Preprocessor took 40.19 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 15:21:13,756 INFO L168 Benchmark]: RCFGBuilder took 586.30 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 981.1 MB in the end (delta: 88.5 MB). Peak memory consumption was 88.5 MB. Max. memory is 11.5 GB. [2019-12-07 15:21:13,756 INFO L168 Benchmark]: TraceAbstraction took 989.46 ms. Allocated memory is still 1.1 GB. Free memory was 981.1 MB in the beginning and 846.1 MB in the end (delta: 135.0 MB). Peak memory consumption was 135.0 MB. Max. memory is 11.5 GB. [2019-12-07 15:21:13,756 INFO L168 Benchmark]: Witness Printer took 65.41 ms. Allocated memory is still 1.1 GB. Free memory was 846.1 MB in the beginning and 1.1 GB in the end (delta: -233.0 MB). Peak memory consumption was 21.7 MB. Max. memory is 11.5 GB. [2019-12-07 15:21:13,758 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 955.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 338.91 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.7 MB). Free memory was 935.5 MB in the beginning and 1.1 GB in the end (delta: -144.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 51.96 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 40.19 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 586.30 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 981.1 MB in the end (delta: 88.5 MB). Peak memory consumption was 88.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 989.46 ms. Allocated memory is still 1.1 GB. Free memory was 981.1 MB in the beginning and 846.1 MB in the end (delta: 135.0 MB). Peak memory consumption was 135.0 MB. Max. memory is 11.5 GB. * Witness Printer took 65.41 ms. Allocated memory is still 1.1 GB. Free memory was 846.1 MB in the beginning and 1.1 GB in the end (delta: -233.0 MB). Peak memory consumption was 21.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1013]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L313] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L587] int waterLevel = 1; [L588] int methaneLevelCritical = 0; [L694] int pumpRunning = 0; [L695] int systemActive = 1; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L121] int retValue_acc ; [L122] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L536] int retValue_acc ; [L539] retValue_acc = 1 [L540] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L941] int splverifierCounter ; [L942] int tmp ; [L943] int tmp___0 ; [L944] int tmp___1 ; [L945] int tmp___2 ; [L948] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L950] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L952] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L958] tmp = __VERIFIER_nondet_int() [L960] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L605] COND TRUE waterLevel < 2 [L606] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L968] tmp___0 = __VERIFIER_nondet_int() [L970] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L978] tmp___2 = __VERIFIER_nondet_int() [L980] COND FALSE !(\read(tmp___2)) [L986] tmp___1 = __VERIFIER_nondet_int() [L988] COND TRUE \read(tmp___1) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L920] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L927] systemActive = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L701] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L708] COND FALSE !(\read(systemActive)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L550] int tmp ; [L551] int tmp___0 ; [L552] int tmp___1 ; [L626] int retValue_acc ; [L629] retValue_acc = methaneLevelCritical [L630] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L556] tmp = isMethaneLevelCritical() [L558] COND FALSE !(\read(tmp)) [L658] int retValue_acc ; [L661] retValue_acc = waterLevel [L662] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L562] tmp___0 = getWaterLevel() [L564] COND TRUE tmp___0 == 2 [L834] int retValue_acc ; [L837] retValue_acc = pumpRunning [L838] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L566] tmp___1 = isPumpRunning() [L568] COND FALSE !(\read(tmp___1)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L1013] __VERIFIER_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 197 locations, 3 error locations. Result: UNSAFE, OverallTime: 0.8s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 751 SDtfs, 885 SDslu, 457 SDs, 0 SdLazy, 75 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=197occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 269 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 143 NumberOfCodeBlocks, 143 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 110 ConstructedInterpolants, 0 QuantifiedInterpolants, 4928 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 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...