./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product59.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_9658209c-ac4f-4c43-a59f-ee8fc2b9e517/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_9658209c-ac4f-4c43-a59f-ee8fc2b9e517/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_9658209c-ac4f-4c43-a59f-ee8fc2b9e517/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_9658209c-ac4f-4c43-a59f-ee8fc2b9e517/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product59.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_9658209c-ac4f-4c43-a59f-ee8fc2b9e517/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_9658209c-ac4f-4c43-a59f-ee8fc2b9e517/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 fb1767f688fc9701e1f3b125f3120ace113b61a7 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 09:02:22,753 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 09:02:22,755 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 09:02:22,766 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 09:02:22,767 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 09:02:22,768 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 09:02:22,770 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 09:02:22,772 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 09:02:22,774 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 09:02:22,777 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 09:02:22,779 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 09:02:22,780 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 09:02:22,785 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 09:02:22,787 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 09:02:22,788 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 09:02:22,789 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 09:02:22,789 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 09:02:22,790 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 09:02:22,791 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 09:02:22,792 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 09:02:22,793 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 09:02:22,794 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 09:02:22,795 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 09:02:22,795 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 09:02:22,797 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 09:02:22,797 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 09:02:22,797 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 09:02:22,798 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 09:02:22,798 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 09:02:22,799 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 09:02:22,799 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 09:02:22,800 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 09:02:22,800 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 09:02:22,801 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 09:02:22,801 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 09:02:22,802 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 09:02:22,802 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 09:02:22,802 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 09:02:22,802 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 09:02:22,803 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 09:02:22,804 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 09:02:22,804 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_9658209c-ac4f-4c43-a59f-ee8fc2b9e517/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 09:02:22,814 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 09:02:22,814 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 09:02:22,815 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 09:02:22,815 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 09:02:22,815 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 09:02:22,816 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 09:02:22,816 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 09:02:22,816 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 09:02:22,816 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 09:02:22,816 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 09:02:22,816 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 09:02:22,817 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 09:02:22,817 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 09:02:22,817 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 09:02:22,817 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 09:02:22,817 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 09:02:22,817 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 09:02:22,818 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 09:02:22,818 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 09:02:22,818 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 09:02:22,818 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 09:02:22,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 09:02:22,818 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 09:02:22,819 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 09:02:22,819 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 09:02:22,819 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 09:02:22,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 09:02:22,820 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 09:02:22,820 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_9658209c-ac4f-4c43-a59f-ee8fc2b9e517/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 -> fb1767f688fc9701e1f3b125f3120ace113b61a7 [2019-10-22 09:02:22,845 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 09:02:22,855 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 09:02:22,857 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 09:02:22,859 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 09:02:22,860 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 09:02:22,860 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_9658209c-ac4f-4c43-a59f-ee8fc2b9e517/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec3_product59.cil.c [2019-10-22 09:02:22,906 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9658209c-ac4f-4c43-a59f-ee8fc2b9e517/bin/uautomizer/data/4601247c9/27b62322730646e2b3ee0daca4512571/FLAG55e55f961 [2019-10-22 09:02:23,346 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 09:02:23,347 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_9658209c-ac4f-4c43-a59f-ee8fc2b9e517/sv-benchmarks/c/product-lines/minepump_spec3_product59.cil.c [2019-10-22 09:02:23,361 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9658209c-ac4f-4c43-a59f-ee8fc2b9e517/bin/uautomizer/data/4601247c9/27b62322730646e2b3ee0daca4512571/FLAG55e55f961 [2019-10-22 09:02:23,373 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_9658209c-ac4f-4c43-a59f-ee8fc2b9e517/bin/uautomizer/data/4601247c9/27b62322730646e2b3ee0daca4512571 [2019-10-22 09:02:23,375 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 09:02:23,376 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 09:02:23,379 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 09:02:23,379 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 09:02:23,382 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 09:02:23,383 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:02:23" (1/1) ... [2019-10-22 09:02:23,387 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c1ea15e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:23, skipping insertion in model container [2019-10-22 09:02:23,387 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:02:23" (1/1) ... [2019-10-22 09:02:23,393 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 09:02:23,438 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 09:02:23,841 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:02:23,852 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 09:02:23,952 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:02:23,978 INFO L192 MainTranslator]: Completed translation [2019-10-22 09:02:23,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:23 WrapperNode [2019-10-22 09:02:23,979 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 09:02:23,979 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 09:02:23,979 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 09:02:23,980 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 09:02:23,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:23" (1/1) ... [2019-10-22 09:02:23,998 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:23" (1/1) ... [2019-10-22 09:02:24,039 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 09:02:24,040 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 09:02:24,040 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 09:02:24,040 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 09:02:24,056 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:23" (1/1) ... [2019-10-22 09:02:24,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:23" (1/1) ... [2019-10-22 09:02:24,062 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:23" (1/1) ... [2019-10-22 09:02:24,068 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:23" (1/1) ... [2019-10-22 09:02:24,080 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:23" (1/1) ... [2019-10-22 09:02:24,099 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:23" (1/1) ... [2019-10-22 09:02:24,109 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:23" (1/1) ... [2019-10-22 09:02:24,113 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 09:02:24,113 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 09:02:24,113 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 09:02:24,114 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 09:02:24,114 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9658209c-ac4f-4c43-a59f-ee8fc2b9e517/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 09:02:24,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 09:02:24,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-22 09:02:24,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 09:02:24,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 09:02:25,020 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 09:02:25,021 INFO L284 CfgBuilder]: Removed 202 assume(true) statements. [2019-10-22 09:02:25,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:25 BoogieIcfgContainer [2019-10-22 09:02:25,022 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 09:02:25,024 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 09:02:25,025 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 09:02:25,029 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 09:02:25,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 09:02:23" (1/3) ... [2019-10-22 09:02:25,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1da3f474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:02:25, skipping insertion in model container [2019-10-22 09:02:25,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:23" (2/3) ... [2019-10-22 09:02:25,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1da3f474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:02:25, skipping insertion in model container [2019-10-22 09:02:25,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:25" (3/3) ... [2019-10-22 09:02:25,033 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product59.cil.c [2019-10-22 09:02:25,045 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 09:02:25,052 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-22 09:02:25,060 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-22 09:02:25,090 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 09:02:25,090 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 09:02:25,090 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 09:02:25,091 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 09:02:25,091 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 09:02:25,092 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 09:02:25,092 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 09:02:25,092 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 09:02:25,112 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states. [2019-10-22 09:02:25,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-22 09:02:25,118 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:25,120 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:25,122 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:25,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:25,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1718080062, now seen corresponding path program 1 times [2019-10-22 09:02:25,134 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:25,134 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985104276] [2019-10-22 09:02:25,134 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:25,134 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:25,134 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:25,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:25,384 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 09:02:25,384 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985104276] [2019-10-22 09:02:25,385 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:25,386 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 09:02:25,386 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166076877] [2019-10-22 09:02:25,390 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 09:02:25,390 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:25,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 09:02:25,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 09:02:25,402 INFO L87 Difference]: Start difference. First operand 143 states. Second operand 2 states. [2019-10-22 09:02:25,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:25,432 INFO L93 Difference]: Finished difference Result 280 states and 419 transitions. [2019-10-22 09:02:25,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 09:02:25,433 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2019-10-22 09:02:25,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:25,446 INFO L225 Difference]: With dead ends: 280 [2019-10-22 09:02:25,446 INFO L226 Difference]: Without dead ends: 139 [2019-10-22 09:02:25,449 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 09:02:25,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2019-10-22 09:02:25,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2019-10-22 09:02:25,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2019-10-22 09:02:25,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 201 transitions. [2019-10-22 09:02:25,492 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 201 transitions. Word has length 18 [2019-10-22 09:02:25,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:25,492 INFO L462 AbstractCegarLoop]: Abstraction has 139 states and 201 transitions. [2019-10-22 09:02:25,492 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 09:02:25,492 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 201 transitions. [2019-10-22 09:02:25,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-22 09:02:25,493 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:25,493 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:25,494 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:25,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:25,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1665856481, now seen corresponding path program 1 times [2019-10-22 09:02:25,494 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:25,495 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485979365] [2019-10-22 09:02:25,495 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:25,495 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:25,495 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:25,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:25,590 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 09:02:25,590 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485979365] [2019-10-22 09:02:25,590 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:25,590 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 09:02:25,590 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633755724] [2019-10-22 09:02:25,594 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 09:02:25,594 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:25,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 09:02:25,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:02:25,594 INFO L87 Difference]: Start difference. First operand 139 states and 201 transitions. Second operand 3 states. [2019-10-22 09:02:25,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:25,615 INFO L93 Difference]: Finished difference Result 139 states and 201 transitions. [2019-10-22 09:02:25,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 09:02:25,617 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-10-22 09:02:25,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:25,619 INFO L225 Difference]: With dead ends: 139 [2019-10-22 09:02:25,619 INFO L226 Difference]: Without dead ends: 57 [2019-10-22 09:02:25,620 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 09:02:25,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-10-22 09:02:25,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2019-10-22 09:02:25,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-10-22 09:02:25,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 82 transitions. [2019-10-22 09:02:25,628 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 82 transitions. Word has length 19 [2019-10-22 09:02:25,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:25,628 INFO L462 AbstractCegarLoop]: Abstraction has 57 states and 82 transitions. [2019-10-22 09:02:25,628 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 09:02:25,629 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 82 transitions. [2019-10-22 09:02:25,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-22 09:02:25,629 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:25,630 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 09:02:25,630 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:25,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:25,630 INFO L82 PathProgramCache]: Analyzing trace with hash 35331171, now seen corresponding path program 1 times [2019-10-22 09:02:25,630 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:25,633 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431467262] [2019-10-22 09:02:25,634 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:25,634 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:25,635 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:25,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:25,753 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 09:02:25,754 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431467262] [2019-10-22 09:02:25,754 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:25,754 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 09:02:25,754 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964468747] [2019-10-22 09:02:25,755 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 09:02:25,755 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:25,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 09:02:25,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:02:25,756 INFO L87 Difference]: Start difference. First operand 57 states and 82 transitions. Second operand 6 states. [2019-10-22 09:02:25,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:25,892 INFO L93 Difference]: Finished difference Result 184 states and 271 transitions. [2019-10-22 09:02:25,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 09:02:25,892 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2019-10-22 09:02:25,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:25,893 INFO L225 Difference]: With dead ends: 184 [2019-10-22 09:02:25,894 INFO L226 Difference]: Without dead ends: 133 [2019-10-22 09:02:25,894 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-22 09:02:25,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2019-10-22 09:02:25,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 78. [2019-10-22 09:02:25,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2019-10-22 09:02:25,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 114 transitions. [2019-10-22 09:02:25,904 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 114 transitions. Word has length 24 [2019-10-22 09:02:25,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:25,904 INFO L462 AbstractCegarLoop]: Abstraction has 78 states and 114 transitions. [2019-10-22 09:02:25,904 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 09:02:25,904 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 114 transitions. [2019-10-22 09:02:25,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-22 09:02:25,905 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:25,905 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, 1] [2019-10-22 09:02:25,905 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:25,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:25,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1148352902, now seen corresponding path program 1 times [2019-10-22 09:02:25,906 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:25,906 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720288218] [2019-10-22 09:02:25,906 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:25,906 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:25,907 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:25,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:26,044 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 09:02:26,044 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720288218] [2019-10-22 09:02:26,045 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:26,045 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 09:02:26,045 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968195613] [2019-10-22 09:02:26,045 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 09:02:26,046 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:26,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 09:02:26,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:02:26,046 INFO L87 Difference]: Start difference. First operand 78 states and 114 transitions. Second operand 3 states. [2019-10-22 09:02:26,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:26,101 INFO L93 Difference]: Finished difference Result 173 states and 255 transitions. [2019-10-22 09:02:26,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 09:02:26,102 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2019-10-22 09:02:26,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:26,103 INFO L225 Difference]: With dead ends: 173 [2019-10-22 09:02:26,103 INFO L226 Difference]: Without dead ends: 101 [2019-10-22 09:02:26,104 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 09:02:26,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2019-10-22 09:02:26,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 99. [2019-10-22 09:02:26,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2019-10-22 09:02:26,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 141 transitions. [2019-10-22 09:02:26,117 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 141 transitions. Word has length 26 [2019-10-22 09:02:26,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:26,118 INFO L462 AbstractCegarLoop]: Abstraction has 99 states and 141 transitions. [2019-10-22 09:02:26,118 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 09:02:26,118 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 141 transitions. [2019-10-22 09:02:26,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-22 09:02:26,119 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:26,119 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, 1, 1] [2019-10-22 09:02:26,119 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:26,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:26,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1938820856, now seen corresponding path program 1 times [2019-10-22 09:02:26,120 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:26,120 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184349993] [2019-10-22 09:02:26,120 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:26,120 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:26,121 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:26,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:26,226 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 09:02:26,226 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184349993] [2019-10-22 09:02:26,227 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:26,227 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 09:02:26,227 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800746433] [2019-10-22 09:02:26,227 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 09:02:26,228 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:26,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 09:02:26,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:02:26,228 INFO L87 Difference]: Start difference. First operand 99 states and 141 transitions. Second operand 5 states. [2019-10-22 09:02:26,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:26,405 INFO L93 Difference]: Finished difference Result 515 states and 751 transitions. [2019-10-22 09:02:26,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 09:02:26,405 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2019-10-22 09:02:26,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:26,408 INFO L225 Difference]: With dead ends: 515 [2019-10-22 09:02:26,408 INFO L226 Difference]: Without dead ends: 422 [2019-10-22 09:02:26,409 INFO L600 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 [2019-10-22 09:02:26,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2019-10-22 09:02:26,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 167. [2019-10-22 09:02:26,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2019-10-22 09:02:26,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 233 transitions. [2019-10-22 09:02:26,438 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 233 transitions. Word has length 27 [2019-10-22 09:02:26,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:26,438 INFO L462 AbstractCegarLoop]: Abstraction has 167 states and 233 transitions. [2019-10-22 09:02:26,438 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 09:02:26,439 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 233 transitions. [2019-10-22 09:02:26,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-10-22 09:02:26,440 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:26,440 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, 1, 1, 1] [2019-10-22 09:02:26,440 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:26,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:26,440 INFO L82 PathProgramCache]: Analyzing trace with hash 238557114, now seen corresponding path program 1 times [2019-10-22 09:02:26,441 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:26,441 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838485131] [2019-10-22 09:02:26,441 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:26,441 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:26,441 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:27,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:27,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:27,380 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:27,381 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 09:02:27,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 09:02:27 BoogieIcfgContainer [2019-10-22 09:02:27,479 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 09:02:27,480 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 09:02:27,480 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 09:02:27,480 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 09:02:27,480 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:25" (3/4) ... [2019-10-22 09:02:27,483 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 09:02:27,563 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_9658209c-ac4f-4c43-a59f-ee8fc2b9e517/bin/uautomizer/witness.graphml [2019-10-22 09:02:27,563 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 09:02:27,565 INFO L168 Benchmark]: Toolchain (without parser) took 4188.48 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 253.8 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -192.2 MB). Peak memory consumption was 61.5 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:27,566 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:02:27,566 INFO L168 Benchmark]: CACSL2BoogieTranslator took 600.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 173.5 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -204.9 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:27,569 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.00 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:02:27,570 INFO L168 Benchmark]: Boogie Preprocessor took 73.61 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:27,570 INFO L168 Benchmark]: RCFGBuilder took 908.73 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: 75.3 MB). Peak memory consumption was 75.3 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:27,570 INFO L168 Benchmark]: TraceAbstraction took 2455.79 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 80.2 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -80.0 MB). Peak memory consumption was 239.4 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:27,571 INFO L168 Benchmark]: Witness Printer took 83.39 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:27,572 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 600.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 173.5 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -204.9 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 60.00 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 73.61 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 908.73 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: 75.3 MB). Peak memory consumption was 75.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2455.79 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 80.2 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -80.0 MB). Peak memory consumption was 239.4 MB. Max. memory is 11.5 GB. * Witness Printer took 83.39 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 694]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L414] int waterLevel = 1; [L415] int methaneLevelCritical = 0; [L517] int cleanupTimeShifts = 4; [L769] int pumpRunning = 0; [L770] int systemActive = 1; [L596] int retValue_acc ; [L597] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L645] int retValue_acc ; [L648] retValue_acc = 1 [L649] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L603] tmp = valid_product() [L605] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L701] int splverifierCounter ; [L702] int tmp ; [L703] int tmp___0 ; [L704] int tmp___1 ; [L705] int tmp___2 ; [L708] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L710] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L712] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L718] tmp = __VERIFIER_nondet_int() [L720] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L432] COND TRUE waterLevel < 2 [L433] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L728] tmp___0 = __VERIFIER_nondet_int() [L730] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L738] tmp___2 = __VERIFIER_nondet_int() [L740] COND FALSE !(\read(tmp___2)) [L744] tmp___1 = __VERIFIER_nondet_int() [L746] COND TRUE \read(tmp___1) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L987] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L994] systemActive = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L776] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L783] COND FALSE !(\read(systemActive)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L657] int tmp ; [L658] int tmp___0 ; [L659] int tmp___1 ; [L453] int retValue_acc ; [L456] retValue_acc = methaneLevelCritical [L457] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L663] tmp = isMethaneLevelCritical() [L665] COND FALSE !(\read(tmp)) [L485] int retValue_acc ; [L488] retValue_acc = waterLevel [L489] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L669] tmp___0 = getWaterLevel() [L671] COND TRUE tmp___0 == 2 [L901] int retValue_acc ; [L904] retValue_acc = pumpRunning [L905] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L673] tmp___1 = isPumpRunning() [L675] COND FALSE !(\read(tmp___1)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L694] __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, 143 locations, 3 error locations. Result: UNSAFE, OverallTime: 2.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 581 SDtfs, 743 SDslu, 733 SDs, 0 SdLazy, 81 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=167occurred in iteration=5, 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, 312 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 142 NumberOfCodeBlocks, 142 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 109 ConstructedInterpolants, 0 QuantifiedInterpolants, 5504 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...