./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product41.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_699de048-d180-4836-bf29-c40c61b06e10/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_699de048-d180-4836-bf29-c40c61b06e10/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_699de048-d180-4836-bf29-c40c61b06e10/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_699de048-d180-4836-bf29-c40c61b06e10/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product41.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_699de048-d180-4836-bf29-c40c61b06e10/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_699de048-d180-4836-bf29-c40c61b06e10/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 59866f864e0ec5bf7736536ea91554085144fb1d .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_699de048-d180-4836-bf29-c40c61b06e10/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_699de048-d180-4836-bf29-c40c61b06e10/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_699de048-d180-4836-bf29-c40c61b06e10/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_699de048-d180-4836-bf29-c40c61b06e10/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product41.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_699de048-d180-4836-bf29-c40c61b06e10/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_699de048-d180-4836-bf29-c40c61b06e10/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 59866f864e0ec5bf7736536ea91554085144fb1d ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 11:24:38,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:24:38,645 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:24:38,657 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:24:38,658 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:24:38,658 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:24:38,659 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:24:38,663 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:24:38,664 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:24:38,666 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:24:38,669 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:24:38,670 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:24:38,670 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:24:38,671 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:24:38,671 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:24:38,672 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:24:38,672 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:24:38,677 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:24:38,679 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:24:38,680 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:24:38,681 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:24:38,682 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:24:38,683 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:24:38,683 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:24:38,685 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:24:38,685 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:24:38,685 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:24:38,686 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:24:38,686 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:24:38,687 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:24:38,687 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:24:38,687 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:24:38,688 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:24:38,688 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:24:38,689 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:24:38,689 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:24:38,690 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:24:38,690 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:24:38,690 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:24:38,691 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:24:38,691 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:24:38,692 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_699de048-d180-4836-bf29-c40c61b06e10/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:24:38,702 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:24:38,702 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:24:38,703 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:24:38,703 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:24:38,703 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:24:38,703 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:24:38,704 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:24:38,704 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:24:38,704 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:24:38,704 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:24:38,704 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:24:38,704 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:24:38,705 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:24:38,705 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:24:38,705 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:24:38,706 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:24:38,706 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:24:38,706 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:24:38,706 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:24:38,706 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:24:38,706 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:24:38,706 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:24:38,707 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:24:38,707 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:24:38,707 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:24:38,707 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:24:38,707 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:24:38,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:24:38,707 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:24:38,708 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:24:38,708 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:24:38,708 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:24:38,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:24:38,708 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:24:38,708 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:24:38,708 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_699de048-d180-4836-bf29-c40c61b06e10/bin/utaipan 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 -> Taipan 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 -> 59866f864e0ec5bf7736536ea91554085144fb1d [2019-10-22 11:24:38,740 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:24:38,758 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:24:38,761 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:24:38,763 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:24:38,763 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:24:38,764 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_699de048-d180-4836-bf29-c40c61b06e10/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec4_product41.cil.c [2019-10-22 11:24:38,807 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_699de048-d180-4836-bf29-c40c61b06e10/bin/utaipan/data/f6b17f6de/9217619656ff4879903552ee28e20482/FLAGa60b84f38 [2019-10-22 11:24:39,218 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:24:39,218 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_699de048-d180-4836-bf29-c40c61b06e10/sv-benchmarks/c/product-lines/minepump_spec4_product41.cil.c [2019-10-22 11:24:39,228 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_699de048-d180-4836-bf29-c40c61b06e10/bin/utaipan/data/f6b17f6de/9217619656ff4879903552ee28e20482/FLAGa60b84f38 [2019-10-22 11:24:39,243 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_699de048-d180-4836-bf29-c40c61b06e10/bin/utaipan/data/f6b17f6de/9217619656ff4879903552ee28e20482 [2019-10-22 11:24:39,245 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:24:39,246 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:24:39,248 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:24:39,248 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:24:39,251 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:24:39,252 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:24:39" (1/1) ... [2019-10-22 11:24:39,254 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2de3efe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:39, skipping insertion in model container [2019-10-22 11:24:39,255 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:24:39" (1/1) ... [2019-10-22 11:24:39,261 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:24:39,306 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:24:39,616 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:24:39,627 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:24:39,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:24:39,733 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:24:39,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:39 WrapperNode [2019-10-22 11:24:39,734 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:24:39,734 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:24:39,734 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:24:39,734 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:24:39,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:39" (1/1) ... [2019-10-22 11:24:39,757 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:39" (1/1) ... [2019-10-22 11:24:39,790 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:24:39,790 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:24:39,791 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:24:39,791 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:24:39,800 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:39" (1/1) ... [2019-10-22 11:24:39,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:39" (1/1) ... [2019-10-22 11:24:39,804 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:39" (1/1) ... [2019-10-22 11:24:39,804 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:39" (1/1) ... [2019-10-22 11:24:39,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:39" (1/1) ... [2019-10-22 11:24:39,818 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:39" (1/1) ... [2019-10-22 11:24:39,820 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:39" (1/1) ... [2019-10-22 11:24:39,823 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:24:39,824 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:24:39,824 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:24:39,824 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:24:39,833 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_699de048-d180-4836-bf29-c40c61b06e10/bin/utaipan/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 11:24:39,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:24:39,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-22 11:24:39,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:24:39,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:24:40,592 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:24:40,593 INFO L284 CfgBuilder]: Removed 114 assume(true) statements. [2019-10-22 11:24:40,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:24:40 BoogieIcfgContainer [2019-10-22 11:24:40,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:24:40,595 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:24:40,595 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:24:40,599 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:24:40,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:24:39" (1/3) ... [2019-10-22 11:24:40,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5759dc68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:24:40, skipping insertion in model container [2019-10-22 11:24:40,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:39" (2/3) ... [2019-10-22 11:24:40,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5759dc68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:24:40, skipping insertion in model container [2019-10-22 11:24:40,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:24:40" (3/3) ... [2019-10-22 11:24:40,604 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product41.cil.c [2019-10-22 11:24:40,615 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:24:40,625 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-22 11:24:40,637 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-22 11:24:40,665 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:24:40,665 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:24:40,666 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:24:40,666 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:24:40,666 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:24:40,666 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:24:40,667 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:24:40,667 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:24:40,682 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states. [2019-10-22 11:24:40,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 11:24:40,692 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:40,694 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:40,695 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:40,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:40,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1847621448, now seen corresponding path program 1 times [2019-10-22 11:24:40,710 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:40,711 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350180083] [2019-10-22 11:24:40,711 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:40,711 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:40,711 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:40,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:40,935 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 11:24:40,935 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350180083] [2019-10-22 11:24:40,936 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:40,937 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:24:40,937 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11951770] [2019-10-22 11:24:40,942 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:24:40,943 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:40,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:24:40,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:24:40,960 INFO L87 Difference]: Start difference. First operand 87 states. Second operand 2 states. [2019-10-22 11:24:40,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:40,990 INFO L93 Difference]: Finished difference Result 168 states and 251 transitions. [2019-10-22 11:24:40,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:24:40,992 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-10-22 11:24:40,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:41,004 INFO L225 Difference]: With dead ends: 168 [2019-10-22 11:24:41,004 INFO L226 Difference]: Without dead ends: 83 [2019-10-22 11:24:41,007 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 11:24:41,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2019-10-22 11:24:41,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2019-10-22 11:24:41,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2019-10-22 11:24:41,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 117 transitions. [2019-10-22 11:24:41,056 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 117 transitions. Word has length 16 [2019-10-22 11:24:41,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:41,057 INFO L462 AbstractCegarLoop]: Abstraction has 83 states and 117 transitions. [2019-10-22 11:24:41,057 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:24:41,057 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 117 transitions. [2019-10-22 11:24:41,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 11:24:41,058 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:41,058 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:41,058 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:41,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:41,058 INFO L82 PathProgramCache]: Analyzing trace with hash 800864551, now seen corresponding path program 1 times [2019-10-22 11:24:41,059 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:41,059 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898794158] [2019-10-22 11:24:41,059 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:41,059 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:41,059 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:41,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:41,178 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 11:24:41,179 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898794158] [2019-10-22 11:24:41,179 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:41,179 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:24:41,179 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844351240] [2019-10-22 11:24:41,185 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:24:41,185 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:41,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:24:41,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:24:41,186 INFO L87 Difference]: Start difference. First operand 83 states and 117 transitions. Second operand 3 states. [2019-10-22 11:24:41,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:41,206 INFO L93 Difference]: Finished difference Result 83 states and 117 transitions. [2019-10-22 11:24:41,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:24:41,213 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-10-22 11:24:41,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:41,214 INFO L225 Difference]: With dead ends: 83 [2019-10-22 11:24:41,214 INFO L226 Difference]: Without dead ends: 37 [2019-10-22 11:24:41,215 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 11:24:41,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-10-22 11:24:41,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-10-22 11:24:41,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-10-22 11:24:41,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 52 transitions. [2019-10-22 11:24:41,227 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 52 transitions. Word has length 17 [2019-10-22 11:24:41,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:41,228 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 52 transitions. [2019-10-22 11:24:41,228 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:24:41,228 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 52 transitions. [2019-10-22 11:24:41,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-22 11:24:41,228 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:41,228 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:41,229 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:41,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:41,229 INFO L82 PathProgramCache]: Analyzing trace with hash -2126819203, now seen corresponding path program 1 times [2019-10-22 11:24:41,229 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:41,230 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730538457] [2019-10-22 11:24:41,230 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:41,230 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:41,230 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:41,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:41,361 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 11:24:41,362 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730538457] [2019-10-22 11:24:41,362 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:41,362 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:24:41,362 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129161461] [2019-10-22 11:24:41,362 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:24:41,363 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:41,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:24:41,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:24:41,363 INFO L87 Difference]: Start difference. First operand 37 states and 52 transitions. Second operand 6 states. [2019-10-22 11:24:41,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:41,443 INFO L93 Difference]: Finished difference Result 68 states and 98 transitions. [2019-10-22 11:24:41,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:24:41,444 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2019-10-22 11:24:41,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:41,444 INFO L225 Difference]: With dead ends: 68 [2019-10-22 11:24:41,444 INFO L226 Difference]: Without dead ends: 37 [2019-10-22 11:24:41,445 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 11:24:41,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-10-22 11:24:41,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-10-22 11:24:41,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-10-22 11:24:41,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2019-10-22 11:24:41,450 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 51 transitions. Word has length 22 [2019-10-22 11:24:41,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:41,450 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 51 transitions. [2019-10-22 11:24:41,450 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:24:41,450 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 51 transitions. [2019-10-22 11:24:41,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-22 11:24:41,451 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:41,451 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] [2019-10-22 11:24:41,451 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:41,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:41,452 INFO L82 PathProgramCache]: Analyzing trace with hash -306622024, now seen corresponding path program 1 times [2019-10-22 11:24:41,452 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:41,452 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936702520] [2019-10-22 11:24:41,452 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:41,452 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:41,452 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:41,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:41,495 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 11:24:41,495 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936702520] [2019-10-22 11:24:41,495 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:41,496 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:24:41,496 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124772924] [2019-10-22 11:24:41,496 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:24:41,496 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:41,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:24:41,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:24:41,497 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand 3 states. [2019-10-22 11:24:41,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:41,517 INFO L93 Difference]: Finished difference Result 89 states and 126 transitions. [2019-10-22 11:24:41,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:24:41,518 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2019-10-22 11:24:41,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:41,518 INFO L225 Difference]: With dead ends: 89 [2019-10-22 11:24:41,519 INFO L226 Difference]: Without dead ends: 58 [2019-10-22 11:24:41,519 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 11:24:41,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2019-10-22 11:24:41,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2019-10-22 11:24:41,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-10-22 11:24:41,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 78 transitions. [2019-10-22 11:24:41,533 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 78 transitions. Word has length 23 [2019-10-22 11:24:41,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:41,533 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 78 transitions. [2019-10-22 11:24:41,534 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:24:41,534 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 78 transitions. [2019-10-22 11:24:41,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-22 11:24:41,534 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:41,534 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, 1] [2019-10-22 11:24:41,535 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:41,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:41,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1880803796, now seen corresponding path program 1 times [2019-10-22 11:24:41,535 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:41,535 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652959902] [2019-10-22 11:24:41,536 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:41,536 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:41,536 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:41,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:41,679 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 11:24:41,679 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652959902] [2019-10-22 11:24:41,679 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:41,680 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 11:24:41,680 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580644562] [2019-10-22 11:24:41,680 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 11:24:41,680 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:41,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 11:24:41,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:24:41,681 INFO L87 Difference]: Start difference. First operand 56 states and 78 transitions. Second operand 8 states. [2019-10-22 11:24:42,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:42,061 INFO L93 Difference]: Finished difference Result 347 states and 506 transitions. [2019-10-22 11:24:42,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-22 11:24:42,061 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2019-10-22 11:24:42,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:42,064 INFO L225 Difference]: With dead ends: 347 [2019-10-22 11:24:42,064 INFO L226 Difference]: Without dead ends: 297 [2019-10-22 11:24:42,069 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2019-10-22 11:24:42,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2019-10-22 11:24:42,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 140. [2019-10-22 11:24:42,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2019-10-22 11:24:42,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 193 transitions. [2019-10-22 11:24:42,111 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 193 transitions. Word has length 29 [2019-10-22 11:24:42,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:42,112 INFO L462 AbstractCegarLoop]: Abstraction has 140 states and 193 transitions. [2019-10-22 11:24:42,112 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 11:24:42,112 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 193 transitions. [2019-10-22 11:24:42,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-22 11:24:42,113 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:42,113 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:42,114 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:42,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:42,114 INFO L82 PathProgramCache]: Analyzing trace with hash -130752981, now seen corresponding path program 1 times [2019-10-22 11:24:42,114 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:42,115 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636140299] [2019-10-22 11:24:42,115 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:42,115 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:42,115 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:42,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:42,212 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-22 11:24:42,213 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636140299] [2019-10-22 11:24:42,213 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:42,213 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:24:42,213 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471550246] [2019-10-22 11:24:42,214 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:24:42,214 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:42,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:24:42,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:24:42,215 INFO L87 Difference]: Start difference. First operand 140 states and 193 transitions. Second operand 5 states. [2019-10-22 11:24:42,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:42,285 INFO L93 Difference]: Finished difference Result 388 states and 531 transitions. [2019-10-22 11:24:42,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:24:42,288 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2019-10-22 11:24:42,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:42,289 INFO L225 Difference]: With dead ends: 388 [2019-10-22 11:24:42,289 INFO L226 Difference]: Without dead ends: 254 [2019-10-22 11:24:42,290 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:24:42,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2019-10-22 11:24:42,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 149. [2019-10-22 11:24:42,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2019-10-22 11:24:42,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 202 transitions. [2019-10-22 11:24:42,326 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 202 transitions. Word has length 47 [2019-10-22 11:24:42,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:42,326 INFO L462 AbstractCegarLoop]: Abstraction has 149 states and 202 transitions. [2019-10-22 11:24:42,326 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:24:42,326 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 202 transitions. [2019-10-22 11:24:42,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-22 11:24:42,328 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:42,328 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:42,328 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:42,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:42,328 INFO L82 PathProgramCache]: Analyzing trace with hash -640226071, now seen corresponding path program 1 times [2019-10-22 11:24:42,333 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:42,334 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914087883] [2019-10-22 11:24:42,334 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:42,334 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:42,334 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:42,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:42,391 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-22 11:24:42,392 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914087883] [2019-10-22 11:24:42,392 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:42,392 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:24:42,392 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477362814] [2019-10-22 11:24:42,392 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:24:42,393 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:42,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:24:42,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:24:42,394 INFO L87 Difference]: Start difference. First operand 149 states and 202 transitions. Second operand 4 states. [2019-10-22 11:24:42,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:42,429 INFO L93 Difference]: Finished difference Result 311 states and 422 transitions. [2019-10-22 11:24:42,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:24:42,430 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2019-10-22 11:24:42,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:42,431 INFO L225 Difference]: With dead ends: 311 [2019-10-22 11:24:42,431 INFO L226 Difference]: Without dead ends: 168 [2019-10-22 11:24:42,432 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:24:42,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2019-10-22 11:24:42,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 123. [2019-10-22 11:24:42,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2019-10-22 11:24:42,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 164 transitions. [2019-10-22 11:24:42,451 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 164 transitions. Word has length 47 [2019-10-22 11:24:42,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:42,451 INFO L462 AbstractCegarLoop]: Abstraction has 123 states and 164 transitions. [2019-10-22 11:24:42,451 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:24:42,452 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 164 transitions. [2019-10-22 11:24:42,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-10-22 11:24:42,455 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:42,456 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:42,456 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:42,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:42,456 INFO L82 PathProgramCache]: Analyzing trace with hash -445753367, now seen corresponding path program 1 times [2019-10-22 11:24:42,457 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:42,457 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322265234] [2019-10-22 11:24:42,457 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:42,457 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:42,457 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:42,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:42,580 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:42,580 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322265234] [2019-10-22 11:24:42,581 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555716901] [2019-10-22 11:24:42,581 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_699de048-d180-4836-bf29-c40c61b06e10/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:24:42,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:42,702 INFO L256 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 11:24:42,708 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:42,755 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:42,755 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:42,787 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:42,787 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1842767215] [2019-10-22 11:24:42,794 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 49 [2019-10-22 11:24:42,842 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-10-22 11:24:42,843 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-22 11:24:43,313 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:24:43,313 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: inappropriate decl info IMPLEMENTATION at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Boogie2SmtSymbolTable.getBoogieVar(Boogie2SmtSymbolTable.java:222) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.getBoogieVar(NonrelationalStatementProcessor.java:348) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.handleHavocStatement(NonrelationalStatementProcessor.java:325) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.processStatement(NonrelationalStatementProcessor.java:159) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:138) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:107) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:422) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:413) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:140) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.applyInternally(CompoundDomainPostOperator.java:306) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.apply(CompoundDomainPostOperator.java:131) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.apply(CompoundDomainPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormanCachedPostOperation.restoreOriginalStateVariables(PoormanCachedPostOperation.java:322) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.applyPost(PoormansAbstractPostOperator.java:217) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:120) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.lambda$17(DisjunctiveAbstractState.java:323) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.mapCollection(DisjunctiveAbstractState.java:519) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.apply(DisjunctiveAbstractState.java:323) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateAbstractPost(FixpointEngine.java:249) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateFixpoint(FixpointEngine.java:134) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.run(FixpointEngine.java:105) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.tool.AbstractInterpreter.runWithoutTimeoutAndResults(AbstractInterpreter.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.generateFixpoints(CegarAbsIntRunner.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.(CegarAbsIntRunner.java:158) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleAbstractInterpretation.getOrConstructRunner(IpTcStrategyModuleAbstractInterpretation.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleAbstractInterpretation.construct(IpTcStrategyModuleAbstractInterpretation.java:81) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:299) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-10-22 11:24:43,320 INFO L168 Benchmark]: Toolchain (without parser) took 4071.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 939.7 MB in the beginning and 1.1 GB in the end (delta: -126.0 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:43,320 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 958.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:24:43,321 INFO L168 Benchmark]: CACSL2BoogieTranslator took 485.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 934.3 MB in the beginning and 1.1 GB in the end (delta: -194.3 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:43,321 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.22 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 11:24:43,322 INFO L168 Benchmark]: Boogie Preprocessor took 32.98 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 11:24:43,322 INFO L168 Benchmark]: RCFGBuilder took 770.41 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: 54.6 MB). Peak memory consumption was 54.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:43,323 INFO L168 Benchmark]: TraceAbstraction took 2722.23 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:43,330 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 958.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 485.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 934.3 MB in the beginning and 1.1 GB in the end (delta: -194.3 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 56.22 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. * Boogie Preprocessor took 32.98 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. * RCFGBuilder took 770.41 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: 54.6 MB). Peak memory consumption was 54.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2722.23 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: inappropriate decl info IMPLEMENTATION de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: inappropriate decl info IMPLEMENTATION: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Boogie2SmtSymbolTable.getBoogieVar(Boogie2SmtSymbolTable.java:222) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-cad4683 [2019-10-22 11:24:45,393 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:24:45,395 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:24:45,404 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:24:45,407 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:24:45,407 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:24:45,408 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:24:45,410 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:24:45,411 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:24:45,411 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:24:45,412 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:24:45,414 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:24:45,414 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:24:45,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:24:45,415 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:24:45,416 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:24:45,417 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:24:45,417 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:24:45,418 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:24:45,420 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:24:45,427 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:24:45,428 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:24:45,429 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:24:45,430 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:24:45,431 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:24:45,431 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:24:45,432 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:24:45,432 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:24:45,432 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:24:45,437 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:24:45,437 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:24:45,438 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:24:45,439 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:24:45,440 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:24:45,441 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:24:45,442 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:24:45,443 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:24:45,443 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:24:45,443 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:24:45,444 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:24:45,444 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:24:45,445 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_699de048-d180-4836-bf29-c40c61b06e10/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-10-22 11:24:45,468 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:24:45,469 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:24:45,471 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:24:45,471 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:24:45,471 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:24:45,471 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:24:45,471 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:24:45,471 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:24:45,472 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:24:45,472 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:24:45,472 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:24:45,472 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:24:45,473 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:24:45,474 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:24:45,474 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:24:45,474 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:24:45,474 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 11:24:45,474 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 11:24:45,475 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:24:45,475 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:24:45,475 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 11:24:45,475 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:24:45,475 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:24:45,476 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:24:45,476 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:24:45,476 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:24:45,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:24:45,476 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:24:45,476 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:24:45,476 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:24:45,477 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-10-22 11:24:45,477 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 11:24:45,477 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:24:45,477 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:24:45,477 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_699de048-d180-4836-bf29-c40c61b06e10/bin/utaipan 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 -> Taipan 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 -> 59866f864e0ec5bf7736536ea91554085144fb1d [2019-10-22 11:24:45,505 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:24:45,517 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:24:45,519 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:24:45,521 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:24:45,524 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:24:45,525 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_699de048-d180-4836-bf29-c40c61b06e10/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec4_product41.cil.c [2019-10-22 11:24:45,582 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_699de048-d180-4836-bf29-c40c61b06e10/bin/utaipan/data/b2a3740e8/9b8e21b9c5de4cfea33e96c2a6effa22/FLAG8e40dea1e [2019-10-22 11:24:45,975 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:24:45,976 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_699de048-d180-4836-bf29-c40c61b06e10/sv-benchmarks/c/product-lines/minepump_spec4_product41.cil.c [2019-10-22 11:24:45,986 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_699de048-d180-4836-bf29-c40c61b06e10/bin/utaipan/data/b2a3740e8/9b8e21b9c5de4cfea33e96c2a6effa22/FLAG8e40dea1e [2019-10-22 11:24:46,310 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_699de048-d180-4836-bf29-c40c61b06e10/bin/utaipan/data/b2a3740e8/9b8e21b9c5de4cfea33e96c2a6effa22 [2019-10-22 11:24:46,313 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:24:46,314 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:24:46,315 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:24:46,315 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:24:46,321 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:24:46,321 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:24:46" (1/1) ... [2019-10-22 11:24:46,324 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2789ba6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:46, skipping insertion in model container [2019-10-22 11:24:46,324 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:24:46" (1/1) ... [2019-10-22 11:24:46,330 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:24:46,367 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:24:46,694 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:24:46,714 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:24:46,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:24:46,906 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:24:46,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:46 WrapperNode [2019-10-22 11:24:46,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:24:46,907 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:24:46,907 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:24:46,907 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:24:46,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:46" (1/1) ... [2019-10-22 11:24:46,935 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:46" (1/1) ... [2019-10-22 11:24:46,981 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:24:46,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:24:46,982 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:24:46,982 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:24:46,998 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:46" (1/1) ... [2019-10-22 11:24:46,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:46" (1/1) ... [2019-10-22 11:24:47,003 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:46" (1/1) ... [2019-10-22 11:24:47,003 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:46" (1/1) ... [2019-10-22 11:24:47,019 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:46" (1/1) ... [2019-10-22 11:24:47,026 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:46" (1/1) ... [2019-10-22 11:24:47,028 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:46" (1/1) ... [2019-10-22 11:24:47,032 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:24:47,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:24:47,033 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:24:47,033 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:24:47,035 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_699de048-d180-4836-bf29-c40c61b06e10/bin/utaipan/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 11:24:47,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:24:47,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2019-10-22 11:24:47,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:24:47,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:24:47,931 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:24:47,931 INFO L284 CfgBuilder]: Removed 114 assume(true) statements. [2019-10-22 11:24:47,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:24:47 BoogieIcfgContainer [2019-10-22 11:24:47,932 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:24:47,934 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:24:47,934 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:24:47,937 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:24:47,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:24:46" (1/3) ... [2019-10-22 11:24:47,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79b3d5e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:24:47, skipping insertion in model container [2019-10-22 11:24:47,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:46" (2/3) ... [2019-10-22 11:24:47,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79b3d5e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:24:47, skipping insertion in model container [2019-10-22 11:24:47,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:24:47" (3/3) ... [2019-10-22 11:24:47,942 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product41.cil.c [2019-10-22 11:24:47,954 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:24:47,963 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-22 11:24:47,973 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-22 11:24:48,002 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:24:48,002 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:24:48,002 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:24:48,002 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:24:48,003 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:24:48,003 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:24:48,003 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:24:48,003 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:24:48,020 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states. [2019-10-22 11:24:48,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 11:24:48,030 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:48,031 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:48,033 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:48,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:48,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1847621448, now seen corresponding path program 1 times [2019-10-22 11:24:48,051 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:24:48,051 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1903629239] [2019-10-22 11:24:48,052 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_699de048-d180-4836-bf29-c40c61b06e10/bin/utaipan/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:24:48,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:48,259 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-22 11:24:48,264 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:48,280 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 11:24:48,280 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:48,287 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 11:24:48,288 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1903629239] [2019-10-22 11:24:48,289 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:48,289 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-10-22 11:24:48,290 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978448432] [2019-10-22 11:24:48,294 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:24:48,294 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:24:48,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:24:48,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:24:48,310 INFO L87 Difference]: Start difference. First operand 87 states. Second operand 2 states. [2019-10-22 11:24:48,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:48,341 INFO L93 Difference]: Finished difference Result 168 states and 251 transitions. [2019-10-22 11:24:48,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:24:48,342 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-10-22 11:24:48,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:48,356 INFO L225 Difference]: With dead ends: 168 [2019-10-22 11:24:48,358 INFO L226 Difference]: Without dead ends: 83 [2019-10-22 11:24:48,362 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 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 11:24:48,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2019-10-22 11:24:48,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2019-10-22 11:24:48,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2019-10-22 11:24:48,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 117 transitions. [2019-10-22 11:24:48,412 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 117 transitions. Word has length 16 [2019-10-22 11:24:48,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:48,412 INFO L462 AbstractCegarLoop]: Abstraction has 83 states and 117 transitions. [2019-10-22 11:24:48,412 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:24:48,412 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 117 transitions. [2019-10-22 11:24:48,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 11:24:48,416 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:48,416 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:48,617 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:24:48,617 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:48,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:48,618 INFO L82 PathProgramCache]: Analyzing trace with hash 800864551, now seen corresponding path program 1 times [2019-10-22 11:24:48,619 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:24:48,621 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [404209521] [2019-10-22 11:24:48,621 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_699de048-d180-4836-bf29-c40c61b06e10/bin/utaipan/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:24:48,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:48,795 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:24:48,796 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:48,819 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 11:24:48,819 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:48,832 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 11:24:48,832 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [404209521] [2019-10-22 11:24:48,832 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:48,833 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-10-22 11:24:48,833 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343861997] [2019-10-22 11:24:48,834 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:24:48,835 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:24:48,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:24:48,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:24:48,835 INFO L87 Difference]: Start difference. First operand 83 states and 117 transitions. Second operand 4 states. [2019-10-22 11:24:48,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:48,879 INFO L93 Difference]: Finished difference Result 160 states and 228 transitions. [2019-10-22 11:24:48,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:24:48,884 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-10-22 11:24:48,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:48,885 INFO L225 Difference]: With dead ends: 160 [2019-10-22 11:24:48,886 INFO L226 Difference]: Without dead ends: 83 [2019-10-22 11:24:48,887 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:24:48,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2019-10-22 11:24:48,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2019-10-22 11:24:48,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2019-10-22 11:24:48,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 114 transitions. [2019-10-22 11:24:48,900 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 114 transitions. Word has length 17 [2019-10-22 11:24:48,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:48,900 INFO L462 AbstractCegarLoop]: Abstraction has 83 states and 114 transitions. [2019-10-22 11:24:48,901 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:24:48,901 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 114 transitions. [2019-10-22 11:24:48,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-22 11:24:48,901 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:48,902 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 11:24:49,102 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:24:49,102 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:49,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:49,103 INFO L82 PathProgramCache]: Analyzing trace with hash 257261223, now seen corresponding path program 1 times [2019-10-22 11:24:49,103 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:24:49,104 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1821918151] [2019-10-22 11:24:49,104 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_699de048-d180-4836-bf29-c40c61b06e10/bin/utaipan/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:24:49,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:49,245 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:24:49,246 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:49,253 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 11:24:49,253 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:49,255 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 11:24:49,255 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1821918151] [2019-10-22 11:24:49,255 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:49,255 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-22 11:24:49,256 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772492074] [2019-10-22 11:24:49,256 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:24:49,256 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:24:49,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:24:49,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:24:49,258 INFO L87 Difference]: Start difference. First operand 83 states and 114 transitions. Second operand 3 states. [2019-10-22 11:24:49,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:49,398 INFO L93 Difference]: Finished difference Result 207 states and 285 transitions. [2019-10-22 11:24:49,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:24:49,399 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2019-10-22 11:24:49,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:49,400 INFO L225 Difference]: With dead ends: 207 [2019-10-22 11:24:49,400 INFO L226 Difference]: Without dead ends: 130 [2019-10-22 11:24:49,401 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 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 11:24:49,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2019-10-22 11:24:49,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 124. [2019-10-22 11:24:49,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2019-10-22 11:24:49,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 168 transitions. [2019-10-22 11:24:49,422 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 168 transitions. Word has length 18 [2019-10-22 11:24:49,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:49,423 INFO L462 AbstractCegarLoop]: Abstraction has 124 states and 168 transitions. [2019-10-22 11:24:49,423 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:24:49,423 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 168 transitions. [2019-10-22 11:24:49,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-22 11:24:49,424 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:49,424 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 11:24:49,624 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:24:49,625 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:49,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:49,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1634665157, now seen corresponding path program 1 times [2019-10-22 11:24:49,626 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:24:49,626 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1743744935] [2019-10-22 11:24:49,626 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_699de048-d180-4836-bf29-c40c61b06e10/bin/utaipan/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:24:49,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:49,766 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 11:24:49,767 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:49,795 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 11:24:49,795 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:49,833 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 11:24:49,835 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1743744935] [2019-10-22 11:24:49,836 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:49,836 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2019-10-22 11:24:49,836 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562756542] [2019-10-22 11:24:49,837 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 11:24:49,838 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:24:49,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 11:24:49,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:24:49,839 INFO L87 Difference]: Start difference. First operand 124 states and 168 transitions. Second operand 8 states. [2019-10-22 11:24:50,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:50,296 INFO L93 Difference]: Finished difference Result 809 states and 1129 transitions. [2019-10-22 11:24:50,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-22 11:24:50,298 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2019-10-22 11:24:50,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:50,301 INFO L225 Difference]: With dead ends: 809 [2019-10-22 11:24:50,301 INFO L226 Difference]: Without dead ends: 691 [2019-10-22 11:24:50,302 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2019-10-22 11:24:50,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2019-10-22 11:24:50,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 316. [2019-10-22 11:24:50,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2019-10-22 11:24:50,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 417 transitions. [2019-10-22 11:24:50,378 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 417 transitions. Word has length 24 [2019-10-22 11:24:50,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:50,380 INFO L462 AbstractCegarLoop]: Abstraction has 316 states and 417 transitions. [2019-10-22 11:24:50,380 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 11:24:50,380 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 417 transitions. [2019-10-22 11:24:50,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-22 11:24:50,382 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:50,382 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:50,584 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:24:50,584 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:50,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:50,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1598767431, now seen corresponding path program 1 times [2019-10-22 11:24:50,585 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:24:50,586 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2146304231] [2019-10-22 11:24:50,586 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_699de048-d180-4836-bf29-c40c61b06e10/bin/utaipan/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:24:50,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:50,755 INFO L256 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 11:24:50,757 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:50,777 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 11:24:50,777 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:50,797 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 11:24:50,797 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2146304231] [2019-10-22 11:24:50,797 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:50,797 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-10-22 11:24:50,797 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733939019] [2019-10-22 11:24:50,798 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:24:50,798 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:24:50,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:24:50,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:24:50,799 INFO L87 Difference]: Start difference. First operand 316 states and 417 transitions. Second operand 5 states. [2019-10-22 11:24:50,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:50,934 INFO L93 Difference]: Finished difference Result 876 states and 1131 transitions. [2019-10-22 11:24:50,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:24:50,935 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2019-10-22 11:24:50,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:50,937 INFO L225 Difference]: With dead ends: 876 [2019-10-22 11:24:50,938 INFO L226 Difference]: Without dead ends: 566 [2019-10-22 11:24:50,939 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:24:50,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2019-10-22 11:24:50,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 343. [2019-10-22 11:24:50,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2019-10-22 11:24:50,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 444 transitions. [2019-10-22 11:24:50,982 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 444 transitions. Word has length 38 [2019-10-22 11:24:50,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:50,982 INFO L462 AbstractCegarLoop]: Abstraction has 343 states and 444 transitions. [2019-10-22 11:24:50,983 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:24:50,983 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 444 transitions. [2019-10-22 11:24:50,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-22 11:24:50,984 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:50,984 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:51,187 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:24:51,187 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:51,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:51,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1464753925, now seen corresponding path program 1 times [2019-10-22 11:24:51,188 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:24:51,188 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [23739413] [2019-10-22 11:24:51,189 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_699de048-d180-4836-bf29-c40c61b06e10/bin/utaipan/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:24:51,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:51,310 INFO L256 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 11:24:51,312 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:51,328 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 11:24:51,329 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:51,343 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 11:24:51,344 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [23739413] [2019-10-22 11:24:51,344 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:51,344 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-22 11:24:51,344 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677775086] [2019-10-22 11:24:51,345 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:24:51,345 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:24:51,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:24:51,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:24:51,346 INFO L87 Difference]: Start difference. First operand 343 states and 444 transitions. Second operand 6 states. [2019-10-22 11:24:51,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:51,442 INFO L93 Difference]: Finished difference Result 743 states and 952 transitions. [2019-10-22 11:24:51,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:24:51,443 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2019-10-22 11:24:51,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:51,444 INFO L225 Difference]: With dead ends: 743 [2019-10-22 11:24:51,444 INFO L226 Difference]: Without dead ends: 372 [2019-10-22 11:24:51,445 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:24:51,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2019-10-22 11:24:51,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 251. [2019-10-22 11:24:51,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2019-10-22 11:24:51,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 324 transitions. [2019-10-22 11:24:51,467 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 324 transitions. Word has length 38 [2019-10-22 11:24:51,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:51,467 INFO L462 AbstractCegarLoop]: Abstraction has 251 states and 324 transitions. [2019-10-22 11:24:51,467 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:24:51,468 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 324 transitions. [2019-10-22 11:24:51,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-22 11:24:51,469 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:51,472 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:51,672 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:24:51,673 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:51,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:51,673 INFO L82 PathProgramCache]: Analyzing trace with hash -344388017, now seen corresponding path program 1 times [2019-10-22 11:24:51,673 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:24:51,674 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1312492853] [2019-10-22 11:24:51,674 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_699de048-d180-4836-bf29-c40c61b06e10/bin/utaipan/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:24:51,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:51,798 INFO L256 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:24:51,800 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:51,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:51,808 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:51,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:51,812 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1312492853] [2019-10-22 11:24:51,813 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:51,813 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-22 11:24:51,813 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971779892] [2019-10-22 11:24:51,813 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:24:51,813 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:24:51,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:24:51,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:24:51,814 INFO L87 Difference]: Start difference. First operand 251 states and 324 transitions. Second operand 3 states. [2019-10-22 11:24:51,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:51,826 INFO L93 Difference]: Finished difference Result 251 states and 324 transitions. [2019-10-22 11:24:51,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:24:51,826 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2019-10-22 11:24:51,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:51,827 INFO L225 Difference]: With dead ends: 251 [2019-10-22 11:24:51,827 INFO L226 Difference]: Without dead ends: 123 [2019-10-22 11:24:51,828 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 83 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 11:24:51,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2019-10-22 11:24:51,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2019-10-22 11:24:51,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2019-10-22 11:24:51,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 164 transitions. [2019-10-22 11:24:51,837 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 164 transitions. Word has length 43 [2019-10-22 11:24:51,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:51,837 INFO L462 AbstractCegarLoop]: Abstraction has 123 states and 164 transitions. [2019-10-22 11:24:51,838 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:24:51,838 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 164 transitions. [2019-10-22 11:24:51,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-10-22 11:24:51,839 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:51,839 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:52,039 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:24:52,040 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:52,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:52,040 INFO L82 PathProgramCache]: Analyzing trace with hash -445753367, now seen corresponding path program 1 times [2019-10-22 11:24:52,040 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:24:52,040 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [421513673] [2019-10-22 11:24:52,041 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_699de048-d180-4836-bf29-c40c61b06e10/bin/utaipan/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:24:52,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:52,165 INFO L256 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 11:24:52,167 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:52,192 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-22 11:24:52,192 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:52,231 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-22 11:24:52,232 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [421513673] [2019-10-22 11:24:52,232 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534687834] [2019-10-22 11:24:52,232 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_699de048-d180-4836-bf29-c40c61b06e10/bin/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:24:52,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:52,318 INFO L256 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 11:24:52,319 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:52,324 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-22 11:24:52,324 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:52,330 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-22 11:24:52,330 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-22 11:24:52,330 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5] total 9 [2019-10-22 11:24:52,330 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894644683] [2019-10-22 11:24:52,331 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-22 11:24:52,331 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:24:52,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-22 11:24:52,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-22 11:24:52,332 INFO L87 Difference]: Start difference. First operand 123 states and 164 transitions. Second operand 10 states. [2019-10-22 11:24:52,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:52,989 INFO L93 Difference]: Finished difference Result 751 states and 1038 transitions. [2019-10-22 11:24:52,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-10-22 11:24:52,989 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 48 [2019-10-22 11:24:52,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:52,991 INFO L225 Difference]: With dead ends: 751 [2019-10-22 11:24:52,991 INFO L226 Difference]: Without dead ends: 657 [2019-10-22 11:24:52,992 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2019-10-22 11:24:52,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2019-10-22 11:24:53,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 223. [2019-10-22 11:24:53,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2019-10-22 11:24:53,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 304 transitions. [2019-10-22 11:24:53,012 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 304 transitions. Word has length 48 [2019-10-22 11:24:53,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:53,013 INFO L462 AbstractCegarLoop]: Abstraction has 223 states and 304 transitions. [2019-10-22 11:24:53,013 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-22 11:24:53,013 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 304 transitions. [2019-10-22 11:24:53,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-10-22 11:24:53,013 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:53,014 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:53,414 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:24:53,415 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:53,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:53,415 INFO L82 PathProgramCache]: Analyzing trace with hash -2129580319, now seen corresponding path program 2 times [2019-10-22 11:24:53,415 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:24:53,415 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1411768251] [2019-10-22 11:24:53,415 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_699de048-d180-4836-bf29-c40c61b06e10/bin/utaipan/cvc4 Starting monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:24:55,101 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 11:24:55,102 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2019-10-22 11:24:57,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:24:57,461 INFO L168 tionRefinementEngine]: Strategy WALRUS found a feasible trace [2019-10-22 11:24:57,462 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 11:24:57,662 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:24:57,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:24:57 BoogieIcfgContainer [2019-10-22 11:24:57,834 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:24:57,834 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:24:57,834 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:24:57,834 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:24:57,835 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:24:47" (3/4) ... [2019-10-22 11:24:57,837 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 11:24:57,972 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_699de048-d180-4836-bf29-c40c61b06e10/bin/utaipan/witness.graphml [2019-10-22 11:24:57,972 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:24:57,974 INFO L168 Benchmark]: Toolchain (without parser) took 11659.53 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 268.4 MB). Free memory was 942.9 MB in the beginning and 1.2 GB in the end (delta: -286.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:24:57,974 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:24:57,974 INFO L168 Benchmark]: CACSL2BoogieTranslator took 592.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 942.9 MB in the beginning and 1.1 GB in the end (delta: -176.3 MB). Peak memory consumption was 30.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:57,974 INFO L168 Benchmark]: Boogie Procedure Inliner took 74.47 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 11:24:57,975 INFO L168 Benchmark]: Boogie Preprocessor took 50.36 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:57,975 INFO L168 Benchmark]: RCFGBuilder took 900.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 63.2 MB). Peak memory consumption was 63.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:57,975 INFO L168 Benchmark]: TraceAbstraction took 9899.83 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 129.5 MB). Free memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: -205.4 MB). Peak memory consumption was 306.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:57,975 INFO L168 Benchmark]: Witness Printer took 138.07 ms. Allocated memory is still 1.3 GB. Free memory was 1.3 GB in the beginning and 1.2 GB in the end (delta: 25.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:57,977 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 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 592.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 942.9 MB in the beginning and 1.1 GB in the end (delta: -176.3 MB). Peak memory consumption was 30.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 74.47 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 50.36 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 900.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 63.2 MB). Peak memory consumption was 63.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 9899.83 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 129.5 MB). Free memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: -205.4 MB). Peak memory consumption was 306.6 MB. Max. memory is 11.5 GB. * Witness Printer took 138.07 ms. Allocated memory is still 1.3 GB. Free memory was 1.3 GB in the beginning and 1.2 GB in the end (delta: 25.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 211]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L385] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L652] int pumpRunning = 0; [L653] int systemActive = 1; [L822] int cleanupTimeShifts = 4; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L895] int retValue_acc ; [L896] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L198] int retValue_acc ; [L201] retValue_acc = 1 [L202] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L902] tmp = valid_product() [L904] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L585] int splverifierCounter ; [L586] int tmp ; [L587] int tmp___0 ; [L588] int tmp___1 ; [L589] int tmp___2 ; [L592] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L594] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L596] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L602] tmp = __VERIFIER_nondet_int() [L604] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L612] tmp___0 = __VERIFIER_nondet_int() [L614] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L622] tmp___2 = __VERIFIER_nondet_int() [L624] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L659] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L666] COND TRUE \read(systemActive) [L688] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L691] COND TRUE ! pumpRunning [L803] int retValue_acc ; [L804] int tmp ; [L805] int tmp___0 ; [L127] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L130] COND FALSE !(waterLevel < 2) [L134] retValue_acc = 0 [L135] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L809] tmp = isHighWaterSensorDry() [L811] COND FALSE !(\read(tmp)) [L814] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L816] retValue_acc = tmp___0 [L817] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L693] tmp = isHighWaterLevel() [L695] COND TRUE \read(tmp) [L722] int tmp ; [L747] int retValue_acc ; [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L751] retValue_acc = isMethaneLevelCritical() [L753] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L726] tmp = isMethaneAlarm() [L728] COND FALSE !(\read(tmp)) [L716] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L144] int tmp ; [L145] int tmp___0 ; [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L149] tmp = getWaterLevel() [L151] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L594] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L596] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L602] tmp = __VERIFIER_nondet_int() [L604] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L612] tmp___0 = __VERIFIER_nondet_int() [L614] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L622] tmp___2 = __VERIFIER_nondet_int() [L624] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L659] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L666] COND TRUE \read(systemActive) [L688] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L691] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L144] int tmp ; [L145] int tmp___0 ; [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L149] tmp = getWaterLevel() [L151] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L594] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L596] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L602] tmp = __VERIFIER_nondet_int() [L604] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L612] tmp___0 = __VERIFIER_nondet_int() [L614] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L622] tmp___2 = __VERIFIER_nondet_int() [L624] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L659] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L666] COND TRUE \read(systemActive) [L688] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L691] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L144] int tmp ; [L145] int tmp___0 ; [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L149] tmp = getWaterLevel() [L151] COND TRUE tmp == 0 [L758] int retValue_acc ; [L761] retValue_acc = pumpRunning [L762] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L153] tmp___0 = isPumpRunning() [L155] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L211] __VERIFIER_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 87 locations, 3 error locations. Result: UNSAFE, OverallTime: 9.8s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 983 SDtfs, 2470 SDslu, 2242 SDs, 0 SdLazy, 442 SolverSat, 155 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 594 GetRequests, 540 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=343occurred 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: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 1159 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 353 NumberOfCodeBlocks, 353 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 562 ConstructedInterpolants, 0 QuantifiedInterpolants, 53100 SizeOfPredicates, 21 NumberOfNonLiveVariables, 1778 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 18 InterpolantComputations, 14 PerfectInterpolantSequences, 24/60 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...