./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/cggmp2005b.i --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_c9598d47-f4bc-47c2-9530-1c287579e755/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c9598d47-f4bc-47c2-9530-1c287579e755/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c9598d47-f4bc-47c2-9530-1c287579e755/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c9598d47-f4bc-47c2-9530-1c287579e755/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-lit/cggmp2005b.i -s /tmp/vcloud-vcloud-master/worker/working_dir_c9598d47-f4bc-47c2-9530-1c287579e755/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c9598d47-f4bc-47c2-9530-1c287579e755/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 7408fe5ba42f5c474832c90e26f3e7ef2342554c ...................................................................................................................................................................................................................................................................................................................................................................................................... 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_c9598d47-f4bc-47c2-9530-1c287579e755/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c9598d47-f4bc-47c2-9530-1c287579e755/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c9598d47-f4bc-47c2-9530-1c287579e755/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c9598d47-f4bc-47c2-9530-1c287579e755/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-lit/cggmp2005b.i -s /tmp/vcloud-vcloud-master/worker/working_dir_c9598d47-f4bc-47c2-9530-1c287579e755/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c9598d47-f4bc-47c2-9530-1c287579e755/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 7408fe5ba42f5c474832c90e26f3e7ef2342554c ............................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 11:25:27,752 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:25:27,754 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:25:27,765 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:25:27,765 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:25:27,766 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:25:27,767 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:25:27,768 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:25:27,770 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:25:27,773 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:25:27,774 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:25:27,775 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:25:27,775 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:25:27,776 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:25:27,776 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:25:27,777 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:25:27,778 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:25:27,778 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:25:27,786 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:25:27,787 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:25:27,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:25:27,789 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:25:27,789 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:25:27,790 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:25:27,795 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:25:27,795 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:25:27,795 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:25:27,796 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:25:27,796 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:25:27,797 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:25:27,797 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:25:27,797 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:25:27,798 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:25:27,801 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:25:27,802 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:25:27,802 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:25:27,803 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:25:27,803 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:25:27,803 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:25:27,804 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:25:27,804 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:25:27,805 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c9598d47-f4bc-47c2-9530-1c287579e755/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:25:27,827 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:25:27,828 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:25:27,828 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:25:27,829 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:25:27,829 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:25:27,829 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:25:27,829 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:25:27,829 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:25:27,829 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:25:27,830 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:25:27,830 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:25:27,830 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:25:27,830 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:25:27,831 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:25:27,831 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:25:27,831 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:25:27,831 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:25:27,831 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:25:27,831 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:25:27,832 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:25:27,832 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:25:27,832 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:25:27,832 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:25:27,832 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:25:27,833 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:25:27,833 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:25:27,833 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:25:27,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:25:27,833 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:25:27,833 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:25:27,834 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:25:27,834 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:25:27,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:25:27,834 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:25:27,834 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:25:27,835 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_c9598d47-f4bc-47c2-9530-1c287579e755/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 -> 7408fe5ba42f5c474832c90e26f3e7ef2342554c [2019-10-22 11:25:27,868 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:25:27,880 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:25:27,883 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:25:27,884 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:25:27,884 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:25:27,885 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c9598d47-f4bc-47c2-9530-1c287579e755/bin/utaipan/../../sv-benchmarks/c/loop-lit/cggmp2005b.i [2019-10-22 11:25:27,932 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c9598d47-f4bc-47c2-9530-1c287579e755/bin/utaipan/data/b4b9c8377/eb1c4f94999745e2a79e39e0acc018a1/FLAG9616d71f3 [2019-10-22 11:25:28,334 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:25:28,336 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c9598d47-f4bc-47c2-9530-1c287579e755/sv-benchmarks/c/loop-lit/cggmp2005b.i [2019-10-22 11:25:28,341 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c9598d47-f4bc-47c2-9530-1c287579e755/bin/utaipan/data/b4b9c8377/eb1c4f94999745e2a79e39e0acc018a1/FLAG9616d71f3 [2019-10-22 11:25:28,354 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c9598d47-f4bc-47c2-9530-1c287579e755/bin/utaipan/data/b4b9c8377/eb1c4f94999745e2a79e39e0acc018a1 [2019-10-22 11:25:28,358 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:25:28,360 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:25:28,361 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:28,361 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:25:28,366 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:25:28,366 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:28" (1/1) ... [2019-10-22 11:25:28,369 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@600d7116 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:28, skipping insertion in model container [2019-10-22 11:25:28,369 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:28" (1/1) ... [2019-10-22 11:25:28,375 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:25:28,389 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:25:28,549 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:28,554 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:25:28,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:28,640 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:25:28,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:28 WrapperNode [2019-10-22 11:25:28,640 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:28,641 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:28,641 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:25:28,641 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:25:28,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:28" (1/1) ... [2019-10-22 11:25:28,654 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:28" (1/1) ... [2019-10-22 11:25:28,667 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:28,667 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:25:28,667 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:25:28,668 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:25:28,673 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:28" (1/1) ... [2019-10-22 11:25:28,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:28" (1/1) ... [2019-10-22 11:25:28,674 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:28" (1/1) ... [2019-10-22 11:25:28,674 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:28" (1/1) ... [2019-10-22 11:25:28,676 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:28" (1/1) ... [2019-10-22 11:25:28,679 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:28" (1/1) ... [2019-10-22 11:25:28,680 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:28" (1/1) ... [2019-10-22 11:25:28,681 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:25:28,681 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:25:28,681 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:25:28,681 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:25:28,682 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c9598d47-f4bc-47c2-9530-1c287579e755/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 11:25:28,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:25:28,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:25:28,854 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:25:28,854 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-10-22 11:25:28,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:28 BoogieIcfgContainer [2019-10-22 11:25:28,855 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:25:28,856 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:25:28,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:25:28,859 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:25:28,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:25:28" (1/3) ... [2019-10-22 11:25:28,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f339669 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:28, skipping insertion in model container [2019-10-22 11:25:28,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:28" (2/3) ... [2019-10-22 11:25:28,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f339669 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:28, skipping insertion in model container [2019-10-22 11:25:28,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:28" (3/3) ... [2019-10-22 11:25:28,862 INFO L109 eAbstractionObserver]: Analyzing ICFG cggmp2005b.i [2019-10-22 11:25:28,870 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:25:28,874 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:25:28,882 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:25:28,902 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:25:28,903 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:25:28,903 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:25:28,903 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:25:28,903 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:25:28,903 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:25:28,903 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:25:28,903 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:25:28,913 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2019-10-22 11:25:28,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-10-22 11:25:28,918 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:28,918 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-10-22 11:25:28,920 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:28,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:28,924 INFO L82 PathProgramCache]: Analyzing trace with hash 30693764, now seen corresponding path program 1 times [2019-10-22 11:25:28,932 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:28,933 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220688564] [2019-10-22 11:25:28,933 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:28,933 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:28,933 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:28,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:29,005 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 11:25:29,005 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220688564] [2019-10-22 11:25:29,006 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:29,006 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:25:29,006 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652981367] [2019-10-22 11:25:29,009 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:25:29,010 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:29,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:25:29,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:25:29,021 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2019-10-22 11:25:29,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:29,033 INFO L93 Difference]: Finished difference Result 25 states and 37 transitions. [2019-10-22 11:25:29,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:25:29,034 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2019-10-22 11:25:29,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:29,041 INFO L225 Difference]: With dead ends: 25 [2019-10-22 11:25:29,042 INFO L226 Difference]: Without dead ends: 9 [2019-10-22 11:25:29,044 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 11:25:29,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-10-22 11:25:29,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-10-22 11:25:29,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-10-22 11:25:29,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2019-10-22 11:25:29,066 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 5 [2019-10-22 11:25:29,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:29,066 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 11 transitions. [2019-10-22 11:25:29,066 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:25:29,066 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2019-10-22 11:25:29,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-10-22 11:25:29,066 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:29,067 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-10-22 11:25:29,067 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:29,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:29,067 INFO L82 PathProgramCache]: Analyzing trace with hash 29829825, now seen corresponding path program 1 times [2019-10-22 11:25:29,067 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:29,067 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839803272] [2019-10-22 11:25:29,068 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:29,068 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:29,068 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:29,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:29,093 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 11:25:29,093 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839803272] [2019-10-22 11:25:29,093 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:29,094 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:25:29,094 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173226996] [2019-10-22 11:25:29,095 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:25:29,095 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:29,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:25:29,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:25:29,096 INFO L87 Difference]: Start difference. First operand 9 states and 11 transitions. Second operand 3 states. [2019-10-22 11:25:29,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:29,108 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2019-10-22 11:25:29,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:25:29,109 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-10-22 11:25:29,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:29,109 INFO L225 Difference]: With dead ends: 14 [2019-10-22 11:25:29,109 INFO L226 Difference]: Without dead ends: 10 [2019-10-22 11:25:29,110 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 11:25:29,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-10-22 11:25:29,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-10-22 11:25:29,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-10-22 11:25:29,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2019-10-22 11:25:29,113 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 5 [2019-10-22 11:25:29,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:29,113 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2019-10-22 11:25:29,113 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:25:29,113 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2019-10-22 11:25:29,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-22 11:25:29,114 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:29,114 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:25:29,114 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:29,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:29,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1133380143, now seen corresponding path program 1 times [2019-10-22 11:25:29,115 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:29,115 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753484122] [2019-10-22 11:25:29,116 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:29,116 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:29,116 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:29,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:29,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:29,134 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753484122] [2019-10-22 11:25:29,135 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:29,135 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:25:29,135 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892392166] [2019-10-22 11:25:29,135 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:25:29,135 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:29,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:25:29,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:25:29,136 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand 3 states. [2019-10-22 11:25:29,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:29,144 INFO L93 Difference]: Finished difference Result 19 states and 24 transitions. [2019-10-22 11:25:29,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:25:29,145 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-10-22 11:25:29,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:29,145 INFO L225 Difference]: With dead ends: 19 [2019-10-22 11:25:29,145 INFO L226 Difference]: Without dead ends: 11 [2019-10-22 11:25:29,146 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 11:25:29,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-10-22 11:25:29,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-10-22 11:25:29,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-10-22 11:25:29,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2019-10-22 11:25:29,148 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 9 [2019-10-22 11:25:29,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:29,149 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2019-10-22 11:25:29,149 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:25:29,149 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2019-10-22 11:25:29,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-22 11:25:29,149 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:29,149 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:25:29,149 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:29,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:29,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1245368368, now seen corresponding path program 1 times [2019-10-22 11:25:29,150 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:29,150 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457278311] [2019-10-22 11:25:29,150 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:29,151 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:29,151 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:29,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:29,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 11:25:29,181 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457278311] [2019-10-22 11:25:29,181 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016884186] [2019-10-22 11:25:29,181 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c9598d47-f4bc-47c2-9530-1c287579e755/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 11:25:29,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:29,240 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-22 11:25:29,245 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:25:29,261 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 11:25:29,261 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:25:29,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 11:25:29,282 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [166727308] [2019-10-22 11:25:29,288 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 11 [2019-10-22 11:25:29,332 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-10-22 11:25:29,333 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-22 11:25:29,608 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:25:29,608 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 11:25:29,613 INFO L168 Benchmark]: Toolchain (without parser) took 1252.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 941.0 MB in the beginning and 1.1 GB in the end (delta: -130.7 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:29,613 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 963.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:25:29,614 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 941.0 MB in the beginning and 1.1 GB in the end (delta: -200.5 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:29,614 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.38 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 11:25:29,615 INFO L168 Benchmark]: Boogie Preprocessor took 13.58 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 11:25:29,615 INFO L168 Benchmark]: RCFGBuilder took 174.33 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:29,616 INFO L168 Benchmark]: TraceAbstraction took 754.83 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: 50.1 MB). Peak memory consumption was 50.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:29,619 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 963.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 279.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 941.0 MB in the beginning and 1.1 GB in the end (delta: -200.5 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 26.38 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 13.58 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 174.33 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 754.83 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: 50.1 MB). Peak memory consumption was 50.1 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 11:25:31,616 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:25:31,618 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:25:31,627 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:25:31,628 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:25:31,628 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:25:31,629 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:25:31,631 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:25:31,633 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:25:31,633 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:25:31,634 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:25:31,635 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:25:31,635 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:25:31,636 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:25:31,637 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:25:31,638 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:25:31,639 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:25:31,639 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:25:31,641 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:25:31,642 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:25:31,644 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:25:31,645 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:25:31,645 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:25:31,646 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:25:31,648 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:25:31,648 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:25:31,649 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:25:31,649 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:25:31,650 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:25:31,651 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:25:31,651 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:25:31,652 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:25:31,652 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:25:31,653 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:25:31,654 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:25:31,654 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:25:31,655 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:25:31,655 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:25:31,655 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:25:31,656 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:25:31,656 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:25:31,657 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c9598d47-f4bc-47c2-9530-1c287579e755/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-10-22 11:25:31,676 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:25:31,676 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:25:31,677 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:25:31,677 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:25:31,677 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:25:31,677 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:25:31,677 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:25:31,677 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:25:31,677 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:25:31,678 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:25:31,678 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:25:31,681 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:25:31,681 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:25:31,682 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:25:31,682 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:25:31,682 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:25:31,682 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 11:25:31,682 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 11:25:31,682 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:25:31,683 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:25:31,683 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 11:25:31,683 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:25:31,683 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:25:31,683 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:25:31,683 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:25:31,683 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:25:31,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:25:31,684 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:25:31,684 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:25:31,684 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:25:31,684 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-10-22 11:25:31,684 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 11:25:31,685 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:25:31,685 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:25:31,685 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_c9598d47-f4bc-47c2-9530-1c287579e755/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 -> 7408fe5ba42f5c474832c90e26f3e7ef2342554c [2019-10-22 11:25:31,722 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:25:31,734 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:25:31,739 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:25:31,741 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:25:31,741 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:25:31,742 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c9598d47-f4bc-47c2-9530-1c287579e755/bin/utaipan/../../sv-benchmarks/c/loop-lit/cggmp2005b.i [2019-10-22 11:25:31,794 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c9598d47-f4bc-47c2-9530-1c287579e755/bin/utaipan/data/5b558148d/39a668dbe48b49dda4285e673f6e4dc8/FLAGd48bfbc54 [2019-10-22 11:25:32,154 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:25:32,156 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c9598d47-f4bc-47c2-9530-1c287579e755/sv-benchmarks/c/loop-lit/cggmp2005b.i [2019-10-22 11:25:32,161 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c9598d47-f4bc-47c2-9530-1c287579e755/bin/utaipan/data/5b558148d/39a668dbe48b49dda4285e673f6e4dc8/FLAGd48bfbc54 [2019-10-22 11:25:32,552 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c9598d47-f4bc-47c2-9530-1c287579e755/bin/utaipan/data/5b558148d/39a668dbe48b49dda4285e673f6e4dc8 [2019-10-22 11:25:32,554 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:25:32,555 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:25:32,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:32,556 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:25:32,560 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:25:32,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:32" (1/1) ... [2019-10-22 11:25:32,564 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40101a48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:32, skipping insertion in model container [2019-10-22 11:25:32,564 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:32" (1/1) ... [2019-10-22 11:25:32,571 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:25:32,586 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:25:32,757 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:32,767 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:25:32,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:32,800 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:25:32,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:32 WrapperNode [2019-10-22 11:25:32,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:32,802 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:32,802 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:25:32,802 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:25:32,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:32" (1/1) ... [2019-10-22 11:25:32,815 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:32" (1/1) ... [2019-10-22 11:25:32,902 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:32,902 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:25:32,902 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:25:32,902 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:25:32,914 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:32" (1/1) ... [2019-10-22 11:25:32,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:32" (1/1) ... [2019-10-22 11:25:32,915 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:32" (1/1) ... [2019-10-22 11:25:32,915 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:32" (1/1) ... [2019-10-22 11:25:32,918 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:32" (1/1) ... [2019-10-22 11:25:32,923 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:32" (1/1) ... [2019-10-22 11:25:32,924 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:32" (1/1) ... [2019-10-22 11:25:32,925 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:25:32,926 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:25:32,926 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:25:32,926 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:25:32,928 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c9598d47-f4bc-47c2-9530-1c287579e755/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 11:25:32,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:25:32,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:25:33,121 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:25:33,121 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-10-22 11:25:33,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:33 BoogieIcfgContainer [2019-10-22 11:25:33,122 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:25:33,123 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:25:33,123 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:25:33,126 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:25:33,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:25:32" (1/3) ... [2019-10-22 11:25:33,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5faa03f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:33, skipping insertion in model container [2019-10-22 11:25:33,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:32" (2/3) ... [2019-10-22 11:25:33,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5faa03f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:33, skipping insertion in model container [2019-10-22 11:25:33,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:33" (3/3) ... [2019-10-22 11:25:33,129 INFO L109 eAbstractionObserver]: Analyzing ICFG cggmp2005b.i [2019-10-22 11:25:33,137 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:25:33,143 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:25:33,151 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:25:33,173 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:25:33,174 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:25:33,174 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:25:33,174 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:25:33,174 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:25:33,174 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:25:33,176 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:25:33,176 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:25:33,186 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2019-10-22 11:25:33,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-10-22 11:25:33,191 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:33,192 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-10-22 11:25:33,194 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:33,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:33,199 INFO L82 PathProgramCache]: Analyzing trace with hash 30693764, now seen corresponding path program 1 times [2019-10-22 11:25:33,209 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:25:33,209 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [939881645] [2019-10-22 11:25:33,210 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c9598d47-f4bc-47c2-9530-1c287579e755/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 11:25:33,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:33,256 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-22 11:25:33,260 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:25:33,272 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 11:25:33,272 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:25:33,275 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 11:25:33,276 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [939881645] [2019-10-22 11:25:33,276 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:33,277 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-10-22 11:25:33,277 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965180009] [2019-10-22 11:25:33,281 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:25:33,281 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:25:33,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:25:33,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:25:33,296 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2019-10-22 11:25:33,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:33,313 INFO L93 Difference]: Finished difference Result 25 states and 37 transitions. [2019-10-22 11:25:33,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:25:33,315 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2019-10-22 11:25:33,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:33,323 INFO L225 Difference]: With dead ends: 25 [2019-10-22 11:25:33,323 INFO L226 Difference]: Without dead ends: 9 [2019-10-22 11:25:33,326 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 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 11:25:33,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-10-22 11:25:33,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-10-22 11:25:33,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-10-22 11:25:33,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2019-10-22 11:25:33,354 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 5 [2019-10-22 11:25:33,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:33,354 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 11 transitions. [2019-10-22 11:25:33,354 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:25:33,354 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2019-10-22 11:25:33,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-10-22 11:25:33,355 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:33,355 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-10-22 11:25:33,556 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:25:33,556 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:33,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:33,556 INFO L82 PathProgramCache]: Analyzing trace with hash 29829825, now seen corresponding path program 1 times [2019-10-22 11:25:33,556 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:25:33,557 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [146914920] [2019-10-22 11:25:33,557 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c9598d47-f4bc-47c2-9530-1c287579e755/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 11:25:33,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:33,585 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:25:33,585 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:25:33,620 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 11:25:33,620 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:25:33,627 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 11:25:33,628 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [146914920] [2019-10-22 11:25:33,628 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:33,628 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-10-22 11:25:33,628 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269334248] [2019-10-22 11:25:33,629 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:25:33,630 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:25:33,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:25:33,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:25:33,630 INFO L87 Difference]: Start difference. First operand 9 states and 11 transitions. Second operand 4 states. [2019-10-22 11:25:33,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:33,697 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2019-10-22 11:25:33,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:25:33,697 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-10-22 11:25:33,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:33,698 INFO L225 Difference]: With dead ends: 18 [2019-10-22 11:25:33,698 INFO L226 Difference]: Without dead ends: 14 [2019-10-22 11:25:33,699 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 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 11:25:33,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-10-22 11:25:33,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-10-22 11:25:33,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-10-22 11:25:33,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2019-10-22 11:25:33,703 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 18 transitions. Word has length 5 [2019-10-22 11:25:33,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:33,704 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 18 transitions. [2019-10-22 11:25:33,704 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:25:33,704 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 18 transitions. [2019-10-22 11:25:33,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-22 11:25:33,704 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:33,705 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2019-10-22 11:25:33,905 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:25:33,905 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:33,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:33,906 INFO L82 PathProgramCache]: Analyzing trace with hash 236941981, now seen corresponding path program 1 times [2019-10-22 11:25:33,906 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:25:33,907 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [537858971] [2019-10-22 11:25:33,907 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c9598d47-f4bc-47c2-9530-1c287579e755/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 11:25:33,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:33,934 INFO L256 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 11:25:33,935 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:25:33,957 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-22 11:25:33,957 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:25:33,977 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-22 11:25:33,977 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [537858971] [2019-10-22 11:25:33,977 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:33,978 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2019-10-22 11:25:33,978 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485100852] [2019-10-22 11:25:33,978 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:25:33,978 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:25:33,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:25:33,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:25:33,979 INFO L87 Difference]: Start difference. First operand 14 states and 18 transitions. Second operand 5 states. [2019-10-22 11:25:34,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:34,004 INFO L93 Difference]: Finished difference Result 22 states and 30 transitions. [2019-10-22 11:25:34,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:25:34,004 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-10-22 11:25:34,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:34,005 INFO L225 Difference]: With dead ends: 22 [2019-10-22 11:25:34,005 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 11:25:34,005 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:25:34,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 11:25:34,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 11:25:34,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 11:25:34,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 11:25:34,006 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2019-10-22 11:25:34,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:34,006 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 11:25:34,006 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:25:34,006 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 11:25:34,007 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 11:25:34,207 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:25:34,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-22 11:25:34,266 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-22 11:25:34,266 INFO L439 ceAbstractionStarter]: At program point L21-2(lines 21 23) the Hoare annotation is: (= (_ bv4 32) ULTIMATE.start_main_~k~0) [2019-10-22 11:25:34,267 INFO L439 ceAbstractionStarter]: At program point L21-3(lines 15 24) the Hoare annotation is: (or (= (_ bv4 32) ULTIMATE.start_main_~k~0) (= (_ bv0 32) ULTIMATE.start_main_~i~0)) [2019-10-22 11:25:34,267 INFO L439 ceAbstractionStarter]: At program point L17-2(lines 17 19) the Hoare annotation is: (or (= (_ bv4 32) ULTIMATE.start_main_~k~0) (bvsle ULTIMATE.start_main_~i~0 (_ bv100 32))) [2019-10-22 11:25:34,267 INFO L443 ceAbstractionStarter]: For program point L17-3(lines 17 19) no Hoare annotation was computed. [2019-10-22 11:25:34,267 INFO L443 ceAbstractionStarter]: For program point L15-2(lines 15 24) no Hoare annotation was computed. [2019-10-22 11:25:34,267 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-22 11:25:34,267 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-10-22 11:25:34,268 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-22 11:25:34,268 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-22 11:25:34,268 INFO L446 ceAbstractionStarter]: At program point L26(lines 10 27) the Hoare annotation is: true [2019-10-22 11:25:34,268 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-22 11:25:34,268 INFO L446 ceAbstractionStarter]: At program point L4-2(lines 3 8) the Hoare annotation is: true [2019-10-22 11:25:34,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:25:34 BoogieIcfgContainer [2019-10-22 11:25:34,286 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:25:34,286 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:25:34,292 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:25:34,292 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:25:34,293 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:33" (3/4) ... [2019-10-22 11:25:34,296 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 11:25:34,309 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-10-22 11:25:34,310 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-10-22 11:25:34,348 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_c9598d47-f4bc-47c2-9530-1c287579e755/bin/utaipan/witness.graphml [2019-10-22 11:25:34,349 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:25:34,351 INFO L168 Benchmark]: Toolchain (without parser) took 1794.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 951.0 MB in the beginning and 1.0 GB in the end (delta: -88.4 MB). Peak memory consumption was 34.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:34,351 INFO L168 Benchmark]: CDTParser took 0.14 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 11:25:34,351 INFO L168 Benchmark]: CACSL2BoogieTranslator took 244.94 ms. Allocated memory is still 1.0 GB. Free memory was 951.0 MB in the beginning and 940.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:34,352 INFO L168 Benchmark]: Boogie Procedure Inliner took 100.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -177.9 MB). Peak memory consumption was 12.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:34,352 INFO L168 Benchmark]: Boogie Preprocessor took 23.60 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 11:25:34,353 INFO L168 Benchmark]: RCFGBuilder took 196.62 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: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:34,353 INFO L168 Benchmark]: TraceAbstraction took 1162.72 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: 59.8 MB). Peak memory consumption was 59.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:34,353 INFO L168 Benchmark]: Witness Printer took 62.45 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:25:34,356 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 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 244.94 ms. Allocated memory is still 1.0 GB. Free memory was 951.0 MB in the beginning and 940.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 100.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -177.9 MB). Peak memory consumption was 12.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.60 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 196.62 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: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1162.72 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: 59.8 MB). Peak memory consumption was 59.8 MB. Max. memory is 11.5 GB. * Witness Printer took 62.45 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 4bv32 == k || ~bvsle32(i, 100bv32) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 4bv32 == k || 0bv32 == i - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 4bv32 == k - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Result: SAFE, OverallTime: 1.0s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 34 SDtfs, 9 SDslu, 24 SDs, 0 SdLazy, 11 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 14 NumberOfFragments, 19 HoareAnnotationTreeSize, 5 FomulaSimplifications, 15 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 596 SizeOfPredicates, 4 NumberOfNonLiveVariables, 40 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 12/12 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 correct! Received shutdown request...