./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-tiling/revcpyswp2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_541eace6-004b-4e27-88e8-c3b8f44c63bc/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_541eace6-004b-4e27-88e8-c3b8f44c63bc/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_541eace6-004b-4e27-88e8-c3b8f44c63bc/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_541eace6-004b-4e27-88e8-c3b8f44c63bc/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-tiling/revcpyswp2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_541eace6-004b-4e27-88e8-c3b8f44c63bc/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_541eace6-004b-4e27-88e8-c3b8f44c63bc/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 c33603c51ccbfe3503a4ea2b26bc8ca99338e04c ........................................................................................................................................................................................................................................................................................................................................................................... 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/run_dir_541eace6-004b-4e27-88e8-c3b8f44c63bc/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_541eace6-004b-4e27-88e8-c3b8f44c63bc/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_541eace6-004b-4e27-88e8-c3b8f44c63bc/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_541eace6-004b-4e27-88e8-c3b8f44c63bc/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-tiling/revcpyswp2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_541eace6-004b-4e27-88e8-c3b8f44c63bc/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_541eace6-004b-4e27-88e8-c3b8f44c63bc/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 c33603c51ccbfe3503a4ea2b26bc8ca99338e04c ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: This case should habe been handled by DER --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:46:42,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:46:42,662 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:46:42,672 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:46:42,675 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:46:42,676 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:46:42,678 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:46:42,686 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:46:42,691 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:46:42,695 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:46:42,696 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:46:42,697 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:46:42,697 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:46:42,699 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:46:42,700 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:46:42,701 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:46:42,702 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:46:42,703 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:46:42,705 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:46:42,709 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:46:42,713 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:46:42,716 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:46:42,717 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:46:42,718 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:46:42,720 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:46:42,720 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:46:42,721 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:46:42,722 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:46:42,723 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:46:42,724 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:46:42,724 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:46:42,725 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:46:42,725 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:46:42,726 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:46:42,727 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:46:42,727 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:46:42,728 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:46:42,728 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:46:42,728 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:46:42,729 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:46:42,730 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:46:42,731 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_541eace6-004b-4e27-88e8-c3b8f44c63bc/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:46:42,755 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:46:42,765 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:46:42,766 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:46:42,766 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:46:42,766 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:46:42,767 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:46:42,767 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:46:42,767 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:46:42,767 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:46:42,767 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:46:42,768 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:46:42,768 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:46:42,768 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:46:42,768 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:46:42,768 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:46:42,769 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:46:42,770 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:46:42,770 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:46:42,770 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:46:42,770 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:46:42,771 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:46:42,771 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:46:42,771 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:46:42,771 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:46:42,771 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:46:42,772 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:46:42,772 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:46:42,772 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:46:42,773 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:46:42,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:46:42,773 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:46:42,774 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:46:42,774 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:46:42,774 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:46:42,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:46:42,774 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:46:42,775 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:46:42,776 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/run_dir_541eace6-004b-4e27-88e8-c3b8f44c63bc/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 -> c33603c51ccbfe3503a4ea2b26bc8ca99338e04c [2019-11-26 02:46:42,942 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:46:42,956 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:46:42,959 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:46:42,960 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:46:42,960 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:46:42,961 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_541eace6-004b-4e27-88e8-c3b8f44c63bc/bin/utaipan/../../sv-benchmarks/c/array-tiling/revcpyswp2.c [2019-11-26 02:46:43,021 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_541eace6-004b-4e27-88e8-c3b8f44c63bc/bin/utaipan/data/2ba5f23ad/2f1812f86e454160b7f891ff6e2c3805/FLAGad8aa95c8 [2019-11-26 02:46:43,418 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:46:43,419 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_541eace6-004b-4e27-88e8-c3b8f44c63bc/sv-benchmarks/c/array-tiling/revcpyswp2.c [2019-11-26 02:46:43,425 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_541eace6-004b-4e27-88e8-c3b8f44c63bc/bin/utaipan/data/2ba5f23ad/2f1812f86e454160b7f891ff6e2c3805/FLAGad8aa95c8 [2019-11-26 02:46:43,834 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_541eace6-004b-4e27-88e8-c3b8f44c63bc/bin/utaipan/data/2ba5f23ad/2f1812f86e454160b7f891ff6e2c3805 [2019-11-26 02:46:43,836 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:46:43,838 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:46:43,839 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:46:43,839 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:46:43,842 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:46:43,843 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:46:43" (1/1) ... [2019-11-26 02:46:43,846 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34f7b29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:46:43, skipping insertion in model container [2019-11-26 02:46:43,846 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:46:43" (1/1) ... [2019-11-26 02:46:43,853 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:46:43,873 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:46:44,106 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:46:44,124 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:46:44,144 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:46:44,158 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:46:44,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:46:44 WrapperNode [2019-11-26 02:46:44,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:46:44,159 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:46:44,160 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:46:44,160 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:46:44,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:46:44" (1/1) ... [2019-11-26 02:46:44,180 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:46:44" (1/1) ... [2019-11-26 02:46:44,203 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:46:44,204 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:46:44,204 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:46:44,204 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:46:44,213 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:46:44" (1/1) ... [2019-11-26 02:46:44,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:46:44" (1/1) ... [2019-11-26 02:46:44,215 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:46:44" (1/1) ... [2019-11-26 02:46:44,216 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:46:44" (1/1) ... [2019-11-26 02:46:44,223 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:46:44" (1/1) ... [2019-11-26 02:46:44,230 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:46:44" (1/1) ... [2019-11-26 02:46:44,231 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:46:44" (1/1) ... [2019-11-26 02:46:44,234 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:46:44,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:46:44,235 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:46:44,235 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:46:44,236 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:46:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_541eace6-004b-4e27-88e8-c3b8f44c63bc/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 [2019-11-26 02:46:44,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-26 02:46:44,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-26 02:46:44,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:46:44,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:46:44,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-26 02:46:44,765 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:46:44,765 INFO L284 CfgBuilder]: Removed 11 assume(true) statements. [2019-11-26 02:46:44,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:46:44 BoogieIcfgContainer [2019-11-26 02:46:44,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:46:44,767 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:46:44,767 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:46:44,770 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:46:44,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:46:43" (1/3) ... [2019-11-26 02:46:44,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30e05779 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:46:44, skipping insertion in model container [2019-11-26 02:46:44,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:46:44" (2/3) ... [2019-11-26 02:46:44,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30e05779 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:46:44, skipping insertion in model container [2019-11-26 02:46:44,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:46:44" (3/3) ... [2019-11-26 02:46:44,773 INFO L109 eAbstractionObserver]: Analyzing ICFG revcpyswp2.c [2019-11-26 02:46:44,782 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:46:44,788 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:46:44,797 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:46:44,816 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:46:44,817 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:46:44,817 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:46:44,817 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:46:44,817 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:46:44,817 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:46:44,817 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:46:44,818 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:46:44,830 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2019-11-26 02:46:44,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-26 02:46:44,835 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:46:44,836 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:46:44,836 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:46:44,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:46:44,841 INFO L82 PathProgramCache]: Analyzing trace with hash -596952994, now seen corresponding path program 1 times [2019-11-26 02:46:44,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:46:44,848 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730441272] [2019-11-26 02:46:44,848 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:46:44,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:46:45,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:46:45,012 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730441272] [2019-11-26 02:46:45,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:46:45,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-26 02:46:45,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231859250] [2019-11-26 02:46:45,018 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:46:45,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:46:45,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:46:45,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:46:45,029 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 3 states. [2019-11-26 02:46:45,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:46:45,085 INFO L93 Difference]: Finished difference Result 24 states and 35 transitions. [2019-11-26 02:46:45,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:46:45,087 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-26 02:46:45,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:46:45,098 INFO L225 Difference]: With dead ends: 24 [2019-11-26 02:46:45,098 INFO L226 Difference]: Without dead ends: 12 [2019-11-26 02:46:45,102 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:46:45,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-11-26 02:46:45,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-26 02:46:45,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-26 02:46:45,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2019-11-26 02:46:45,132 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 16 transitions. Word has length 9 [2019-11-26 02:46:45,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:46:45,132 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 16 transitions. [2019-11-26 02:46:45,133 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:46:45,133 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 16 transitions. [2019-11-26 02:46:45,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-26 02:46:45,133 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:46:45,134 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:46:45,134 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:46:45,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:46:45,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1718561675, now seen corresponding path program 1 times [2019-11-26 02:46:45,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:46:45,134 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912305562] [2019-11-26 02:46:45,135 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:46:45,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:46:45,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 02:46:45,199 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912305562] [2019-11-26 02:46:45,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:46:45,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-26 02:46:45,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835374914] [2019-11-26 02:46:45,201 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:46:45,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:46:45,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:46:45,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:46:45,202 INFO L87 Difference]: Start difference. First operand 12 states and 16 transitions. Second operand 4 states. [2019-11-26 02:46:45,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:46:45,256 INFO L93 Difference]: Finished difference Result 27 states and 36 transitions. [2019-11-26 02:46:45,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:46:45,257 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-26 02:46:45,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:46:45,258 INFO L225 Difference]: With dead ends: 27 [2019-11-26 02:46:45,258 INFO L226 Difference]: Without dead ends: 20 [2019-11-26 02:46:45,259 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:46:45,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-26 02:46:45,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 15. [2019-11-26 02:46:45,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-26 02:46:45,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2019-11-26 02:46:45,264 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 10 [2019-11-26 02:46:45,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:46:45,264 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2019-11-26 02:46:45,264 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:46:45,264 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2019-11-26 02:46:45,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-26 02:46:45,265 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:46:45,265 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:46:45,266 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:46:45,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:46:45,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1623271333, now seen corresponding path program 1 times [2019-11-26 02:46:45,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:46:45,267 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025046050] [2019-11-26 02:46:45,267 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:46:45,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:46:45,347 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-26 02:46:45,347 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025046050] [2019-11-26 02:46:45,347 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869432214] [2019-11-26 02:46:45,348 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_541eace6-004b-4e27-88e8-c3b8f44c63bc/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 [2019-11-26 02:46:45,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:46:45,435 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-26 02:46:45,440 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:46:45,494 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-26 02:46:45,495 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:46:45,522 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-26 02:46:45,522 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1976828475] [2019-11-26 02:46:45,543 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2019-11-26 02:46:45,543 INFO L166 IcfgInterpreter]: Building call graph [2019-11-26 02:46:45,547 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-26 02:46:45,553 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-26 02:46:45,554 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-26 02:46:45,886 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2019-11-26 02:46:46,372 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2019-11-26 02:46:46,492 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2019-11-26 02:46:46,952 WARN L192 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 75 [2019-11-26 02:46:48,294 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:46:48,295 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: This case should habe been handled by DER at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.classify(DerPreprocessor.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.classify(DerPreprocessor.java:192) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.(DerPreprocessor.java:95) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:291) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:253) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:256) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.quantifier(PartialQuantifierElimination.java:146) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:279) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpretForSingleMarker(DagInterpreter.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:118) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) 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.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:297) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) 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:333) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) 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) [2019-11-26 02:46:48,302 INFO L168 Benchmark]: Toolchain (without parser) took 4462.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 214.4 MB). Free memory was 946.1 MB in the beginning and 840.5 MB in the end (delta: 105.5 MB). Peak memory consumption was 319.9 MB. Max. memory is 11.5 GB. [2019-11-26 02:46:48,303 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:46:48,304 INFO L168 Benchmark]: CACSL2BoogieTranslator took 320.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -187.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:46:48,305 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.17 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. [2019-11-26 02:46:48,306 INFO L168 Benchmark]: Boogie Preprocessor took 30.36 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. [2019-11-26 02:46:48,307 INFO L168 Benchmark]: RCFGBuilder took 532.02 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: 34.5 MB). Peak memory consumption was 34.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:46:48,308 INFO L168 Benchmark]: TraceAbstraction took 3531.69 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 72.9 MB). Free memory was 1.1 GB in the beginning and 840.5 MB in the end (delta: 258.0 MB). Peak memory consumption was 330.9 MB. Max. memory is 11.5 GB. [2019-11-26 02:46:48,312 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 320.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -187.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 44.17 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 30.36 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 532.02 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: 34.5 MB). Peak memory consumption was 34.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3531.69 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 72.9 MB). Free memory was 1.1 GB in the beginning and 840.5 MB in the end (delta: 258.0 MB). Peak memory consumption was 330.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: This case should habe been handled by DER de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: This case should habe been handled by DER: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.classify(DerPreprocessor.java:212) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-6b5699a [2019-11-26 02:46:50,076 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:46:50,077 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:46:50,088 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:46:50,088 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:46:50,089 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:46:50,091 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:46:50,092 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:46:50,094 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:46:50,095 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:46:50,096 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:46:50,097 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:46:50,098 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:46:50,098 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:46:50,099 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:46:50,100 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:46:50,101 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:46:50,102 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:46:50,104 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:46:50,106 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:46:50,107 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:46:50,108 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:46:50,109 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:46:50,110 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:46:50,112 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:46:50,113 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:46:50,113 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:46:50,114 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:46:50,115 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:46:50,116 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:46:50,116 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:46:50,117 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:46:50,117 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:46:50,118 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:46:50,119 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:46:50,119 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:46:50,120 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:46:50,120 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:46:50,120 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:46:50,121 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:46:50,122 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:46:50,123 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_541eace6-004b-4e27-88e8-c3b8f44c63bc/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-11-26 02:46:50,136 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:46:50,137 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:46:50,137 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:46:50,138 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:46:50,138 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:46:50,138 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:46:50,138 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:46:50,139 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:46:50,139 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:46:50,140 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:46:50,140 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:46:50,140 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:46:50,140 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:46:50,141 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:46:50,141 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:46:50,141 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:46:50,141 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-26 02:46:50,142 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-26 02:46:50,142 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-26 02:46:50,142 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:46:50,142 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:46:50,142 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 02:46:50,143 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:46:50,143 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:46:50,143 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-26 02:46:50,143 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:46:50,144 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:46:50,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:46:50,144 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:46:50,144 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:46:50,145 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:46:50,145 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-11-26 02:46:50,145 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-26 02:46:50,145 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:46:50,146 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:46:50,146 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/run_dir_541eace6-004b-4e27-88e8-c3b8f44c63bc/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 -> c33603c51ccbfe3503a4ea2b26bc8ca99338e04c [2019-11-26 02:46:50,488 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:46:50,502 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:46:50,505 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:46:50,506 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:46:50,506 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:46:50,507 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_541eace6-004b-4e27-88e8-c3b8f44c63bc/bin/utaipan/../../sv-benchmarks/c/array-tiling/revcpyswp2.c [2019-11-26 02:46:50,555 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_541eace6-004b-4e27-88e8-c3b8f44c63bc/bin/utaipan/data/6aaaa7629/4757fc9e15ea4e5c98ac8c0cea692ca2/FLAGf6fd13b2b [2019-11-26 02:46:50,936 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:46:50,937 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_541eace6-004b-4e27-88e8-c3b8f44c63bc/sv-benchmarks/c/array-tiling/revcpyswp2.c [2019-11-26 02:46:50,943 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_541eace6-004b-4e27-88e8-c3b8f44c63bc/bin/utaipan/data/6aaaa7629/4757fc9e15ea4e5c98ac8c0cea692ca2/FLAGf6fd13b2b [2019-11-26 02:46:50,955 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_541eace6-004b-4e27-88e8-c3b8f44c63bc/bin/utaipan/data/6aaaa7629/4757fc9e15ea4e5c98ac8c0cea692ca2 [2019-11-26 02:46:50,957 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:46:50,959 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:46:50,960 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:46:50,960 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:46:50,963 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:46:50,964 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:46:50" (1/1) ... [2019-11-26 02:46:50,967 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e802721 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:46:50, skipping insertion in model container [2019-11-26 02:46:50,967 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:46:50" (1/1) ... [2019-11-26 02:46:50,973 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:46:50,989 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:46:51,146 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:46:51,157 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:46:51,179 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:46:51,192 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:46:51,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:46:51 WrapperNode [2019-11-26 02:46:51,194 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:46:51,194 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:46:51,195 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:46:51,195 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:46:51,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:46:51" (1/1) ... [2019-11-26 02:46:51,308 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:46:51" (1/1) ... [2019-11-26 02:46:51,339 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:46:51,340 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:46:51,340 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:46:51,340 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:46:51,349 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:46:51" (1/1) ... [2019-11-26 02:46:51,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:46:51" (1/1) ... [2019-11-26 02:46:51,356 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:46:51" (1/1) ... [2019-11-26 02:46:51,357 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:46:51" (1/1) ... [2019-11-26 02:46:51,377 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:46:51" (1/1) ... [2019-11-26 02:46:51,387 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:46:51" (1/1) ... [2019-11-26 02:46:51,390 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:46:51" (1/1) ... [2019-11-26 02:46:51,393 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:46:51,394 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:46:51,394 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:46:51,394 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:46:51,395 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:46:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_541eace6-004b-4e27-88e8-c3b8f44c63bc/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 [2019-11-26 02:46:51,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-26 02:46:51,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-26 02:46:51,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:46:51,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:46:51,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-26 02:46:51,807 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:46:51,807 INFO L284 CfgBuilder]: Removed 11 assume(true) statements. [2019-11-26 02:46:51,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:46:51 BoogieIcfgContainer [2019-11-26 02:46:51,808 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:46:51,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:46:51,809 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:46:51,812 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:46:51,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:46:50" (1/3) ... [2019-11-26 02:46:51,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b5d8553 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:46:51, skipping insertion in model container [2019-11-26 02:46:51,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:46:51" (2/3) ... [2019-11-26 02:46:51,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b5d8553 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:46:51, skipping insertion in model container [2019-11-26 02:46:51,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:46:51" (3/3) ... [2019-11-26 02:46:51,814 INFO L109 eAbstractionObserver]: Analyzing ICFG revcpyswp2.c [2019-11-26 02:46:51,823 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:46:51,834 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:46:51,842 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:46:51,859 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:46:51,860 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:46:51,860 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:46:51,860 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:46:51,860 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:46:51,860 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:46:51,861 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:46:51,861 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:46:51,871 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2019-11-26 02:46:51,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-26 02:46:51,876 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:46:51,877 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:46:51,877 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:46:51,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:46:51,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1560213877, now seen corresponding path program 1 times [2019-11-26 02:46:51,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:46:51,893 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [322001115] [2019-11-26 02:46:51,894 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_541eace6-004b-4e27-88e8-c3b8f44c63bc/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 [2019-11-26 02:46:52,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:46:52,005 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-26 02:46:52,010 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:46:52,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:46:52,023 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:46:52,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:46:52,028 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [322001115] [2019-11-26 02:46:52,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:46:52,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-26 02:46:52,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045244256] [2019-11-26 02:46:52,034 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-26 02:46:52,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:46:52,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-26 02:46:52,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:46:52,048 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2019-11-26 02:46:52,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:46:52,062 INFO L93 Difference]: Finished difference Result 45 states and 64 transitions. [2019-11-26 02:46:52,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-26 02:46:52,063 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2019-11-26 02:46:52,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:46:52,070 INFO L225 Difference]: With dead ends: 45 [2019-11-26 02:46:52,070 INFO L226 Difference]: Without dead ends: 21 [2019-11-26 02:46:52,072 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:46:52,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-26 02:46:52,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-11-26 02:46:52,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-26 02:46:52,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2019-11-26 02:46:52,098 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 14 [2019-11-26 02:46:52,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:46:52,098 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2019-11-26 02:46:52,099 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-26 02:46:52,099 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2019-11-26 02:46:52,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-26 02:46:52,100 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:46:52,100 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:46:52,301 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:46:52,301 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:46:52,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:46:52,302 INFO L82 PathProgramCache]: Analyzing trace with hash 631559685, now seen corresponding path program 1 times [2019-11-26 02:46:52,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:46:52,303 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [397305416] [2019-11-26 02:46:52,303 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_541eace6-004b-4e27-88e8-c3b8f44c63bc/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 [2019-11-26 02:46:52,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:46:52,415 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-26 02:46:52,416 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:46:52,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:46:52,480 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:46:52,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:46:52,610 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [397305416] [2019-11-26 02:46:52,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:46:52,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-11-26 02:46:52,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541088052] [2019-11-26 02:46:52,612 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:46:52,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:46:52,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:46:52,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:46:52,613 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 5 states. [2019-11-26 02:46:52,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:46:52,824 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2019-11-26 02:46:52,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-26 02:46:52,825 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-11-26 02:46:52,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:46:52,826 INFO L225 Difference]: With dead ends: 40 [2019-11-26 02:46:52,826 INFO L226 Difference]: Without dead ends: 24 [2019-11-26 02:46:52,827 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:46:52,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-26 02:46:52,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-11-26 02:46:52,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-26 02:46:52,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2019-11-26 02:46:52,834 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 14 [2019-11-26 02:46:52,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:46:52,834 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-11-26 02:46:52,834 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:46:52,835 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2019-11-26 02:46:52,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-26 02:46:52,835 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:46:52,836 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:46:53,039 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:46:53,039 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:46:53,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:46:53,040 INFO L82 PathProgramCache]: Analyzing trace with hash -78261823, now seen corresponding path program 1 times [2019-11-26 02:46:53,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:46:53,042 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [252305852] [2019-11-26 02:46:53,042 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_541eace6-004b-4e27-88e8-c3b8f44c63bc/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 [2019-11-26 02:46:53,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:46:53,128 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-26 02:46:53,130 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:46:53,255 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:46:53,255 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:46:53,430 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:46:53,431 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [252305852] [2019-11-26 02:46:53,431 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556431498] [2019-11-26 02:46:53,431 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_541eace6-004b-4e27-88e8-c3b8f44c63bc/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:46:53,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:46:53,503 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-26 02:46:53,506 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:46:53,554 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-26 02:46:53,555 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:46:53,564 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-26 02:46:53,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2019-11-26 02:46:53,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [7, 7] total 14 [2019-11-26 02:46:53,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85404408] [2019-11-26 02:46:53,565 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-26 02:46:53,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:46:53,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-26 02:46:53,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2019-11-26 02:46:53,566 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 7 states. [2019-11-26 02:46:53,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:46:53,868 INFO L93 Difference]: Finished difference Result 53 states and 65 transitions. [2019-11-26 02:46:53,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:46:53,869 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2019-11-26 02:46:53,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:46:53,870 INFO L225 Difference]: With dead ends: 53 [2019-11-26 02:46:53,870 INFO L226 Difference]: Without dead ends: 40 [2019-11-26 02:46:53,871 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2019-11-26 02:46:53,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-11-26 02:46:53,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2019-11-26 02:46:53,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-26 02:46:53,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2019-11-26 02:46:53,883 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 18 [2019-11-26 02:46:53,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:46:53,883 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2019-11-26 02:46:53,883 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-26 02:46:53,883 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2019-11-26 02:46:53,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-26 02:46:53,884 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:46:53,885 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:46:54,289 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:46:54,289 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:46:54,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:46:54,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1519365621, now seen corresponding path program 1 times [2019-11-26 02:46:54,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:46:54,298 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1122749007] [2019-11-26 02:46:54,298 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_541eace6-004b-4e27-88e8-c3b8f44c63bc/bin/utaipan/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:46:54,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:46:54,628 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 37 conjunts are in the unsatisfiable core [2019-11-26 02:46:54,631 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:46:54,698 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:46:54,699 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 27 [2019-11-26 02:46:54,700 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:46:54,735 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:46:54,735 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:46:54,735 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:38, output treesize:31 [2019-11-26 02:46:55,595 WARN L192 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 55 [2019-11-26 02:46:55,597 INFO L343 Elim1Store]: treesize reduction 40, result has 88.1 percent of original size [2019-11-26 02:46:55,597 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 200 treesize of output 423 [2019-11-26 02:46:55,601 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,603 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:46:55,607 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-11-26 02:46:55,609 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,611 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,612 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,613 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,618 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,620 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,621 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,624 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,631 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,632 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,634 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,636 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,639 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,640 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,642 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,645 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,646 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,647 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,648 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,651 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,654 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,655 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,657 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,660 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,661 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,662 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,664 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,667 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,668 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,670 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,675 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,676 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:46:55,677 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,678 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-11-26 02:46:55,680 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-11-26 02:46:55,683 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:46:55,684 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,684 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-11-26 02:46:55,686 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-11-26 02:46:55,689 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:46:55,692 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-11-26 02:46:55,693 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,694 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,694 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,695 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,697 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,699 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,700 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,702 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,704 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,705 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,706 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,708 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,710 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,711 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,713 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,715 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,716 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,717 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,717 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,719 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,721 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,722 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,724 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,725 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,726 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,727 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,729 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,730 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,731 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,733 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,736 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,737 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:46:55,737 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,738 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-11-26 02:46:55,740 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-11-26 02:46:55,741 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,742 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-11-26 02:46:55,744 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-11-26 02:46:55,745 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:46:55,746 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,747 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-11-26 02:46:55,748 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-11-26 02:46:55,750 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:46:55,750 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-11-26 02:46:55,752 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-11-26 02:46:55,765 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:46:55,766 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:46:55,768 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:46:55,981 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:46:55,981 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: This case should habe been handled by DER at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.classify(DerPreprocessor.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.classify(DerPreprocessor.java:192) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.(DerPreprocessor.java:95) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:291) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:253) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:256) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:246) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:201) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:291) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:177) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) 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.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) 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:333) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) 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) [2019-11-26 02:46:55,984 INFO L168 Benchmark]: Toolchain (without parser) took 5025.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 960.4 MB in the beginning and 865.0 MB in the end (delta: 95.4 MB). Peak memory consumption was 241.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:46:55,985 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:46:55,985 INFO L168 Benchmark]: CACSL2BoogieTranslator took 234.08 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:46:55,986 INFO L168 Benchmark]: Boogie Procedure Inliner took 145.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 949.7 MB in the beginning and 1.1 GB in the end (delta: -185.7 MB). Peak memory consumption was 15.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:46:55,986 INFO L168 Benchmark]: Boogie Preprocessor took 53.39 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. [2019-11-26 02:46:55,987 INFO L168 Benchmark]: RCFGBuilder took 414.69 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: 27.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:46:55,987 INFO L168 Benchmark]: TraceAbstraction took 4174.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 865.0 MB in the end (delta: 243.3 MB). Peak memory consumption was 243.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:46:55,990 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 234.08 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.7 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 145.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 949.7 MB in the beginning and 1.1 GB in the end (delta: -185.7 MB). Peak memory consumption was 15.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 53.39 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 414.69 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: 27.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4174.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 865.0 MB in the end (delta: 243.3 MB). Peak memory consumption was 243.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: This case should habe been handled by DER de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: This case should habe been handled by DER: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.classify(DerPreprocessor.java:212) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...