./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_17f5076f-47ee-42c3-b247-cd0edba3fb49/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_17f5076f-47ee-42c3-b247-cd0edba3fb49/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_17f5076f-47ee-42c3-b247-cd0edba3fb49/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_17f5076f-47ee-42c3-b247-cd0edba3fb49/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength5.c -s /tmp/vcloud-vcloud-master/worker/run_dir_17f5076f-47ee-42c3-b247-cd0edba3fb49/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_17f5076f-47ee-42c3-b247-cd0edba3fb49/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 32d9f155778c5c4efaa55d37fdad329bb0d271b5 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 12:03:12,560 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 12:03:12,561 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 12:03:12,569 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 12:03:12,569 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 12:03:12,570 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 12:03:12,571 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 12:03:12,573 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 12:03:12,574 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 12:03:12,575 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 12:03:12,576 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 12:03:12,577 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 12:03:12,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 12:03:12,578 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 12:03:12,579 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 12:03:12,580 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 12:03:12,581 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 12:03:12,582 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 12:03:12,584 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 12:03:12,585 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 12:03:12,587 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 12:03:12,588 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 12:03:12,588 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 12:03:12,589 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 12:03:12,591 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 12:03:12,592 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 12:03:12,592 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 12:03:12,593 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 12:03:12,593 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 12:03:12,594 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 12:03:12,594 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 12:03:12,594 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 12:03:12,595 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 12:03:12,595 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 12:03:12,596 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 12:03:12,596 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 12:03:12,597 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 12:03:12,597 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 12:03:12,597 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 12:03:12,598 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 12:03:12,599 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 12:03:12,599 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_17f5076f-47ee-42c3-b247-cd0edba3fb49/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2019-12-07 12:03:12,609 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 12:03:12,610 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 12:03:12,610 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 12:03:12,610 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 12:03:12,610 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 12:03:12,610 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 12:03:12,611 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 12:03:12,611 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 12:03:12,611 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 12:03:12,611 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 12:03:12,611 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 12:03:12,611 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 12:03:12,611 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 12:03:12,612 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 12:03:12,612 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 12:03:12,612 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 12:03:12,612 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 12:03:12,612 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 12:03:12,612 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 12:03:12,613 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 12:03:12,613 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 12:03:12,613 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 12:03:12,613 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 12:03:12,613 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-12-07 12:03:12,613 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-12-07 12:03:12,613 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-12-07 12:03:12,613 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 12:03:12,613 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 12:03:12,613 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 12:03:12,614 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 12:03:12,614 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 12:03:12,614 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 12:03:12,614 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 12:03:12,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 12:03:12,614 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 12:03:12,614 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 12:03:12,614 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 12:03:12,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 12:03:12,615 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 12:03:12,615 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 12:03:12,615 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_17f5076f-47ee-42c3-b247-cd0edba3fb49/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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> 32d9f155778c5c4efaa55d37fdad329bb0d271b5 [2019-12-07 12:03:12,712 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 12:03:12,719 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 12:03:12,722 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 12:03:12,723 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 12:03:12,723 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 12:03:12,723 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_17f5076f-47ee-42c3-b247-cd0edba3fb49/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength5.c [2019-12-07 12:03:12,760 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_17f5076f-47ee-42c3-b247-cd0edba3fb49/bin/utaipan/data/ad5f339db/eeafd06bf30247fcb960f79a541091c7/FLAG78092246b [2019-12-07 12:03:13,165 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 12:03:13,165 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_17f5076f-47ee-42c3-b247-cd0edba3fb49/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength5.c [2019-12-07 12:03:13,169 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_17f5076f-47ee-42c3-b247-cd0edba3fb49/bin/utaipan/data/ad5f339db/eeafd06bf30247fcb960f79a541091c7/FLAG78092246b [2019-12-07 12:03:13,177 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_17f5076f-47ee-42c3-b247-cd0edba3fb49/bin/utaipan/data/ad5f339db/eeafd06bf30247fcb960f79a541091c7 [2019-12-07 12:03:13,179 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 12:03:13,180 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 12:03:13,181 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 12:03:13,181 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 12:03:13,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 12:03:13,183 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:03:13" (1/1) ... [2019-12-07 12:03:13,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b08d2fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:03:13, skipping insertion in model container [2019-12-07 12:03:13,185 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:03:13" (1/1) ... [2019-12-07 12:03:13,190 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 12:03:13,200 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 12:03:13,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 12:03:13,338 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 12:03:13,349 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 12:03:13,359 INFO L208 MainTranslator]: Completed translation [2019-12-07 12:03:13,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:03:13 WrapperNode [2019-12-07 12:03:13,360 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 12:03:13,360 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 12:03:13,360 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 12:03:13,361 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 12:03:13,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:03:13" (1/1) ... [2019-12-07 12:03:13,371 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:03:13" (1/1) ... [2019-12-07 12:03:13,384 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 12:03:13,384 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 12:03:13,384 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 12:03:13,384 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 12:03:13,390 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:03:13" (1/1) ... [2019-12-07 12:03:13,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:03:13" (1/1) ... [2019-12-07 12:03:13,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:03:13" (1/1) ... [2019-12-07 12:03:13,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:03:13" (1/1) ... [2019-12-07 12:03:13,395 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:03:13" (1/1) ... [2019-12-07 12:03:13,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:03:13" (1/1) ... [2019-12-07 12:03:13,398 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:03:13" (1/1) ... [2019-12-07 12:03:13,400 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 12:03:13,400 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 12:03:13,400 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 12:03:13,401 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 12:03:13,401 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:03:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_17f5076f-47ee-42c3-b247-cd0edba3fb49/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 [2019-12-07 12:03:13,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 12:03:13,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 12:03:13,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 12:03:13,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 12:03:13,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 12:03:13,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 12:03:13,651 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 12:03:13,651 INFO L287 CfgBuilder]: Removed 9 assume(true) statements. [2019-12-07 12:03:13,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:03:13 BoogieIcfgContainer [2019-12-07 12:03:13,652 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 12:03:13,653 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 12:03:13,653 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 12:03:13,654 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 12:03:13,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:03:13" (1/3) ... [2019-12-07 12:03:13,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73b0923e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:03:13, skipping insertion in model container [2019-12-07 12:03:13,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:03:13" (2/3) ... [2019-12-07 12:03:13,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73b0923e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:03:13, skipping insertion in model container [2019-12-07 12:03:13,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:03:13" (3/3) ... [2019-12-07 12:03:13,656 INFO L109 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength5.c [2019-12-07 12:03:13,662 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 12:03:13,667 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2019-12-07 12:03:13,674 INFO L249 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2019-12-07 12:03:13,686 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 12:03:13,686 INFO L374 AbstractCegarLoop]: Hoare is false [2019-12-07 12:03:13,686 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 12:03:13,686 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 12:03:13,686 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 12:03:13,686 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 12:03:13,686 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 12:03:13,686 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 12:03:13,695 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-12-07 12:03:13,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-07 12:03:13,700 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:03:13,700 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-07 12:03:13,701 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 12:03:13,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:03:13,704 INFO L82 PathProgramCache]: Analyzing trace with hash 3150815, now seen corresponding path program 1 times [2019-12-07 12:03:13,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 12:03:13,710 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966985087] [2019-12-07 12:03:13,710 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:03:13,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:03:13,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:03:13,802 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966985087] [2019-12-07 12:03:13,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:03:13,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 12:03:13,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659195195] [2019-12-07 12:03:13,806 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 12:03:13,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 12:03:13,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 12:03:13,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 12:03:13,818 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2019-12-07 12:03:13,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:03:13,857 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2019-12-07 12:03:13,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 12:03:13,859 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-07 12:03:13,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:03:13,865 INFO L225 Difference]: With dead ends: 37 [2019-12-07 12:03:13,865 INFO L226 Difference]: Without dead ends: 35 [2019-12-07 12:03:13,866 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 12:03:13,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-12-07 12:03:13,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 20. [2019-12-07 12:03:13,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-12-07 12:03:13,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2019-12-07 12:03:13,888 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 4 [2019-12-07 12:03:13,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:03:13,888 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2019-12-07 12:03:13,888 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 12:03:13,889 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2019-12-07 12:03:13,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-07 12:03:13,889 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:03:13,889 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-07 12:03:13,889 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 12:03:13,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:03:13,889 INFO L82 PathProgramCache]: Analyzing trace with hash 3078660, now seen corresponding path program 1 times [2019-12-07 12:03:13,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 12:03:13,890 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65742234] [2019-12-07 12:03:13,890 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:03:13,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:03:13,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:03:13,924 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65742234] [2019-12-07 12:03:13,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:03:13,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 12:03:13,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605329283] [2019-12-07 12:03:13,926 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 12:03:13,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 12:03:13,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 12:03:13,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 12:03:13,926 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 4 states. [2019-12-07 12:03:13,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:03:13,974 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2019-12-07 12:03:13,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 12:03:13,974 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-12-07 12:03:13,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:03:13,975 INFO L225 Difference]: With dead ends: 45 [2019-12-07 12:03:13,975 INFO L226 Difference]: Without dead ends: 45 [2019-12-07 12:03:13,975 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 12:03:13,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-12-07 12:03:13,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 21. [2019-12-07 12:03:13,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-12-07 12:03:13,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2019-12-07 12:03:13,979 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 4 [2019-12-07 12:03:13,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:03:13,979 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2019-12-07 12:03:13,979 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 12:03:13,979 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2019-12-07 12:03:13,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-07 12:03:13,979 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:03:13,979 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-07 12:03:13,979 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 12:03:13,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:03:13,980 INFO L82 PathProgramCache]: Analyzing trace with hash 3080752, now seen corresponding path program 1 times [2019-12-07 12:03:13,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 12:03:13,980 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286395456] [2019-12-07 12:03:13,980 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:03:13,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:03:14,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:03:14,007 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286395456] [2019-12-07 12:03:14,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:03:14,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 12:03:14,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001092256] [2019-12-07 12:03:14,008 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 12:03:14,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 12:03:14,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 12:03:14,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 12:03:14,008 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 3 states. [2019-12-07 12:03:14,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:03:14,022 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2019-12-07 12:03:14,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 12:03:14,023 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-07 12:03:14,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:03:14,023 INFO L225 Difference]: With dead ends: 19 [2019-12-07 12:03:14,023 INFO L226 Difference]: Without dead ends: 19 [2019-12-07 12:03:14,024 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 12:03:14,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-12-07 12:03:14,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-12-07 12:03:14,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-12-07 12:03:14,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2019-12-07 12:03:14,026 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 4 [2019-12-07 12:03:14,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:03:14,026 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2019-12-07 12:03:14,026 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 12:03:14,026 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2019-12-07 12:03:14,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-07 12:03:14,026 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:03:14,026 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-07 12:03:14,026 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 12:03:14,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:03:14,027 INFO L82 PathProgramCache]: Analyzing trace with hash 3080753, now seen corresponding path program 1 times [2019-12-07 12:03:14,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 12:03:14,027 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177063485] [2019-12-07 12:03:14,027 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:03:14,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:03:14,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:03:14,055 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177063485] [2019-12-07 12:03:14,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:03:14,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 12:03:14,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456730921] [2019-12-07 12:03:14,056 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 12:03:14,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 12:03:14,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 12:03:14,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 12:03:14,056 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 3 states. [2019-12-07 12:03:14,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:03:14,073 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2019-12-07 12:03:14,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 12:03:14,074 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-07 12:03:14,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:03:14,074 INFO L225 Difference]: With dead ends: 20 [2019-12-07 12:03:14,074 INFO L226 Difference]: Without dead ends: 20 [2019-12-07 12:03:14,074 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 12:03:14,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-12-07 12:03:14,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-12-07 12:03:14,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-12-07 12:03:14,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2019-12-07 12:03:14,076 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 4 [2019-12-07 12:03:14,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:03:14,077 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2019-12-07 12:03:14,077 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 12:03:14,077 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2019-12-07 12:03:14,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-07 12:03:14,077 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:03:14,077 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:03:14,077 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 12:03:14,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:03:14,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1585672413, now seen corresponding path program 1 times [2019-12-07 12:03:14,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 12:03:14,078 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455746711] [2019-12-07 12:03:14,078 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:03:14,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:03:14,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:03:14,107 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455746711] [2019-12-07 12:03:14,107 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642555954] [2019-12-07 12:03:14,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_17f5076f-47ee-42c3-b247-cd0edba3fb49/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 [2019-12-07 12:03:14,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:03:14,137 INFO L264 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 12:03:14,140 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:03:14,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:03:14,156 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:03:14,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:03:14,169 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1802708853] [2019-12-07 12:03:14,184 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2019-12-07 12:03:14,184 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 12:03:14,188 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 12:03:14,192 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 12:03:14,193 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 12:03:14,409 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 12:03:14,453 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 12:03:14,616 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 12:03:15,046 WARN L192 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 89 [2019-12-07 12:03:15,356 WARN L192 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 67 [2019-12-07 12:03:15,539 WARN L192 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 65 [2019-12-07 12:03:15,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-12-07 12:03:15,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3, 3, 3] total 9 [2019-12-07 12:03:15,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685868140] [2019-12-07 12:03:15,542 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 12:03:15,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 12:03:15,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 12:03:15,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2019-12-07 12:03:15,542 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 5 states. [2019-12-07 12:03:15,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:03:15,620 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2019-12-07 12:03:15,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 12:03:15,620 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-12-07 12:03:15,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:03:15,621 INFO L225 Difference]: With dead ends: 25 [2019-12-07 12:03:15,621 INFO L226 Difference]: Without dead ends: 25 [2019-12-07 12:03:15,621 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2019-12-07 12:03:15,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-12-07 12:03:15,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2019-12-07 12:03:15,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-12-07 12:03:15,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2019-12-07 12:03:15,624 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 7 [2019-12-07 12:03:15,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:03:15,624 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-12-07 12:03:15,624 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 12:03:15,624 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2019-12-07 12:03:15,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 12:03:15,624 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:03:15,624 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2019-12-07 12:03:15,825 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:03:15,826 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 12:03:15,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:03:15,827 INFO L82 PathProgramCache]: Analyzing trace with hash 596146973, now seen corresponding path program 1 times [2019-12-07 12:03:15,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 12:03:15,828 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271514756] [2019-12-07 12:03:15,828 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:03:15,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:03:15,899 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:03:15,899 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271514756] [2019-12-07 12:03:15,899 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521607920] [2019-12-07 12:03:15,899 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_17f5076f-47ee-42c3-b247-cd0edba3fb49/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:03:15,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:03:15,925 INFO L264 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 12:03:15,926 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:03:15,949 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:03:15,950 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:03:15,967 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:03:15,968 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [260789215] [2019-12-07 12:03:15,969 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2019-12-07 12:03:15,969 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 12:03:15,969 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 12:03:15,969 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 12:03:15,969 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 12:03:16,029 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 12:03:16,135 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 12:03:16,170 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 12:03:16,486 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 12:03:16,838 WARN L192 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 91 [2019-12-07 12:03:17,162 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 12:03:17,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 12:03:17,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2019-12-07 12:03:17,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202489701] [2019-12-07 12:03:17,163 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-07 12:03:17,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 12:03:17,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 12:03:17,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2019-12-07 12:03:17,164 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 10 states. [2019-12-07 12:03:17,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:03:17,284 INFO L93 Difference]: Finished difference Result 64 states and 71 transitions. [2019-12-07 12:03:17,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-12-07 12:03:17,284 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2019-12-07 12:03:17,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:03:17,286 INFO L225 Difference]: With dead ends: 64 [2019-12-07 12:03:17,286 INFO L226 Difference]: Without dead ends: 64 [2019-12-07 12:03:17,286 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=126, Invalid=426, Unknown=0, NotChecked=0, Total=552 [2019-12-07 12:03:17,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2019-12-07 12:03:17,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 33. [2019-12-07 12:03:17,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-12-07 12:03:17,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2019-12-07 12:03:17,290 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 10 [2019-12-07 12:03:17,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:03:17,290 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2019-12-07 12:03:17,290 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-07 12:03:17,290 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2019-12-07 12:03:17,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 12:03:17,290 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:03:17,290 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2019-12-07 12:03:17,491 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:03:17,492 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 12:03:17,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:03:17,493 INFO L82 PathProgramCache]: Analyzing trace with hash 596149066, now seen corresponding path program 1 times [2019-12-07 12:03:17,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 12:03:17,493 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061797340] [2019-12-07 12:03:17,494 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:03:17,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:03:17,591 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 12:03:17,592 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061797340] [2019-12-07 12:03:17,592 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715080620] [2019-12-07 12:03:17,592 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_17f5076f-47ee-42c3-b247-cd0edba3fb49/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:03:17,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:03:17,614 INFO L264 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 12:03:17,615 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:03:17,668 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 12:03:17,669 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:03:17,689 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 12:03:17,689 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1821038577] [2019-12-07 12:03:17,690 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2019-12-07 12:03:17,690 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 12:03:17,690 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 12:03:17,690 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 12:03:17,690 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 12:03:17,729 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 12:03:17,815 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 12:03:17,834 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 12:03:18,080 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 12:03:18,422 WARN L192 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 91 [2019-12-07 12:03:18,821 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 12:03:18,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 12:03:18,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 7 [2019-12-07 12:03:18,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080598888] [2019-12-07 12:03:18,822 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-07 12:03:18,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 12:03:18,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 12:03:18,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2019-12-07 12:03:18,823 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand 9 states. [2019-12-07 12:03:18,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:03:18,955 INFO L93 Difference]: Finished difference Result 61 states and 74 transitions. [2019-12-07 12:03:18,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 12:03:18,956 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 10 [2019-12-07 12:03:18,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:03:18,956 INFO L225 Difference]: With dead ends: 61 [2019-12-07 12:03:18,957 INFO L226 Difference]: Without dead ends: 61 [2019-12-07 12:03:18,957 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2019-12-07 12:03:18,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-12-07 12:03:18,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2019-12-07 12:03:18,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-12-07 12:03:18,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 73 transitions. [2019-12-07 12:03:18,960 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 73 transitions. Word has length 10 [2019-12-07 12:03:18,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:03:18,960 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 73 transitions. [2019-12-07 12:03:18,961 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-07 12:03:18,961 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 73 transitions. [2019-12-07 12:03:18,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-07 12:03:18,961 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:03:18,961 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:03:19,162 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:03:19,163 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 12:03:19,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:03:19,164 INFO L82 PathProgramCache]: Analyzing trace with hash 188329252, now seen corresponding path program 1 times [2019-12-07 12:03:19,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 12:03:19,164 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653758245] [2019-12-07 12:03:19,165 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:03:19,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:03:19,221 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 12:03:19,221 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653758245] [2019-12-07 12:03:19,222 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372386412] [2019-12-07 12:03:19,222 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_17f5076f-47ee-42c3-b247-cd0edba3fb49/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 [2019-12-07 12:03:19,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:03:19,247 INFO L264 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 12:03:19,248 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:03:19,253 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 12:03:19,253 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:03:19,276 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 12:03:19,276 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [562911707] [2019-12-07 12:03:19,277 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-12-07 12:03:19,277 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 12:03:19,277 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 12:03:19,277 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 12:03:19,277 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 12:03:19,325 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 12:03:19,412 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 12:03:19,439 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 12:03:19,698 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 12:03:19,920 WARN L192 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 91 [2019-12-07 12:03:20,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-12-07 12:03:20,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 4, 4] total 14 [2019-12-07 12:03:20,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81435386] [2019-12-07 12:03:20,286 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 12:03:20,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 12:03:20,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 12:03:20,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2019-12-07 12:03:20,287 INFO L87 Difference]: Start difference. First operand 54 states and 73 transitions. Second operand 8 states. [2019-12-07 12:03:20,570 WARN L192 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 91 [2019-12-07 12:03:20,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:03:20,712 INFO L93 Difference]: Finished difference Result 54 states and 72 transitions. [2019-12-07 12:03:20,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 12:03:20,712 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2019-12-07 12:03:20,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:03:20,713 INFO L225 Difference]: With dead ends: 54 [2019-12-07 12:03:20,713 INFO L226 Difference]: Without dead ends: 54 [2019-12-07 12:03:20,714 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2019-12-07 12:03:20,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-12-07 12:03:20,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2019-12-07 12:03:20,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-12-07 12:03:20,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2019-12-07 12:03:20,718 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 72 transitions. Word has length 13 [2019-12-07 12:03:20,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:03:20,719 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 72 transitions. [2019-12-07 12:03:20,719 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 12:03:20,719 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 72 transitions. [2019-12-07 12:03:20,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-07 12:03:20,719 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:03:20,720 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2019-12-07 12:03:20,920 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:03:20,921 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 12:03:20,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:03:20,922 INFO L82 PathProgramCache]: Analyzing trace with hash 188258073, now seen corresponding path program 2 times [2019-12-07 12:03:20,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 12:03:20,923 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076536201] [2019-12-07 12:03:20,923 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:03:20,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:03:20,977 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-12-07 12:03:20,977 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076536201] [2019-12-07 12:03:20,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:03:20,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 12:03:20,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071055900] [2019-12-07 12:03:20,978 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 12:03:20,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 12:03:20,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 12:03:20,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 12:03:20,979 INFO L87 Difference]: Start difference. First operand 54 states and 72 transitions. Second operand 3 states. [2019-12-07 12:03:20,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:03:20,988 INFO L93 Difference]: Finished difference Result 81 states and 110 transitions. [2019-12-07 12:03:20,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 12:03:20,989 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-12-07 12:03:20,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:03:20,989 INFO L225 Difference]: With dead ends: 81 [2019-12-07 12:03:20,989 INFO L226 Difference]: Without dead ends: 81 [2019-12-07 12:03:20,989 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 12:03:20,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2019-12-07 12:03:20,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 60. [2019-12-07 12:03:20,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2019-12-07 12:03:20,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 81 transitions. [2019-12-07 12:03:20,993 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 81 transitions. Word has length 13 [2019-12-07 12:03:20,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:03:20,993 INFO L462 AbstractCegarLoop]: Abstraction has 60 states and 81 transitions. [2019-12-07 12:03:20,993 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 12:03:20,993 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 81 transitions. [2019-12-07 12:03:20,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-07 12:03:20,994 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:03:20,994 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2019-12-07 12:03:20,994 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 12:03:20,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:03:20,995 INFO L82 PathProgramCache]: Analyzing trace with hash 521636203, now seen corresponding path program 3 times [2019-12-07 12:03:20,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 12:03:20,995 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828871744] [2019-12-07 12:03:20,995 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:03:21,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:03:21,033 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 12:03:21,034 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828871744] [2019-12-07 12:03:21,034 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134811132] [2019-12-07 12:03:21,034 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_17f5076f-47ee-42c3-b247-cd0edba3fb49/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:03:21,062 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 12:03:21,062 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 12:03:21,063 INFO L264 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 12:03:21,063 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:03:21,088 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-07 12:03:21,089 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:03:21,110 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-07 12:03:21,110 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [453310375] [2019-12-07 12:03:21,111 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2019-12-07 12:03:21,111 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 12:03:21,111 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 12:03:21,111 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 12:03:21,111 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 12:03:21,154 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 12:03:21,221 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 12:03:21,251 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 12:03:21,481 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 12:03:21,914 WARN L192 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 91 [2019-12-07 12:03:22,280 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 12:03:22,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 12:03:22,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 12 [2019-12-07 12:03:22,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996082926] [2019-12-07 12:03:22,281 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-12-07 12:03:22,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 12:03:22,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-12-07 12:03:22,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2019-12-07 12:03:22,281 INFO L87 Difference]: Start difference. First operand 60 states and 81 transitions. Second operand 12 states. [2019-12-07 12:03:22,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:03:22,480 INFO L93 Difference]: Finished difference Result 74 states and 92 transitions. [2019-12-07 12:03:22,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-12-07 12:03:22,480 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 13 [2019-12-07 12:03:22,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:03:22,481 INFO L225 Difference]: With dead ends: 74 [2019-12-07 12:03:22,481 INFO L226 Difference]: Without dead ends: 74 [2019-12-07 12:03:22,481 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=147, Invalid=665, Unknown=0, NotChecked=0, Total=812 [2019-12-07 12:03:22,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2019-12-07 12:03:22,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 45. [2019-12-07 12:03:22,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-12-07 12:03:22,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 59 transitions. [2019-12-07 12:03:22,484 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 59 transitions. Word has length 13 [2019-12-07 12:03:22,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:03:22,484 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 59 transitions. [2019-12-07 12:03:22,484 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-12-07 12:03:22,484 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 59 transitions. [2019-12-07 12:03:22,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 12:03:22,484 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:03:22,484 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1] [2019-12-07 12:03:22,685 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:03:22,686 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 12:03:22,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:03:22,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1541033020, now seen corresponding path program 1 times [2019-12-07 12:03:22,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 12:03:22,687 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388667655] [2019-12-07 12:03:22,687 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:03:22,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:03:22,737 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 12:03:22,737 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388667655] [2019-12-07 12:03:22,738 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590676858] [2019-12-07 12:03:22,738 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_17f5076f-47ee-42c3-b247-cd0edba3fb49/bin/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:03:22,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:03:22,765 INFO L264 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 15 conjunts are in the unsatisfiable core [2019-12-07 12:03:22,766 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:03:22,767 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 12:03:22,767 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:03:22,775 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 12:03:22,775 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1985462951] [2019-12-07 12:03:22,776 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2019-12-07 12:03:22,776 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 12:03:22,776 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 12:03:22,776 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 12:03:22,776 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 12:03:22,809 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 12:03:22,869 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 12:03:22,893 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 12:03:23,118 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 12:03:23,433 WARN L192 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 91 [2019-12-07 12:03:23,743 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 12:03:23,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 12:03:23,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2019-12-07 12:03:23,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102202261] [2019-12-07 12:03:23,744 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 12:03:23,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 12:03:23,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 12:03:23,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-12-07 12:03:23,744 INFO L87 Difference]: Start difference. First operand 45 states and 59 transitions. Second operand 5 states. [2019-12-07 12:03:23,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:03:23,770 INFO L93 Difference]: Finished difference Result 44 states and 56 transitions. [2019-12-07 12:03:23,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 12:03:23,771 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-12-07 12:03:23,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:03:23,771 INFO L225 Difference]: With dead ends: 44 [2019-12-07 12:03:23,771 INFO L226 Difference]: Without dead ends: 44 [2019-12-07 12:03:23,772 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-12-07 12:03:23,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-12-07 12:03:23,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2019-12-07 12:03:23,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-12-07 12:03:23,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 56 transitions. [2019-12-07 12:03:23,774 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 56 transitions. Word has length 14 [2019-12-07 12:03:23,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:03:23,775 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 56 transitions. [2019-12-07 12:03:23,775 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 12:03:23,775 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 56 transitions. [2019-12-07 12:03:23,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 12:03:23,775 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:03:23,775 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1] [2019-12-07 12:03:23,976 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:03:23,977 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 12:03:23,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:03:23,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1541033021, now seen corresponding path program 1 times [2019-12-07 12:03:23,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 12:03:23,978 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849953376] [2019-12-07 12:03:23,978 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:03:23,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:03:24,044 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-12-07 12:03:24,044 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849953376] [2019-12-07 12:03:24,044 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650087637] [2019-12-07 12:03:24,044 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_17f5076f-47ee-42c3-b247-cd0edba3fb49/bin/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:03:24,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:03:24,075 INFO L264 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 24 conjunts are in the unsatisfiable core [2019-12-07 12:03:24,076 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:03:24,107 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-12-07 12:03:24,108 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:03:24,133 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-12-07 12:03:24,133 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2122232836] [2019-12-07 12:03:24,134 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2019-12-07 12:03:24,134 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 12:03:24,134 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 12:03:24,134 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 12:03:24,134 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 12:03:24,168 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 12:03:24,241 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 12:03:24,262 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 12:03:24,481 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 12:03:24,839 WARN L192 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 91 [2019-12-07 12:03:25,061 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2019-12-07 12:03:25,292 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 12:03:25,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 12:03:25,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2019-12-07 12:03:25,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854327357] [2019-12-07 12:03:25,292 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-07 12:03:25,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 12:03:25,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 12:03:25,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2019-12-07 12:03:25,293 INFO L87 Difference]: Start difference. First operand 44 states and 56 transitions. Second operand 9 states. [2019-12-07 12:03:25,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:03:25,356 INFO L93 Difference]: Finished difference Result 43 states and 53 transitions. [2019-12-07 12:03:25,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 12:03:25,357 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2019-12-07 12:03:25,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:03:25,357 INFO L225 Difference]: With dead ends: 43 [2019-12-07 12:03:25,357 INFO L226 Difference]: Without dead ends: 43 [2019-12-07 12:03:25,357 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2019-12-07 12:03:25,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-12-07 12:03:25,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2019-12-07 12:03:25,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-12-07 12:03:25,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2019-12-07 12:03:25,360 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 14 [2019-12-07 12:03:25,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:03:25,360 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2019-12-07 12:03:25,360 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-07 12:03:25,360 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2019-12-07 12:03:25,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-07 12:03:25,361 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:03:25,361 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:03:25,561 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:03:25,562 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 12:03:25,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:03:25,563 INFO L82 PathProgramCache]: Analyzing trace with hash 595785087, now seen corresponding path program 1 times [2019-12-07 12:03:25,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 12:03:25,563 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946313444] [2019-12-07 12:03:25,564 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:03:25,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:03:25,584 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 12:03:25,584 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946313444] [2019-12-07 12:03:25,584 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884559953] [2019-12-07 12:03:25,584 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_17f5076f-47ee-42c3-b247-cd0edba3fb49/bin/utaipan/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:03:25,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:03:25,609 INFO L264 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 12:03:25,609 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:03:25,613 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 12:03:25,613 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:03:25,627 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 12:03:25,627 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1863115026] [2019-12-07 12:03:25,628 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2019-12-07 12:03:25,628 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 12:03:25,628 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 12:03:25,628 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 12:03:25,628 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 12:03:25,661 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 12:03:25,716 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 12:03:25,736 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 12:03:25,979 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 12:03:25,997 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 12:03:26,248 WARN L192 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 91 [2019-12-07 12:03:26,820 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 12:03:26,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 12:03:26,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2019-12-07 12:03:26,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169603365] [2019-12-07 12:03:26,821 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-07 12:03:26,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 12:03:26,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 12:03:26,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2019-12-07 12:03:26,822 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand 9 states. [2019-12-07 12:03:26,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:03:26,870 INFO L93 Difference]: Finished difference Result 83 states and 88 transitions. [2019-12-07 12:03:26,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 12:03:26,870 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2019-12-07 12:03:26,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:03:26,871 INFO L225 Difference]: With dead ends: 83 [2019-12-07 12:03:26,871 INFO L226 Difference]: Without dead ends: 83 [2019-12-07 12:03:26,871 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2019-12-07 12:03:26,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2019-12-07 12:03:26,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 63. [2019-12-07 12:03:26,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2019-12-07 12:03:26,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 82 transitions. [2019-12-07 12:03:26,874 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 82 transitions. Word has length 15 [2019-12-07 12:03:26,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:03:26,874 INFO L462 AbstractCegarLoop]: Abstraction has 63 states and 82 transitions. [2019-12-07 12:03:26,874 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-07 12:03:26,874 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 82 transitions. [2019-12-07 12:03:26,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-07 12:03:26,874 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:03:26,874 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1] [2019-12-07 12:03:27,075 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:03:27,076 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 12:03:27,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:03:27,076 INFO L82 PathProgramCache]: Analyzing trace with hash -830929546, now seen corresponding path program 4 times [2019-12-07 12:03:27,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 12:03:27,077 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325742538] [2019-12-07 12:03:27,077 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:03:27,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:03:27,123 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-12-07 12:03:27,123 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325742538] [2019-12-07 12:03:27,123 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888002687] [2019-12-07 12:03:27,123 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_17f5076f-47ee-42c3-b247-cd0edba3fb49/bin/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:03:27,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:03:27,150 INFO L264 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 12:03:27,151 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:03:27,167 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-12-07 12:03:27,167 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:03:27,180 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-12-07 12:03:27,181 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [422557326] [2019-12-07 12:03:27,181 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2019-12-07 12:03:27,181 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 12:03:27,181 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 12:03:27,182 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 12:03:27,182 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 12:03:27,213 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 12:03:27,268 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 12:03:27,298 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 12:03:27,513 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 12:03:27,628 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2019-12-07 12:03:27,891 WARN L192 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 91 [2019-12-07 12:03:28,219 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 12:03:28,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 12:03:28,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2019-12-07 12:03:28,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251738818] [2019-12-07 12:03:28,219 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-07 12:03:28,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 12:03:28,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 12:03:28,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-12-07 12:03:28,220 INFO L87 Difference]: Start difference. First operand 63 states and 82 transitions. Second operand 10 states. [2019-12-07 12:03:28,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:03:28,278 INFO L93 Difference]: Finished difference Result 144 states and 192 transitions. [2019-12-07 12:03:28,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 12:03:28,278 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2019-12-07 12:03:28,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:03:28,279 INFO L225 Difference]: With dead ends: 144 [2019-12-07 12:03:28,279 INFO L226 Difference]: Without dead ends: 144 [2019-12-07 12:03:28,279 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2019-12-07 12:03:28,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2019-12-07 12:03:28,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 58. [2019-12-07 12:03:28,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-12-07 12:03:28,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 74 transitions. [2019-12-07 12:03:28,282 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 74 transitions. Word has length 16 [2019-12-07 12:03:28,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:03:28,282 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 74 transitions. [2019-12-07 12:03:28,282 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-07 12:03:28,282 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 74 transitions. [2019-12-07 12:03:28,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-12-07 12:03:28,283 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:03:28,283 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1] [2019-12-07 12:03:28,483 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:03:28,484 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 12:03:28,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:03:28,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1432583701, now seen corresponding path program 2 times [2019-12-07 12:03:28,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 12:03:28,485 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400052452] [2019-12-07 12:03:28,485 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:03:28,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:03:28,559 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 47 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-12-07 12:03:28,559 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400052452] [2019-12-07 12:03:28,559 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611695456] [2019-12-07 12:03:28,559 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_17f5076f-47ee-42c3-b247-cd0edba3fb49/bin/utaipan/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:03:28,585 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-12-07 12:03:28,585 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 12:03:28,586 INFO L264 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 12:03:28,587 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:03:28,651 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-12-07 12:03:28,651 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:03:28,699 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-12-07 12:03:28,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-12-07 12:03:28,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8, 3] total 14 [2019-12-07 12:03:28,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428257172] [2019-12-07 12:03:28,699 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 12:03:28,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 12:03:28,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 12:03:28,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2019-12-07 12:03:28,700 INFO L87 Difference]: Start difference. First operand 58 states and 74 transitions. Second operand 5 states. [2019-12-07 12:03:28,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:03:28,725 INFO L93 Difference]: Finished difference Result 57 states and 72 transitions. [2019-12-07 12:03:28,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 12:03:28,725 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2019-12-07 12:03:28,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:03:28,726 INFO L225 Difference]: With dead ends: 57 [2019-12-07 12:03:28,726 INFO L226 Difference]: Without dead ends: 57 [2019-12-07 12:03:28,726 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2019-12-07 12:03:28,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-12-07 12:03:28,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2019-12-07 12:03:28,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-12-07 12:03:28,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 72 transitions. [2019-12-07 12:03:28,728 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 72 transitions. Word has length 28 [2019-12-07 12:03:28,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:03:28,728 INFO L462 AbstractCegarLoop]: Abstraction has 57 states and 72 transitions. [2019-12-07 12:03:28,728 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 12:03:28,728 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 72 transitions. [2019-12-07 12:03:28,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-12-07 12:03:28,729 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:03:28,729 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2019-12-07 12:03:28,929 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:03:28,930 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 12:03:28,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:03:28,930 INFO L82 PathProgramCache]: Analyzing trace with hash 2054873883, now seen corresponding path program 2 times [2019-12-07 12:03:28,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 12:03:28,930 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716397773] [2019-12-07 12:03:28,930 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:03:28,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:03:28,984 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-12-07 12:03:28,984 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716397773] [2019-12-07 12:03:28,984 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408807826] [2019-12-07 12:03:28,984 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_17f5076f-47ee-42c3-b247-cd0edba3fb49/bin/utaipan/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:03:29,008 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-12-07 12:03:29,008 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 12:03:29,009 INFO L264 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 12:03:29,010 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:03:29,152 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2019-12-07 12:03:29,152 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:03:29,172 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2019-12-07 12:03:29,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-12-07 12:03:29,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [8] total 12 [2019-12-07 12:03:29,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948989900] [2019-12-07 12:03:29,173 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 12:03:29,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 12:03:29,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 12:03:29,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2019-12-07 12:03:29,173 INFO L87 Difference]: Start difference. First operand 57 states and 72 transitions. Second operand 6 states. [2019-12-07 12:03:29,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:03:29,233 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2019-12-07 12:03:29,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 12:03:29,234 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2019-12-07 12:03:29,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:03:29,234 INFO L225 Difference]: With dead ends: 56 [2019-12-07 12:03:29,234 INFO L226 Difference]: Without dead ends: 55 [2019-12-07 12:03:29,234 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2019-12-07 12:03:29,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-12-07 12:03:29,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 41. [2019-12-07 12:03:29,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-12-07 12:03:29,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2019-12-07 12:03:29,236 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 39 [2019-12-07 12:03:29,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:03:29,236 INFO L462 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2019-12-07 12:03:29,236 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 12:03:29,236 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2019-12-07 12:03:29,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-12-07 12:03:29,237 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:03:29,237 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 2, 1, 1, 1, 1, 1] [2019-12-07 12:03:29,437 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:03:29,438 INFO L410 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 12:03:29,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:03:29,438 INFO L82 PathProgramCache]: Analyzing trace with hash -723416689, now seen corresponding path program 1 times [2019-12-07 12:03:29,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 12:03:29,438 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158979080] [2019-12-07 12:03:29,438 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:03:29,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:03:29,483 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2019-12-07 12:03:29,483 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158979080] [2019-12-07 12:03:29,484 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074171368] [2019-12-07 12:03:29,484 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_17f5076f-47ee-42c3-b247-cd0edba3fb49/bin/utaipan/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:03:29,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:03:29,525 INFO L264 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 12:03:29,526 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:03:29,560 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 68 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-12-07 12:03:29,560 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:03:29,594 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 68 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-12-07 12:03:29,594 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [361637485] [2019-12-07 12:03:29,595 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2019-12-07 12:03:29,595 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 12:03:29,595 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 12:03:29,595 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 12:03:29,595 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 12:03:29,627 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 12:03:29,704 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 12:03:29,720 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 12:03:30,015 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 12:03:30,281 WARN L192 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 91 [2019-12-07 12:03:30,921 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 12:03:30,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 12:03:30,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2019-12-07 12:03:30,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100497420] [2019-12-07 12:03:30,923 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-12-07 12:03:30,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 12:03:30,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-12-07 12:03:30,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2019-12-07 12:03:30,924 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 14 states. [2019-12-07 12:03:31,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:03:31,498 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions. [2019-12-07 12:03:31,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-12-07 12:03:31,498 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 40 [2019-12-07 12:03:31,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:03:31,498 INFO L225 Difference]: With dead ends: 64 [2019-12-07 12:03:31,498 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 12:03:31,499 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 104 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=222, Invalid=900, Unknown=0, NotChecked=0, Total=1122 [2019-12-07 12:03:31,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 12:03:31,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 12:03:31,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 12:03:31,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 12:03:31,499 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2019-12-07 12:03:31,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:03:31,499 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 12:03:31,499 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-12-07 12:03:31,499 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 12:03:31,500 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 12:03:31,700 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:03:31,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 12:03:31 BoogieIcfgContainer [2019-12-07 12:03:31,708 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 12:03:31,708 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 12:03:31,708 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 12:03:31,708 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 12:03:31,708 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:03:13" (3/4) ... [2019-12-07 12:03:31,711 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 12:03:31,718 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2019-12-07 12:03:31,718 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2019-12-07 12:03:31,719 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-12-07 12:03:31,744 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_17f5076f-47ee-42c3-b247-cd0edba3fb49/bin/utaipan/witness.graphml [2019-12-07 12:03:31,744 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 12:03:31,745 INFO L168 Benchmark]: Toolchain (without parser) took 18565.25 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 351.8 MB). Free memory was 935.4 MB in the beginning and 979.0 MB in the end (delta: -43.6 MB). Peak memory consumption was 308.2 MB. Max. memory is 11.5 GB. [2019-12-07 12:03:31,746 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 954.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:03:31,746 INFO L168 Benchmark]: CACSL2BoogieTranslator took 179.28 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.0 MB). Free memory was 935.4 MB in the beginning and 1.1 GB in the end (delta: -169.0 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-12-07 12:03:31,746 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.80 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-12-07 12:03:31,746 INFO L168 Benchmark]: Boogie Preprocessor took 15.57 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-12-07 12:03:31,746 INFO L168 Benchmark]: RCFGBuilder took 252.13 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 11.5 GB. [2019-12-07 12:03:31,747 INFO L168 Benchmark]: TraceAbstraction took 18055.07 ms. Allocated memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: 244.8 MB). Free memory was 1.1 GB in the beginning and 982.5 MB in the end (delta: 89.9 MB). Peak memory consumption was 334.8 MB. Max. memory is 11.5 GB. [2019-12-07 12:03:31,747 INFO L168 Benchmark]: Witness Printer took 36.62 ms. Allocated memory is still 1.4 GB. Free memory was 982.5 MB in the beginning and 979.0 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. [2019-12-07 12:03:31,748 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 954.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 179.28 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.0 MB). Free memory was 935.4 MB in the beginning and 1.1 GB in the end (delta: -169.0 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 23.80 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.57 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 252.13 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 18055.07 ms. Allocated memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: 244.8 MB). Free memory was 1.1 GB in the beginning and 982.5 MB in the end (delta: 89.9 MB). Peak memory consumption was 334.8 MB. Max. memory is 11.5 GB. * Witness Printer took 36.62 ms. Allocated memory is still 1.4 GB. Free memory was 982.5 MB in the beginning and 979.0 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 30]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 30]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 16]: array index is always in bounds For all program executions holds that array index is always in bounds at this location - PositiveResult [Line: 27]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 27]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 8 error locations. Result: SAFE, OverallTime: 18.0s, OverallIterations: 17, TraceHistogramMax: 6, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 178 SDtfs, 916 SDslu, 233 SDs, 0 SdLazy, 815 SolverSat, 205 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 694 GetRequests, 471 SyntacticMatches, 13 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 952 ImplicationChecksByTransitivity, 9.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 17 MinimizatonAttempts, 248 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 467 NumberOfCodeBlocks, 416 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 645 ConstructedInterpolants, 37 QuantifiedInterpolants, 123762 SizeOfPredicates, 33 NumberOfNonLiveVariables, 1383 ConjunctsInSsa, 104 ConjunctsInUnsatCore, 41 InterpolantComputations, 8 PerfectInterpolantSequences, 859/1121 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: OVERALL_TIME[ms]: 854, ICFG_INTERPRETER_ENTERED_PROCEDURES: 2, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 18, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 44, TOOLS_POST_TIME[ms]: 349, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 44, TOOLS_QUANTIFIERELIM_TIME[ms]: 338, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 63, FLUID_QUERY_TIME[ms]: 4, FLUID_QUERIES: 77, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 8, DOMAIN_JOIN_TIME[ms]: 283, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 4, DOMAIN_WIDEN_TIME[ms]: 144, DOMAIN_ISSUBSETEQ_APPLICATIONS: 6, DOMAIN_ISSUBSETEQ_TIME[ms]: 14, DOMAIN_ISBOTTOM_APPLICATIONS: 18, DOMAIN_ISBOTTOM_TIME[ms]: 25, LOOP_SUMMARIZER_APPLICATIONS: 2, LOOP_SUMMARIZER_CACHE_MISSES: 2, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 490, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 489, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 6, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 1, PATH_EXPR_TIME[ms]: 2, REGEX_TO_DAG_TIME[ms]: 2, DAG_COMPRESSION_TIME[ms]: 9, DAG_COMPRESSION_PROCESSED_NODES: 139, DAG_COMPRESSION_RETAINED_NODES: 54, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...