./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-recursive-malloc/insertionSort_recursive.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-recursive-malloc/insertionSort_recursive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur --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 64bit --witnessprinter.graph.data.programhash 1ae4a3f744c0a8577333c2c3dfb4ecaabbd2cf6e1675b06577194a98b8d1aee1 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 23:47:05,602 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:47:05,605 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:47:05,635 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:47:05,636 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:47:05,637 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:47:05,638 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:47:05,640 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:47:05,642 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:47:05,643 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:47:05,645 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:47:05,646 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:47:05,646 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:47:05,648 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:47:05,649 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:47:05,650 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:47:05,651 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:47:05,652 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:47:05,655 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:47:05,657 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:47:05,659 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:47:05,664 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:47:05,670 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:47:05,671 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:47:05,675 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:47:05,680 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:47:05,681 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:47:05,682 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:47:05,682 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:47:05,683 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:47:05,686 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:47:05,687 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:47:05,688 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:47:05,689 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:47:05,691 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:47:05,692 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:47:05,693 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:47:05,693 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:47:05,693 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:47:05,695 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:47:05,695 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:47:05,696 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2022-11-25 23:47:05,737 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:47:05,737 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:47:05,738 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:47:05,738 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:47:05,739 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:47:05,739 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:47:05,739 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:47:05,740 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:47:05,740 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:47:05,740 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:47:05,741 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:47:05,741 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:47:05,742 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:47:05,742 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:47:05,742 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:47:05,742 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:47:05,743 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:47:05,743 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:47:05,743 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 23:47:05,744 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 23:47:05,744 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:47:05,744 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 23:47:05,744 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:47:05,745 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:47:05,745 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 23:47:05,745 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 23:47:05,745 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 23:47:05,745 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:47:05,746 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 23:47:05,746 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:47:05,746 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:47:05,747 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:47:05,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:47:05,747 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:47:05,747 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:47:05,747 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:47:05,748 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:47:05,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:47:05,748 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:47:05,748 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ae4a3f744c0a8577333c2c3dfb4ecaabbd2cf6e1675b06577194a98b8d1aee1 [2022-11-25 23:47:06,025 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:47:06,069 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:47:06,072 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:47:06,073 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:47:06,074 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:47:06,075 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/termination-recursive-malloc/insertionSort_recursive.i [2022-11-25 23:47:09,193 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:47:09,395 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:47:09,396 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/sv-benchmarks/c/termination-recursive-malloc/insertionSort_recursive.i [2022-11-25 23:47:09,402 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur/data/5222036e4/e86ba726f4284a57aa87b967aa9ad461/FLAGb5675e8a8 [2022-11-25 23:47:09,418 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur/data/5222036e4/e86ba726f4284a57aa87b967aa9ad461 [2022-11-25 23:47:09,421 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:47:09,423 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:47:09,424 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:47:09,424 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:47:09,428 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:47:09,429 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:47:09" (1/1) ... [2022-11-25 23:47:09,430 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59e1fff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:47:09, skipping insertion in model container [2022-11-25 23:47:09,431 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:47:09" (1/1) ... [2022-11-25 23:47:09,442 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:47:09,456 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:47:09,614 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:47:09,622 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:47:09,636 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:47:09,647 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:47:09,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:47:09 WrapperNode [2022-11-25 23:47:09,648 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:47:09,649 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:47:09,649 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:47:09,649 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:47:09,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:47:09" (1/1) ... [2022-11-25 23:47:09,660 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:47:09" (1/1) ... [2022-11-25 23:47:09,678 INFO L138 Inliner]: procedures = 11, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 30 [2022-11-25 23:47:09,678 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:47:09,679 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:47:09,679 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:47:09,679 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:47:09,688 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:47:09" (1/1) ... [2022-11-25 23:47:09,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:47:09" (1/1) ... [2022-11-25 23:47:09,691 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:47:09" (1/1) ... [2022-11-25 23:47:09,691 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:47:09" (1/1) ... [2022-11-25 23:47:09,697 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:47:09" (1/1) ... [2022-11-25 23:47:09,701 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:47:09" (1/1) ... [2022-11-25 23:47:09,702 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:47:09" (1/1) ... [2022-11-25 23:47:09,703 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:47:09" (1/1) ... [2022-11-25 23:47:09,705 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:47:09,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:47:09,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:47:09,706 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:47:09,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:47:09" (1/1) ... [2022-11-25 23:47:09,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:47:09,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:47:09,739 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:47:09,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:47:09,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 23:47:09,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 23:47:09,789 INFO L130 BoogieDeclarations]: Found specification of procedure insertionSort [2022-11-25 23:47:09,789 INFO L138 BoogieDeclarations]: Found implementation of procedure insertionSort [2022-11-25 23:47:09,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:47:09,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:47:09,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 23:47:09,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 23:47:09,860 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:47:09,862 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:47:10,228 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:47:10,358 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:47:10,359 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-25 23:47:10,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:47:10 BoogieIcfgContainer [2022-11-25 23:47:10,362 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:47:10,365 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:47:10,365 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:47:10,369 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:47:10,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:47:09" (1/3) ... [2022-11-25 23:47:10,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aeda81e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:47:10, skipping insertion in model container [2022-11-25 23:47:10,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:47:09" (2/3) ... [2022-11-25 23:47:10,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aeda81e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:47:10, skipping insertion in model container [2022-11-25 23:47:10,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:47:10" (3/3) ... [2022-11-25 23:47:10,373 INFO L112 eAbstractionObserver]: Analyzing ICFG insertionSort_recursive.i [2022-11-25 23:47:10,396 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:47:10,396 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-25 23:47:10,468 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:47:10,476 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@aa4f2d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:47:10,476 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2022-11-25 23:47:10,483 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 20 states have (on average 2.1) internal successors, (42), 36 states have internal predecessors, (42), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 23:47:10,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-25 23:47:10,491 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:47:10,491 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-25 23:47:10,493 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [insertionSortErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-25 23:47:10,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:47:10,503 INFO L85 PathProgramCache]: Analyzing trace with hash 121881, now seen corresponding path program 1 times [2022-11-25 23:47:10,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:47:10,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909938775] [2022-11-25 23:47:10,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:47:10,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:47:10,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:47:10,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:47:10,731 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:47:10,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909938775] [2022-11-25 23:47:10,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909938775] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:47:10,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:47:10,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 23:47:10,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767575323] [2022-11-25 23:47:10,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:47:10,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:47:10,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:47:10,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:47:10,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:47:10,796 INFO L87 Difference]: Start difference. First operand has 40 states, 20 states have (on average 2.1) internal successors, (42), 36 states have internal predecessors, (42), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:10,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:47:10,908 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2022-11-25 23:47:10,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:47:10,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-25 23:47:10,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:47:10,919 INFO L225 Difference]: With dead ends: 41 [2022-11-25 23:47:10,919 INFO L226 Difference]: Without dead ends: 39 [2022-11-25 23:47:10,921 INFO L412 NwaCegarLoop]: 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 [2022-11-25 23:47:10,940 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 1 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:47:10,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 61 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:47:10,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-25 23:47:10,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-11-25 23:47:10,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 20 states have (on average 1.95) internal successors, (39), 35 states have internal predecessors, (39), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 23:47:10,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2022-11-25 23:47:10,977 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 3 [2022-11-25 23:47:10,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:47:10,978 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2022-11-25 23:47:10,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:10,979 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2022-11-25 23:47:10,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-25 23:47:10,979 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:47:10,979 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-25 23:47:10,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 23:47:10,980 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insertionSortErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-25 23:47:10,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:47:10,981 INFO L85 PathProgramCache]: Analyzing trace with hash 3779741, now seen corresponding path program 1 times [2022-11-25 23:47:10,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:47:10,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402318902] [2022-11-25 23:47:10,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:47:10,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:47:11,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:47:11,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:47:11,064 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:47:11,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402318902] [2022-11-25 23:47:11,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402318902] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:47:11,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:47:11,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 23:47:11,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134400023] [2022-11-25 23:47:11,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:47:11,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:47:11,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:47:11,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:47:11,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:47:11,069 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:11,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:47:11,138 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2022-11-25 23:47:11,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:47:11,139 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-25 23:47:11,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:47:11,142 INFO L225 Difference]: With dead ends: 37 [2022-11-25 23:47:11,143 INFO L226 Difference]: Without dead ends: 37 [2022-11-25 23:47:11,144 INFO L412 NwaCegarLoop]: 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 [2022-11-25 23:47:11,145 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 7 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:47:11,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 47 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:47:11,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-25 23:47:11,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-11-25 23:47:11,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 20 states have (on average 1.85) internal successors, (37), 33 states have internal predecessors, (37), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 23:47:11,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2022-11-25 23:47:11,158 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 4 [2022-11-25 23:47:11,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:47:11,160 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2022-11-25 23:47:11,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:11,160 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2022-11-25 23:47:11,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-25 23:47:11,162 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:47:11,162 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-25 23:47:11,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 23:47:11,164 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insertionSortErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-25 23:47:11,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:47:11,170 INFO L85 PathProgramCache]: Analyzing trace with hash 3779742, now seen corresponding path program 1 times [2022-11-25 23:47:11,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:47:11,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350447672] [2022-11-25 23:47:11,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:47:11,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:47:11,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:47:11,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:47:11,418 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:47:11,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350447672] [2022-11-25 23:47:11,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350447672] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:47:11,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:47:11,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:47:11,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992362064] [2022-11-25 23:47:11,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:47:11,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:47:11,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:47:11,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:47:11,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:47:11,422 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:11,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:47:11,513 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2022-11-25 23:47:11,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:47:11,514 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-25 23:47:11,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:47:11,515 INFO L225 Difference]: With dead ends: 46 [2022-11-25 23:47:11,516 INFO L226 Difference]: Without dead ends: 46 [2022-11-25 23:47:11,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:47:11,517 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 25 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:47:11,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 72 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:47:11,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-25 23:47:11,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2022-11-25 23:47:11,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 36 states have internal predecessors, (41), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 23:47:11,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2022-11-25 23:47:11,525 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 4 [2022-11-25 23:47:11,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:47:11,526 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2022-11-25 23:47:11,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:11,526 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2022-11-25 23:47:11,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-25 23:47:11,527 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:47:11,527 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-25 23:47:11,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 23:47:11,528 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insertionSortErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-25 23:47:11,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:47:11,529 INFO L85 PathProgramCache]: Analyzing trace with hash -662608197, now seen corresponding path program 1 times [2022-11-25 23:47:11,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:47:11,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601787799] [2022-11-25 23:47:11,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:47:11,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:47:11,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:47:11,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:47:11,834 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:47:11,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601787799] [2022-11-25 23:47:11,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601787799] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:47:11,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225982466] [2022-11-25 23:47:11,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:47:11,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:47:11,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:47:11,839 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:47:11,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 23:47:11,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:47:11,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 23:47:11,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:47:12,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2022-11-25 23:47:12,315 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:47:12,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:47:12,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:47:12,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225982466] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:47:12,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1804055867] [2022-11-25 23:47:12,627 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2022-11-25 23:47:12,627 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:47:12,632 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:47:12,638 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:47:12,639 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:47:12,686 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2022-11-25 23:47:12,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-25 23:47:12,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 147 treesize of output 137 [2022-11-25 23:47:12,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-25 23:47:12,988 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:47:13,278 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '339#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= |#NULL.offset| 0) (< |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|) (<= |ULTIMATE.start_main_#t~nondet10#1| 2147483647) (<= 0 |ULTIMATE.start_main_~i~0#1|) (not (<= (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4) 4) (select |#length| |ULTIMATE.start_main_~a~0#1.base|))) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet10#1|)) (= |#NULL.base| 0))' at error location [2022-11-25 23:47:13,278 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:47:13,279 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:47:13,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2022-11-25 23:47:13,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632395133] [2022-11-25 23:47:13,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:47:13,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-25 23:47:13,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:47:13,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 23:47:13,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2022-11-25 23:47:13,281 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:13,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:47:13,547 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2022-11-25 23:47:13,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 23:47:13,547 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-25 23:47:13,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:47:13,548 INFO L225 Difference]: With dead ends: 44 [2022-11-25 23:47:13,548 INFO L226 Difference]: Without dead ends: 44 [2022-11-25 23:47:13,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2022-11-25 23:47:13,550 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 38 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:47:13,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 143 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:47:13,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-25 23:47:13,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 35. [2022-11-25 23:47:13,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 20 states have (on average 1.75) internal successors, (35), 31 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 23:47:13,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2022-11-25 23:47:13,556 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 6 [2022-11-25 23:47:13,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:47:13,557 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2022-11-25 23:47:13,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:13,557 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2022-11-25 23:47:13,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-25 23:47:13,558 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:47:13,558 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:47:13,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 23:47:13,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:47:13,759 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting insertionSortErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insertionSortErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-25 23:47:13,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:47:13,759 INFO L85 PathProgramCache]: Analyzing trace with hash 965139858, now seen corresponding path program 1 times [2022-11-25 23:47:13,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:47:13,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368402577] [2022-11-25 23:47:13,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:47:13,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:47:13,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:47:13,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:47:13,836 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:47:13,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368402577] [2022-11-25 23:47:13,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368402577] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:47:13,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:47:13,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:47:13,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744985586] [2022-11-25 23:47:13,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:47:13,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:47:13,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:47:13,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:47:13,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:47:13,839 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:13,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:47:13,860 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2022-11-25 23:47:13,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:47:13,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-25 23:47:13,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:47:13,864 INFO L225 Difference]: With dead ends: 37 [2022-11-25 23:47:13,865 INFO L226 Difference]: Without dead ends: 37 [2022-11-25 23:47:13,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:47:13,867 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 1 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:47:13,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 60 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:47:13,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-25 23:47:13,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2022-11-25 23:47:13,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 32 states have internal predecessors, (36), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 23:47:13,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2022-11-25 23:47:13,879 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 7 [2022-11-25 23:47:13,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:47:13,879 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2022-11-25 23:47:13,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:13,880 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2022-11-25 23:47:13,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-25 23:47:13,881 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:47:13,881 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:47:13,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 23:47:13,882 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting insertionSortErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insertionSortErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-25 23:47:13,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:47:13,887 INFO L85 PathProgramCache]: Analyzing trace with hash -59108779, now seen corresponding path program 1 times [2022-11-25 23:47:13,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:47:13,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045142721] [2022-11-25 23:47:13,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:47:13,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:47:13,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:47:13,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:47:13,955 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:47:13,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045142721] [2022-11-25 23:47:13,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045142721] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:47:13,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:47:13,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:47:13,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957516508] [2022-11-25 23:47:13,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:47:13,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:47:13,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:47:13,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:47:13,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:47:13,958 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:14,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:47:14,020 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2022-11-25 23:47:14,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:47:14,021 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-25 23:47:14,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:47:14,022 INFO L225 Difference]: With dead ends: 31 [2022-11-25 23:47:14,022 INFO L226 Difference]: Without dead ends: 31 [2022-11-25 23:47:14,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 23:47:14,023 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 42 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:47:14,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 28 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:47:14,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-25 23:47:14,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-11-25 23:47:14,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 27 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 23:47:14,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2022-11-25 23:47:14,027 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 9 [2022-11-25 23:47:14,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:47:14,027 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2022-11-25 23:47:14,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:14,028 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2022-11-25 23:47:14,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-25 23:47:14,028 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:47:14,028 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:47:14,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 23:47:14,029 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting insertionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insertionSortErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-25 23:47:14,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:47:14,029 INFO L85 PathProgramCache]: Analyzing trace with hash -59108778, now seen corresponding path program 1 times [2022-11-25 23:47:14,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:47:14,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933946890] [2022-11-25 23:47:14,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:47:14,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:47:14,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:47:14,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:47:14,288 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:47:14,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933946890] [2022-11-25 23:47:14,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933946890] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:47:14,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364746803] [2022-11-25 23:47:14,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:47:14,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:47:14,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:47:14,291 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:47:14,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 23:47:14,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:47:14,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 23:47:14,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:47:14,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-25 23:47:14,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:47:14,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:47:14,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:47:14,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364746803] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-25 23:47:14,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 23:47:14,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 12 [2022-11-25 23:47:14,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528026774] [2022-11-25 23:47:14,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:47:14,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 23:47:14,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:47:14,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 23:47:14,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-11-25 23:47:14,566 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:14,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:47:14,696 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2022-11-25 23:47:14,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 23:47:14,697 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-25 23:47:14,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:47:14,699 INFO L225 Difference]: With dead ends: 52 [2022-11-25 23:47:14,699 INFO L226 Difference]: Without dead ends: 52 [2022-11-25 23:47:14,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-11-25 23:47:14,700 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 58 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:47:14,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 41 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:47:14,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-25 23:47:14,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 45. [2022-11-25 23:47:14,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 39 states have internal predecessors, (50), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 23:47:14,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2022-11-25 23:47:14,706 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 9 [2022-11-25 23:47:14,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:47:14,707 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2022-11-25 23:47:14,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:14,707 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2022-11-25 23:47:14,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-25 23:47:14,708 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:47:14,708 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:47:14,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 23:47:14,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-25 23:47:14,914 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting insertionSortErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insertionSortErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-25 23:47:14,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:47:14,915 INFO L85 PathProgramCache]: Analyzing trace with hash 29529219, now seen corresponding path program 1 times [2022-11-25 23:47:14,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:47:14,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947344479] [2022-11-25 23:47:14,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:47:14,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:47:14,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:47:14,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 23:47:14,976 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:47:14,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947344479] [2022-11-25 23:47:14,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947344479] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:47:14,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:47:14,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 23:47:14,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805747992] [2022-11-25 23:47:14,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:47:14,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 23:47:14,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:47:14,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 23:47:14,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 23:47:14,978 INFO L87 Difference]: Start difference. First operand 45 states and 56 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:15,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:47:15,084 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2022-11-25 23:47:15,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 23:47:15,086 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-25 23:47:15,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:47:15,087 INFO L225 Difference]: With dead ends: 46 [2022-11-25 23:47:15,087 INFO L226 Difference]: Without dead ends: 46 [2022-11-25 23:47:15,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-25 23:47:15,088 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 27 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:47:15,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 98 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:47:15,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-25 23:47:15,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2022-11-25 23:47:15,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 31 states have (on average 1.3870967741935485) internal successors, (43), 37 states have internal predecessors, (43), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 23:47:15,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2022-11-25 23:47:15,092 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 12 [2022-11-25 23:47:15,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:47:15,093 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2022-11-25 23:47:15,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:15,093 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2022-11-25 23:47:15,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-25 23:47:15,093 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:47:15,094 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:47:15,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 23:47:15,094 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE === [insertionSortErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-25 23:47:15,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:47:15,095 INFO L85 PathProgramCache]: Analyzing trace with hash 68035588, now seen corresponding path program 1 times [2022-11-25 23:47:15,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:47:15,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467633026] [2022-11-25 23:47:15,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:47:15,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:47:15,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:47:15,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 23:47:15,122 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:47:15,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467633026] [2022-11-25 23:47:15,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467633026] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:47:15,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:47:15,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 23:47:15,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415331975] [2022-11-25 23:47:15,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:47:15,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:47:15,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:47:15,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:47:15,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:47:15,125 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 23:47:15,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:47:15,144 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2022-11-25 23:47:15,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:47:15,146 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-11-25 23:47:15,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:47:15,146 INFO L225 Difference]: With dead ends: 42 [2022-11-25 23:47:15,147 INFO L226 Difference]: Without dead ends: 42 [2022-11-25 23:47:15,147 INFO L412 NwaCegarLoop]: 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 [2022-11-25 23:47:15,148 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 3 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:47:15,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 42 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:47:15,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-25 23:47:15,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-11-25 23:47:15,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 36 states have internal predecessors, (42), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 23:47:15,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2022-11-25 23:47:15,152 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 12 [2022-11-25 23:47:15,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:47:15,153 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2022-11-25 23:47:15,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 23:47:15,153 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2022-11-25 23:47:15,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-25 23:47:15,154 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:47:15,154 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:47:15,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 23:47:15,154 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting insertionSortErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insertionSortErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-25 23:47:15,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:47:15,155 INFO L85 PathProgramCache]: Analyzing trace with hash 915411813, now seen corresponding path program 1 times [2022-11-25 23:47:15,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:47:15,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209521510] [2022-11-25 23:47:15,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:47:15,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:47:15,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:47:15,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:47:15,363 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:47:15,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209521510] [2022-11-25 23:47:15,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209521510] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:47:15,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590360473] [2022-11-25 23:47:15,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:47:15,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:47:15,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:47:15,365 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:47:15,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 23:47:15,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:47:15,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 23:47:15,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:47:15,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 23:47:15,531 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:47:15,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590360473] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:47:15,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 23:47:15,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2022-11-25 23:47:15,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408082927] [2022-11-25 23:47:15,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:47:15,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 23:47:15,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:47:15,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 23:47:15,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-25 23:47:15,534 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:15,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:47:15,644 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2022-11-25 23:47:15,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 23:47:15,645 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-25 23:47:15,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:47:15,646 INFO L225 Difference]: With dead ends: 44 [2022-11-25 23:47:15,646 INFO L226 Difference]: Without dead ends: 44 [2022-11-25 23:47:15,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-11-25 23:47:15,647 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 24 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:47:15,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 82 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:47:15,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-25 23:47:15,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2022-11-25 23:47:15,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 36 states have internal predecessors, (41), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 23:47:15,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2022-11-25 23:47:15,652 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 13 [2022-11-25 23:47:15,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:47:15,652 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2022-11-25 23:47:15,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:15,653 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2022-11-25 23:47:15,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-25 23:47:15,653 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:47:15,653 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:47:15,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 23:47:15,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:47:15,859 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [insertionSortErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-25 23:47:15,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:47:15,859 INFO L85 PathProgramCache]: Analyzing trace with hash 957694151, now seen corresponding path program 1 times [2022-11-25 23:47:15,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:47:15,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686864919] [2022-11-25 23:47:15,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:47:15,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:47:15,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:47:15,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 23:47:15,945 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:47:15,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686864919] [2022-11-25 23:47:15,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686864919] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:47:15,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:47:15,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 23:47:15,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905959055] [2022-11-25 23:47:15,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:47:15,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:47:15,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:47:15,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:47:15,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:47:15,947 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 23:47:16,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:47:16,001 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2022-11-25 23:47:16,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:47:16,002 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-11-25 23:47:16,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:47:16,002 INFO L225 Difference]: With dead ends: 46 [2022-11-25 23:47:16,003 INFO L226 Difference]: Without dead ends: 44 [2022-11-25 23:47:16,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 23:47:16,004 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 21 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:47:16,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 61 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:47:16,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-25 23:47:16,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2022-11-25 23:47:16,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 36 states have internal predecessors, (40), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 23:47:16,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2022-11-25 23:47:16,012 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 14 [2022-11-25 23:47:16,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:47:16,012 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2022-11-25 23:47:16,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 23:47:16,014 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2022-11-25 23:47:16,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-25 23:47:16,014 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:47:16,014 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:47:16,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 23:47:16,015 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting insertionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insertionSortErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-25 23:47:16,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:47:16,015 INFO L85 PathProgramCache]: Analyzing trace with hash -2097319415, now seen corresponding path program 1 times [2022-11-25 23:47:16,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:47:16,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692812882] [2022-11-25 23:47:16,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:47:16,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:47:16,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:47:16,188 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:47:16,189 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:47:16,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692812882] [2022-11-25 23:47:16,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692812882] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:47:16,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084914462] [2022-11-25 23:47:16,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:47:16,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:47:16,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:47:16,191 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:47:16,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 23:47:16,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:47:16,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-25 23:47:16,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:47:16,412 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:47:16,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:47:16,522 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:47:16,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084914462] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:47:16,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [267469157] [2022-11-25 23:47:16,526 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-25 23:47:16,526 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:47:16,527 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-25 23:47:16,532 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:47:16,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 18 [2022-11-25 23:47:16,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242299009] [2022-11-25 23:47:16,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:47:16,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-25 23:47:16,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:47:16,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-25 23:47:16,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2022-11-25 23:47:16,537 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 18 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 13 states have internal predecessors, (34), 3 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:16,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:47:16,737 INFO L93 Difference]: Finished difference Result 68 states and 73 transitions. [2022-11-25 23:47:16,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 23:47:16,738 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 13 states have internal predecessors, (34), 3 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-25 23:47:16,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:47:16,739 INFO L225 Difference]: With dead ends: 68 [2022-11-25 23:47:16,739 INFO L226 Difference]: Without dead ends: 68 [2022-11-25 23:47:16,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 20 SyntacticMatches, 6 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2022-11-25 23:47:16,740 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 42 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:47:16,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 227 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:47:16,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-11-25 23:47:16,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 60. [2022-11-25 23:47:16,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 51 states have internal predecessors, (55), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-25 23:47:16,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2022-11-25 23:47:16,756 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 17 [2022-11-25 23:47:16,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:47:16,757 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2022-11-25 23:47:16,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 13 states have internal predecessors, (34), 3 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:16,757 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2022-11-25 23:47:16,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-25 23:47:16,757 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:47:16,758 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:47:16,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 23:47:16,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-25 23:47:16,964 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting insertionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insertionSortErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-25 23:47:16,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:47:16,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1353961228, now seen corresponding path program 2 times [2022-11-25 23:47:16,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:47:16,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107562785] [2022-11-25 23:47:16,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:47:16,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:47:16,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:47:17,324 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:47:17,324 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:47:17,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107562785] [2022-11-25 23:47:17,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107562785] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:47:17,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623352717] [2022-11-25 23:47:17,325 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 23:47:17,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:47:17,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:47:17,326 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:47:17,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 23:47:17,411 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-25 23:47:17,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:47:17,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-25 23:47:17,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:47:17,727 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 23:47:17,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:47:18,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-25 23:47:18,333 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 23:47:18,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623352717] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:47:18,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [626029166] [2022-11-25 23:47:18,338 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-25 23:47:18,338 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:47:18,339 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-25 23:47:18,340 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:47:18,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 27 [2022-11-25 23:47:18,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197808087] [2022-11-25 23:47:18,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:47:18,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-25 23:47:18,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:47:18,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-25 23:47:18,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2022-11-25 23:47:18,343 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand has 28 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 22 states have internal predecessors, (47), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:19,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:47:19,777 INFO L93 Difference]: Finished difference Result 86 states and 93 transitions. [2022-11-25 23:47:19,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-25 23:47:19,778 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 22 states have internal predecessors, (47), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-25 23:47:19,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:47:19,778 INFO L225 Difference]: With dead ends: 86 [2022-11-25 23:47:19,778 INFO L226 Difference]: Without dead ends: 86 [2022-11-25 23:47:19,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=334, Invalid=1828, Unknown=0, NotChecked=0, Total=2162 [2022-11-25 23:47:19,780 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 212 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 23:47:19,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 275 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 23:47:19,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-11-25 23:47:19,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 74. [2022-11-25 23:47:19,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 58 states have (on average 1.2758620689655173) internal successors, (74), 63 states have internal predecessors, (74), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-25 23:47:19,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 86 transitions. [2022-11-25 23:47:19,784 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 86 transitions. Word has length 19 [2022-11-25 23:47:19,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:47:19,785 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 86 transitions. [2022-11-25 23:47:19,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 22 states have internal predecessors, (47), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:19,785 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 86 transitions. [2022-11-25 23:47:19,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-25 23:47:19,785 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:47:19,786 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:47:19,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 23:47:19,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-25 23:47:19,986 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting insertionSortErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insertionSortErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-25 23:47:19,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:47:19,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1823609869, now seen corresponding path program 1 times [2022-11-25 23:47:19,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:47:19,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984534438] [2022-11-25 23:47:19,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:47:19,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:47:20,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:47:20,177 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-25 23:47:20,178 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:47:20,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984534438] [2022-11-25 23:47:20,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984534438] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:47:20,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230272301] [2022-11-25 23:47:20,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:47:20,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:47:20,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:47:20,180 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:47:20,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 23:47:20,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:47:20,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 23:47:20,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:47:20,404 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-25 23:47:20,405 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:47:20,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230272301] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:47:20,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 23:47:20,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 13 [2022-11-25 23:47:20,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625182541] [2022-11-25 23:47:20,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:47:20,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 23:47:20,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:47:20,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 23:47:20,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-11-25 23:47:20,407 INFO L87 Difference]: Start difference. First operand 74 states and 86 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:20,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:47:20,599 INFO L93 Difference]: Finished difference Result 85 states and 102 transitions. [2022-11-25 23:47:20,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 23:47:20,599 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-25 23:47:20,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:47:20,600 INFO L225 Difference]: With dead ends: 85 [2022-11-25 23:47:20,601 INFO L226 Difference]: Without dead ends: 85 [2022-11-25 23:47:20,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-25 23:47:20,601 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 41 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:47:20,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 50 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:47:20,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-11-25 23:47:20,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 73. [2022-11-25 23:47:20,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 60 states have (on average 1.1666666666666667) internal successors, (70), 62 states have internal predecessors, (70), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-25 23:47:20,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 82 transitions. [2022-11-25 23:47:20,617 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 82 transitions. Word has length 22 [2022-11-25 23:47:20,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:47:20,618 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 82 transitions. [2022-11-25 23:47:20,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:20,619 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 82 transitions. [2022-11-25 23:47:20,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-25 23:47:20,621 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:47:20,621 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:47:20,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 23:47:20,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:47:20,827 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting insertionSortErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insertionSortErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-25 23:47:20,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:47:20,827 INFO L85 PathProgramCache]: Analyzing trace with hash 697337115, now seen corresponding path program 1 times [2022-11-25 23:47:20,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:47:20,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380942563] [2022-11-25 23:47:20,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:47:20,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:47:20,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:47:20,940 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 23:47:20,941 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:47:20,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380942563] [2022-11-25 23:47:20,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380942563] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:47:20,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738719426] [2022-11-25 23:47:20,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:47:20,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:47:20,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:47:20,943 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:47:20,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 23:47:21,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:47:21,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 23:47:21,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:47:21,073 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 23:47:21,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:47:21,148 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 23:47:21,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738719426] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:47:21,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1262962558] [2022-11-25 23:47:21,152 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-25 23:47:21,152 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:47:21,153 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-25 23:47:21,154 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:47:21,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2022-11-25 23:47:21,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006343682] [2022-11-25 23:47:21,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:47:21,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 23:47:21,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:47:21,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 23:47:21,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-25 23:47:21,157 INFO L87 Difference]: Start difference. First operand 73 states and 82 transitions. Second operand has 11 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:21,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:47:21,369 INFO L93 Difference]: Finished difference Result 95 states and 111 transitions. [2022-11-25 23:47:21,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 23:47:21,370 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-25 23:47:21,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:47:21,371 INFO L225 Difference]: With dead ends: 95 [2022-11-25 23:47:21,371 INFO L226 Difference]: Without dead ends: 95 [2022-11-25 23:47:21,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 38 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2022-11-25 23:47:21,372 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 101 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:47:21,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 112 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:47:21,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-11-25 23:47:21,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 77. [2022-11-25 23:47:21,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 64 states have (on average 1.15625) internal successors, (74), 66 states have internal predecessors, (74), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-25 23:47:21,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 86 transitions. [2022-11-25 23:47:21,376 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 86 transitions. Word has length 23 [2022-11-25 23:47:21,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:47:21,377 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 86 transitions. [2022-11-25 23:47:21,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:21,377 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 86 transitions. [2022-11-25 23:47:21,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-25 23:47:21,377 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:47:21,378 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:47:21,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 23:47:21,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-25 23:47:21,578 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [insertionSortErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-25 23:47:21,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:47:21,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1786822998, now seen corresponding path program 1 times [2022-11-25 23:47:21,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:47:21,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995724955] [2022-11-25 23:47:21,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:47:21,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:47:21,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:47:21,675 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 23:47:21,675 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:47:21,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995724955] [2022-11-25 23:47:21,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995724955] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:47:21,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:47:21,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:47:21,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829976064] [2022-11-25 23:47:21,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:47:21,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:47:21,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:47:21,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:47:21,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:47:21,678 INFO L87 Difference]: Start difference. First operand 77 states and 86 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 23:47:21,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:47:21,709 INFO L93 Difference]: Finished difference Result 76 states and 85 transitions. [2022-11-25 23:47:21,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:47:21,710 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2022-11-25 23:47:21,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:47:21,711 INFO L225 Difference]: With dead ends: 76 [2022-11-25 23:47:21,711 INFO L226 Difference]: Without dead ends: 47 [2022-11-25 23:47:21,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:47:21,712 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:47:21,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:47:21,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-25 23:47:21,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 30. [2022-11-25 23:47:21,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:21,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2022-11-25 23:47:21,715 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 25 [2022-11-25 23:47:21,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:47:21,715 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2022-11-25 23:47:21,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 23:47:21,716 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2022-11-25 23:47:21,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-25 23:47:21,718 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:47:21,718 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:47:21,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-25 23:47:21,719 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting insertionSortErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insertionSortErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-25 23:47:21,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:47:21,721 INFO L85 PathProgramCache]: Analyzing trace with hash -283750908, now seen corresponding path program 1 times [2022-11-25 23:47:21,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:47:21,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818685830] [2022-11-25 23:47:21,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:47:21,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:47:21,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:47:22,159 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 23:47:22,160 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:47:22,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818685830] [2022-11-25 23:47:22,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818685830] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:47:22,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952180371] [2022-11-25 23:47:22,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:47:22,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:47:22,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:47:22,162 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:47:22,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 23:47:22,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:47:22,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 23:47:22,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:47:22,477 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-25 23:47:22,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:47:22,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-25 23:47:22,727 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-25 23:47:22,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952180371] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:47:22,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1499075227] [2022-11-25 23:47:22,729 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-11-25 23:47:22,729 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:47:22,730 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-25 23:47:22,730 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:47:22,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 22 [2022-11-25 23:47:22,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058760038] [2022-11-25 23:47:22,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:47:22,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-25 23:47:22,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:47:22,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-25 23:47:22,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2022-11-25 23:47:22,732 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 21 states have internal predecessors, (57), 4 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:23,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:47:23,329 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2022-11-25 23:47:23,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 23:47:23,330 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 21 states have internal predecessors, (57), 4 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-11-25 23:47:23,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:47:23,330 INFO L225 Difference]: With dead ends: 38 [2022-11-25 23:47:23,330 INFO L226 Difference]: Without dead ends: 0 [2022-11-25 23:47:23,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 43 SyntacticMatches, 5 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=242, Invalid=814, Unknown=0, NotChecked=0, Total=1056 [2022-11-25 23:47:23,331 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 39 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:47:23,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 31 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:47:23,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-25 23:47:23,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-25 23:47:23,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:23,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-25 23:47:23,332 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2022-11-25 23:47:23,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:47:23,332 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-25 23:47:23,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.590909090909091) internal successors, (57), 21 states have internal predecessors, (57), 4 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:47:23,332 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-25 23:47:23,333 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-25 23:47:23,335 INFO L805 garLoopResultBuilder]: Registering result SAFE for location insertionSortErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 16 remaining) [2022-11-25 23:47:23,335 INFO L805 garLoopResultBuilder]: Registering result SAFE for location insertionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 16 remaining) [2022-11-25 23:47:23,336 INFO L805 garLoopResultBuilder]: Registering result SAFE for location insertionSortErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 16 remaining) [2022-11-25 23:47:23,336 INFO L805 garLoopResultBuilder]: Registering result SAFE for location insertionSortErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 16 remaining) [2022-11-25 23:47:23,336 INFO L805 garLoopResultBuilder]: Registering result SAFE for location insertionSortErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 16 remaining) [2022-11-25 23:47:23,336 INFO L805 garLoopResultBuilder]: Registering result SAFE for location insertionSortErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 16 remaining) [2022-11-25 23:47:23,336 INFO L805 garLoopResultBuilder]: Registering result SAFE for location insertionSortErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 16 remaining) [2022-11-25 23:47:23,336 INFO L805 garLoopResultBuilder]: Registering result SAFE for location insertionSortErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 16 remaining) [2022-11-25 23:47:23,336 INFO L805 garLoopResultBuilder]: Registering result SAFE for location insertionSortErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 16 remaining) [2022-11-25 23:47:23,337 INFO L805 garLoopResultBuilder]: Registering result SAFE for location insertionSortErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 16 remaining) [2022-11-25 23:47:23,337 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 16 remaining) [2022-11-25 23:47:23,337 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 16 remaining) [2022-11-25 23:47:23,337 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (3 of 16 remaining) [2022-11-25 23:47:23,337 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE (2 of 16 remaining) [2022-11-25 23:47:23,337 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE (1 of 16 remaining) [2022-11-25 23:47:23,337 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (0 of 16 remaining) [2022-11-25 23:47:23,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-25 23:47:23,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-25 23:47:23,541 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:47:23,543 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 23:47:23,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 11:47:23 BoogieIcfgContainer [2022-11-25 23:47:23,546 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 23:47:23,547 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 23:47:23,547 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 23:47:23,547 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 23:47:23,548 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:47:10" (3/4) ... [2022-11-25 23:47:23,551 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 23:47:23,557 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure insertionSort [2022-11-25 23:47:23,561 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-11-25 23:47:23,561 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-11-25 23:47:23,561 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-25 23:47:23,562 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 23:47:23,604 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur/witness.graphml [2022-11-25 23:47:23,605 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 23:47:23,606 INFO L158 Benchmark]: Toolchain (without parser) took 14182.75ms. Allocated memory was 148.9MB in the beginning and 203.4MB in the end (delta: 54.5MB). Free memory was 104.4MB in the beginning and 160.1MB in the end (delta: -55.7MB). Peak memory consumption was 542.0kB. Max. memory is 16.1GB. [2022-11-25 23:47:23,606 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 148.9MB. Free memory is still 93.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:47:23,606 INFO L158 Benchmark]: CACSL2BoogieTranslator took 223.88ms. Allocated memory is still 148.9MB. Free memory was 104.4MB in the beginning and 94.5MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 23:47:23,607 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.62ms. Allocated memory is still 148.9MB. Free memory was 94.5MB in the beginning and 92.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 23:47:23,607 INFO L158 Benchmark]: Boogie Preprocessor took 26.34ms. Allocated memory is still 148.9MB. Free memory was 92.9MB in the beginning and 91.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:47:23,608 INFO L158 Benchmark]: RCFGBuilder took 656.19ms. Allocated memory is still 148.9MB. Free memory was 91.8MB in the beginning and 76.2MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-25 23:47:23,608 INFO L158 Benchmark]: TraceAbstraction took 13181.31ms. Allocated memory was 148.9MB in the beginning and 203.4MB in the end (delta: 54.5MB). Free memory was 75.6MB in the beginning and 162.8MB in the end (delta: -87.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:47:23,608 INFO L158 Benchmark]: Witness Printer took 58.08ms. Allocated memory is still 203.4MB. Free memory was 162.8MB in the beginning and 160.1MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 23:47:23,619 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 148.9MB. Free memory is still 93.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 223.88ms. Allocated memory is still 148.9MB. Free memory was 104.4MB in the beginning and 94.5MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.62ms. Allocated memory is still 148.9MB. Free memory was 94.5MB in the beginning and 92.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.34ms. Allocated memory is still 148.9MB. Free memory was 92.9MB in the beginning and 91.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 656.19ms. Allocated memory is still 148.9MB. Free memory was 91.8MB in the beginning and 76.2MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 13181.31ms. Allocated memory was 148.9MB in the beginning and 203.4MB in the end (delta: 54.5MB). Free memory was 75.6MB in the beginning and 162.8MB in the end (delta: -87.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 58.08ms. Allocated memory is still 203.4MB. Free memory was 162.8MB in the beginning and 160.1MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 39]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 39]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 39]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 23]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 40 locations, 16 error locations. Started 1 CEGAR loops. OverallTime: 13.1s, OverallIterations: 17, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 693 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 682 mSDsluCounter, 1476 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1090 mSDsCounter, 117 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2104 IncrementalHoareTripleChecker+Invalid, 2221 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 117 mSolverCounterUnsat, 386 mSDtfsCounter, 2104 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 388 GetRequests, 172 SyntacticMatches, 17 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 799 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=77occurred in iteration=15, InterpolantAutomatonStates: 131, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 17 MinimizatonAttempts, 96 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.6s InterpolantComputationTime, 366 NumberOfCodeBlocks, 364 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 438 ConstructedInterpolants, 0 QuantifiedInterpolants, 3381 SizeOfPredicates, 44 NumberOfNonLiveVariables, 789 ConjunctsInSsa, 111 ConjunctsInUnsatCore, 31 InterpolantComputations, 12 PerfectInterpolantSequences, 100/155 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 16 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-25 23:47:23,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48333d97-1167-4b2d-ac9d-6dd500db805a/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE