./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c6847e0a77224cc67de11826c53270ee36a6eb5754e5add0bb0a49165dff2879 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:47:55,628 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:47:55,630 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:47:55,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:47:55,679 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:47:55,683 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:47:55,685 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:47:55,689 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:47:55,692 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:47:55,700 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:47:55,701 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:47:55,703 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:47:55,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:47:55,706 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:47:55,709 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:47:55,717 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:47:55,720 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:47:55,721 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:47:55,724 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:47:55,728 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:47:55,732 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:47:55,734 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:47:55,737 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:47:55,739 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:47:55,744 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:47:55,745 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:47:55,745 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:47:55,746 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:47:55,747 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:47:55,747 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:47:55,748 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:47:55,748 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:47:55,749 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:47:55,750 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:47:55,750 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:47:55,751 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:47:55,751 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:47:55,751 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:47:55,752 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:47:55,752 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:47:55,753 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:47:55,759 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:47:55,786 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:47:55,786 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:47:55,787 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:47:55,787 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:47:55,787 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:47:55,787 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:47:55,788 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:47:55,788 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:47:55,788 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:47:55,788 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:47:55,788 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:47:55,789 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:47:55,789 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:47:55,789 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:47:55,789 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:47:55,790 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:47:55,790 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:47:55,790 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:47:55,790 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:47:55,791 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:47:55,791 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:47:55,791 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:47:55,791 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:47:55,791 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:47:55,792 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:47:55,792 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:47:55,792 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:47:55,792 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:47:55,792 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:47:55,793 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:47:55,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:47:55,793 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:47:55,793 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:47:55,793 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:47:55,794 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:47:55,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:47:55,794 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:47:55,794 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:47:55,794 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:47:55,794 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c6847e0a77224cc67de11826c53270ee36a6eb5754e5add0bb0a49165dff2879 [2021-11-07 01:47:56,091 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:47:56,130 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:47:56,132 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:47:56,134 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:47:56,135 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:47:56,136 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2021-11-07 01:47:56,222 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/data/ec95b4fac/d304bfc4af0749a59e5ba43346649717/FLAG1f8380365 [2021-11-07 01:47:56,740 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:47:56,740 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2021-11-07 01:47:56,748 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/data/ec95b4fac/d304bfc4af0749a59e5ba43346649717/FLAG1f8380365 [2021-11-07 01:47:57,111 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/data/ec95b4fac/d304bfc4af0749a59e5ba43346649717 [2021-11-07 01:47:57,114 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:47:57,115 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:47:57,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:47:57,120 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:47:57,123 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:47:57,123 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:47:57" (1/1) ... [2021-11-07 01:47:57,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26db23cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:47:57, skipping insertion in model container [2021-11-07 01:47:57,125 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:47:57" (1/1) ... [2021-11-07 01:47:57,132 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:47:57,152 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:47:57,364 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c[3615,3628] [2021-11-07 01:47:57,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:47:57,385 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 01:47:57,386 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@663b964c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:47:57, skipping insertion in model container [2021-11-07 01:47:57,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:47:57,387 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:47:57,389 INFO L168 Benchmark]: Toolchain (without parser) took 272.48 ms. Allocated memory was 96.5 MB in the beginning and 125.8 MB in the end (delta: 29.4 MB). Free memory was 65.1 MB in the beginning and 102.1 MB in the end (delta: -36.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:47:57,390 INFO L168 Benchmark]: CDTParser took 0.91 ms. Allocated memory is still 96.5 MB. Free memory is still 51.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:47:57,392 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.39 ms. Allocated memory was 96.5 MB in the beginning and 125.8 MB in the end (delta: 29.4 MB). Free memory was 65.1 MB in the beginning and 102.6 MB in the end (delta: -37.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:47:57,394 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.91 ms. Allocated memory is still 96.5 MB. Free memory is still 51.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 267.39 ms. Allocated memory was 96.5 MB in the beginning and 125.8 MB in the end (delta: 29.4 MB). Free memory was 65.1 MB in the beginning and 102.6 MB in the end (delta: -37.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 144]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c6847e0a77224cc67de11826c53270ee36a6eb5754e5add0bb0a49165dff2879 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:47:59,661 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:47:59,664 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:47:59,707 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:47:59,708 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:47:59,713 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:47:59,715 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:47:59,720 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:47:59,723 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:47:59,732 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:47:59,734 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:47:59,736 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:47:59,737 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:47:59,740 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:47:59,743 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:47:59,748 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:47:59,750 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:47:59,751 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:47:59,754 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:47:59,764 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:47:59,767 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:47:59,768 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:47:59,771 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:47:59,774 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:47:59,785 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:47:59,785 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:47:59,786 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:47:59,788 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:47:59,789 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:47:59,790 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:47:59,791 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:47:59,792 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:47:59,795 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:47:59,796 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:47:59,798 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:47:59,798 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:47:59,799 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:47:59,799 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:47:59,800 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:47:59,802 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:47:59,802 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:47:59,803 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:47:59,867 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:47:59,867 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:47:59,869 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:47:59,869 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:47:59,869 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:47:59,870 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:47:59,870 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:47:59,870 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:47:59,870 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:47:59,872 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:47:59,873 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:47:59,873 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:47:59,874 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:47:59,874 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:47:59,874 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:47:59,874 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:47:59,875 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:47:59,875 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:47:59,875 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:47:59,875 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:47:59,876 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:47:59,876 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:47:59,876 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:47:59,876 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:47:59,877 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:47:59,877 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:47:59,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:47:59,877 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:47:59,878 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:47:59,878 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:47:59,878 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:47:59,878 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:47:59,879 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:47:59,879 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:47:59,880 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:47:59,880 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c6847e0a77224cc67de11826c53270ee36a6eb5754e5add0bb0a49165dff2879 [2021-11-07 01:48:00,249 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:48:00,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:48:00,275 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:48:00,276 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:48:00,277 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:48:00,278 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2021-11-07 01:48:00,359 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/data/ab80fe637/1d4e3f17ebd94b908f856e0b462aadd2/FLAG6bda3b9c5 [2021-11-07 01:48:00,973 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:48:00,974 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2021-11-07 01:48:00,983 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/data/ab80fe637/1d4e3f17ebd94b908f856e0b462aadd2/FLAG6bda3b9c5 [2021-11-07 01:48:01,311 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/data/ab80fe637/1d4e3f17ebd94b908f856e0b462aadd2 [2021-11-07 01:48:01,314 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:48:01,315 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:48:01,317 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:48:01,317 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:48:01,321 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:48:01,322 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:48:01" (1/1) ... [2021-11-07 01:48:01,323 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59900e9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:48:01, skipping insertion in model container [2021-11-07 01:48:01,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:48:01" (1/1) ... [2021-11-07 01:48:01,330 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:48:01,360 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:48:01,556 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c[3615,3628] [2021-11-07 01:48:01,565 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:48:01,596 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:48:01,618 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:48:01,651 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c[3615,3628] [2021-11-07 01:48:01,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:48:01,672 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:48:01,715 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c[3615,3628] [2021-11-07 01:48:01,720 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:48:01,736 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:48:01,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:48:01 WrapperNode [2021-11-07 01:48:01,737 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:48:01,738 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:48:01,738 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:48:01,738 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:48:01,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:48:01" (1/1) ... [2021-11-07 01:48:01,758 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:48:01" (1/1) ... [2021-11-07 01:48:01,791 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:48:01,792 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:48:01,792 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:48:01,792 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:48:01,803 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:48:01" (1/1) ... [2021-11-07 01:48:01,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:48:01" (1/1) ... [2021-11-07 01:48:01,825 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:48:01" (1/1) ... [2021-11-07 01:48:01,826 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:48:01" (1/1) ... [2021-11-07 01:48:01,837 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:48:01" (1/1) ... [2021-11-07 01:48:01,843 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:48:01" (1/1) ... [2021-11-07 01:48:01,846 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:48:01" (1/1) ... [2021-11-07 01:48:01,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:48:01,855 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:48:01,856 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:48:01,856 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:48:01,857 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:48:01" (1/1) ... [2021-11-07 01:48:01,865 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:48:01,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:48:01,899 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:48:01,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:48:01,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:48:01,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:48:01,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:48:01,954 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-07 01:48:01,954 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-07 01:48:01,954 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-07 01:48:01,954 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-07 01:48:01,955 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-07 01:48:01,955 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-07 01:48:01,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-07 01:48:01,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-07 01:48:01,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:48:01,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:48:01,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:48:01,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:48:01,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:48:01,959 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-07 01:48:03,210 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:48:03,210 INFO L299 CfgBuilder]: Removed 41 assume(true) statements. [2021-11-07 01:48:03,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:48:03 BoogieIcfgContainer [2021-11-07 01:48:03,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:48:03,214 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:48:03,214 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:48:03,218 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:48:03,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:48:01" (1/3) ... [2021-11-07 01:48:03,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@511f6c65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:48:03, skipping insertion in model container [2021-11-07 01:48:03,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:48:01" (2/3) ... [2021-11-07 01:48:03,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@511f6c65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:48:03, skipping insertion in model container [2021-11-07 01:48:03,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:48:03" (3/3) ... [2021-11-07 01:48:03,224 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-3-nl.wvr.c [2021-11-07 01:48:03,230 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-07 01:48:03,230 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:48:03,230 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:48:03,230 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-07 01:48:03,278 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,278 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,279 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,279 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,279 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,279 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,279 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,279 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,279 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,280 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,280 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,280 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,280 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,280 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,280 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,280 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,281 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,281 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,281 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,281 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,281 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,282 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,282 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,282 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,282 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,283 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,283 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,283 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,283 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,283 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,283 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,284 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,284 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,284 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,284 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,284 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,284 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,285 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,285 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,285 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,285 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,285 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,286 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,286 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,286 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,286 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,286 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,287 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,287 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,287 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,287 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,288 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,288 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,288 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,288 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,288 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,289 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,289 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,289 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,289 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,289 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,290 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,290 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,290 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,290 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,291 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,291 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,291 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,291 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,292 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,292 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,292 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,292 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,293 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,293 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,293 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,293 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,293 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,294 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,294 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,294 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,294 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,294 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,295 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,295 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,295 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,295 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,296 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,296 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,296 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,299 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,299 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,300 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,300 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,300 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,300 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,301 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,303 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,303 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,303 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,303 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,304 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,304 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,304 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,304 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,305 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,305 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,306 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,307 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,307 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,307 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,307 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,308 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,308 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,308 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,308 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:48:03,314 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-11-07 01:48:03,353 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:48:03,359 INFO L339 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=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:48:03,360 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-07 01:48:03,377 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-07 01:48:03,388 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 188 places, 196 transitions, 416 flow [2021-11-07 01:48:03,391 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 188 places, 196 transitions, 416 flow [2021-11-07 01:48:03,393 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 188 places, 196 transitions, 416 flow [2021-11-07 01:48:03,485 INFO L129 PetriNetUnfolder]: 18/193 cut-off events. [2021-11-07 01:48:03,485 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-11-07 01:48:03,491 INFO L84 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 193 events. 18/193 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 124 event pairs, 0 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 156. Up to 3 conditions per place. [2021-11-07 01:48:03,496 INFO L116 LiptonReduction]: Number of co-enabled transitions 1880 [2021-11-07 01:48:26,913 INFO L131 LiptonReduction]: Checked pairs total: 2574 [2021-11-07 01:48:26,913 INFO L133 LiptonReduction]: Total number of compositions: 200 [2021-11-07 01:48:26,928 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 32 transitions, 88 flow [2021-11-07 01:48:26,974 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 138 states, 137 states have (on average 3.343065693430657) internal successors, (458), 137 states have internal predecessors, (458), 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) [2021-11-07 01:48:26,987 INFO L276 IsEmpty]: Start isEmpty. Operand has 138 states, 137 states have (on average 3.343065693430657) internal successors, (458), 137 states have internal predecessors, (458), 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) [2021-11-07 01:48:27,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-07 01:48:27,006 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:48:27,007 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:48:27,009 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 01:48:27,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:48:27,016 INFO L85 PathProgramCache]: Analyzing trace with hash 475810047, now seen corresponding path program 1 times [2021-11-07 01:48:27,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:48:27,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1237572418] [2021-11-07 01:48:27,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:48:27,036 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:48:27,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:48:27,043 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:48:27,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:48:27,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:48:27,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:48:27,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:48:27,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:48:27,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:48:27,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:48:27,446 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:48:27,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1237572418] [2021-11-07 01:48:27,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1237572418] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:48:27,447 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:48:27,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:48:27,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141770588] [2021-11-07 01:48:27,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:48:27,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:48:27,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:48:27,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:48:27,498 INFO L87 Difference]: Start difference. First operand has 138 states, 137 states have (on average 3.343065693430657) internal successors, (458), 137 states have internal predecessors, (458), 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) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 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) [2021-11-07 01:48:27,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:48:27,551 INFO L93 Difference]: Finished difference Result 138 states and 428 transitions. [2021-11-07 01:48:27,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:48:27,552 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 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 21 [2021-11-07 01:48:27,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:48:27,566 INFO L225 Difference]: With dead ends: 138 [2021-11-07 01:48:27,570 INFO L226 Difference]: Without dead ends: 138 [2021-11-07 01:48:27,588 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:48:27,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-11-07 01:48:27,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2021-11-07 01:48:27,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 3.124087591240876) internal successors, (428), 137 states have internal predecessors, (428), 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) [2021-11-07 01:48:27,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 428 transitions. [2021-11-07 01:48:27,687 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 428 transitions. Word has length 21 [2021-11-07 01:48:27,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:48:27,689 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 428 transitions. [2021-11-07 01:48:27,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 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) [2021-11-07 01:48:27,690 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 428 transitions. [2021-11-07 01:48:27,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-07 01:48:27,696 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:48:27,696 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:48:27,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:48:27,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:48:27,898 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 01:48:27,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:48:27,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1352168871, now seen corresponding path program 1 times [2021-11-07 01:48:27,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:48:27,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [568460058] [2021-11-07 01:48:27,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:48:27,900 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:48:27,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:48:27,901 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:48:27,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:48:28,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:48:28,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:48:28,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:48:28,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:48:28,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:48:28,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:48:28,498 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:48:28,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [568460058] [2021-11-07 01:48:28,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [568460058] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:48:28,499 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:48:28,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-07 01:48:28,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439084684] [2021-11-07 01:48:28,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:48:28,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:48:28,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:48:28,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:48:28,503 INFO L87 Difference]: Start difference. First operand 138 states and 428 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 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) [2021-11-07 01:48:28,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:48:28,600 INFO L93 Difference]: Finished difference Result 174 states and 543 transitions. [2021-11-07 01:48:28,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:48:28,602 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 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 22 [2021-11-07 01:48:28,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:48:28,606 INFO L225 Difference]: With dead ends: 174 [2021-11-07 01:48:28,606 INFO L226 Difference]: Without dead ends: 174 [2021-11-07 01:48:28,608 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:48:28,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-11-07 01:48:28,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2021-11-07 01:48:28,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 3.138728323699422) internal successors, (543), 173 states have internal predecessors, (543), 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) [2021-11-07 01:48:28,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 543 transitions. [2021-11-07 01:48:28,629 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 543 transitions. Word has length 22 [2021-11-07 01:48:28,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:48:28,629 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 543 transitions. [2021-11-07 01:48:28,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 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) [2021-11-07 01:48:28,630 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 543 transitions. [2021-11-07 01:48:28,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-07 01:48:28,632 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:48:28,633 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:48:28,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:48:28,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:48:28,847 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 01:48:28,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:48:28,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1339896995, now seen corresponding path program 2 times [2021-11-07 01:48:28,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:48:28,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1257423244] [2021-11-07 01:48:28,849 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:48:28,849 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:48:28,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:48:28,850 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:48:28,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:48:29,041 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 01:48:29,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:48:29,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:48:29,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:48:29,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:48:29,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:48:29,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:48:29,393 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:48:29,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1257423244] [2021-11-07 01:48:29,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1257423244] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:48:29,397 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:48:29,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-07 01:48:29,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260439010] [2021-11-07 01:48:29,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:48:29,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:48:29,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:48:29,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:48:29,403 INFO L87 Difference]: Start difference. First operand 174 states and 543 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 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) [2021-11-07 01:48:29,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:48:29,460 INFO L93 Difference]: Finished difference Result 158 states and 480 transitions. [2021-11-07 01:48:29,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:48:29,462 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 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 22 [2021-11-07 01:48:29,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:48:29,465 INFO L225 Difference]: With dead ends: 158 [2021-11-07 01:48:29,465 INFO L226 Difference]: Without dead ends: 158 [2021-11-07 01:48:29,465 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:48:29,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-11-07 01:48:29,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2021-11-07 01:48:29,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 3.0573248407643314) internal successors, (480), 157 states have internal predecessors, (480), 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) [2021-11-07 01:48:29,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 480 transitions. [2021-11-07 01:48:29,481 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 480 transitions. Word has length 22 [2021-11-07 01:48:29,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:48:29,482 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 480 transitions. [2021-11-07 01:48:29,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 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) [2021-11-07 01:48:29,482 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 480 transitions. [2021-11-07 01:48:29,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-07 01:48:29,485 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:48:29,485 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:48:29,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:48:29,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:48:29,700 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 01:48:29,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:48:29,700 INFO L85 PathProgramCache]: Analyzing trace with hash -413463407, now seen corresponding path program 3 times [2021-11-07 01:48:29,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:48:29,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2015042963] [2021-11-07 01:48:29,701 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:48:29,701 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:48:29,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:48:29,703 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:48:29,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:48:29,960 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-07 01:48:29,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:48:29,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:48:29,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:48:30,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:48:30,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:48:30,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:48:30,271 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:48:30,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2015042963] [2021-11-07 01:48:30,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2015042963] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:48:30,272 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:48:30,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 01:48:30,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691844747] [2021-11-07 01:48:30,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:48:30,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:48:30,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:48:30,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:48:30,273 INFO L87 Difference]: Start difference. First operand 158 states and 480 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 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) [2021-11-07 01:48:30,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:48:30,401 INFO L93 Difference]: Finished difference Result 189 states and 539 transitions. [2021-11-07 01:48:30,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:48:30,405 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 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 22 [2021-11-07 01:48:30,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:48:30,407 INFO L225 Difference]: With dead ends: 189 [2021-11-07 01:48:30,407 INFO L226 Difference]: Without dead ends: 159 [2021-11-07 01:48:30,408 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:48:30,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-11-07 01:48:30,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2021-11-07 01:48:30,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 3.0443037974683542) internal successors, (481), 158 states have internal predecessors, (481), 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) [2021-11-07 01:48:30,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 481 transitions. [2021-11-07 01:48:30,433 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 481 transitions. Word has length 22 [2021-11-07 01:48:30,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:48:30,433 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 481 transitions. [2021-11-07 01:48:30,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 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) [2021-11-07 01:48:30,434 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 481 transitions. [2021-11-07 01:48:30,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-07 01:48:30,443 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:48:30,443 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:48:30,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:48:30,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:48:30,656 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 01:48:30,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:48:30,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1446450384, now seen corresponding path program 1 times [2021-11-07 01:48:30,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:48:30,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [718259454] [2021-11-07 01:48:30,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:48:30,658 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:48:30,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:48:30,659 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:48:30,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:48:30,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:48:30,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:48:30,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:48:31,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:48:31,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:48:31,310 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:48:31,311 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:48:31,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [718259454] [2021-11-07 01:48:31,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [718259454] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:48:31,312 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:48:31,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:48:31,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716733241] [2021-11-07 01:48:31,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:48:31,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:48:31,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:48:31,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:48:31,314 INFO L87 Difference]: Start difference. First operand 159 states and 481 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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) [2021-11-07 01:48:31,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:48:31,511 INFO L93 Difference]: Finished difference Result 241 states and 696 transitions. [2021-11-07 01:48:31,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:48:31,512 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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 23 [2021-11-07 01:48:31,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:48:31,515 INFO L225 Difference]: With dead ends: 241 [2021-11-07 01:48:31,515 INFO L226 Difference]: Without dead ends: 160 [2021-11-07 01:48:31,515 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:48:31,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-11-07 01:48:31,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2021-11-07 01:48:31,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 3.0314465408805034) internal successors, (482), 159 states have internal predecessors, (482), 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) [2021-11-07 01:48:31,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 482 transitions. [2021-11-07 01:48:31,527 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 482 transitions. Word has length 23 [2021-11-07 01:48:31,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:48:31,527 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 482 transitions. [2021-11-07 01:48:31,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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) [2021-11-07 01:48:31,527 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 482 transitions. [2021-11-07 01:48:31,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-07 01:48:31,529 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:48:31,529 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:48:31,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:48:31,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:48:31,744 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 01:48:31,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:48:31,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1735975658, now seen corresponding path program 1 times [2021-11-07 01:48:31,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:48:31,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1972080283] [2021-11-07 01:48:31,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:48:31,746 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:48:31,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:48:31,747 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:48:31,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:48:32,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:48:32,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 01:48:32,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:48:32,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:48:32,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:48:33,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:48:33,305 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:48:33,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1972080283] [2021-11-07 01:48:33,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1972080283] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:48:33,305 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:48:33,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-11-07 01:48:33,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439363511] [2021-11-07 01:48:33,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-07 01:48:33,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:48:33,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-07 01:48:33,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-11-07 01:48:33,307 INFO L87 Difference]: Start difference. First operand 160 states and 482 transitions. Second operand has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 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) [2021-11-07 01:48:34,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:48:34,011 INFO L93 Difference]: Finished difference Result 225 states and 668 transitions. [2021-11-07 01:48:34,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 01:48:34,012 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 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 24 [2021-11-07 01:48:34,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:48:34,014 INFO L225 Difference]: With dead ends: 225 [2021-11-07 01:48:34,014 INFO L226 Difference]: Without dead ends: 218 [2021-11-07 01:48:34,014 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2021-11-07 01:48:34,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-11-07 01:48:34,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 182. [2021-11-07 01:48:34,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 2.9281767955801103) internal successors, (530), 181 states have internal predecessors, (530), 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) [2021-11-07 01:48:34,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 530 transitions. [2021-11-07 01:48:34,025 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 530 transitions. Word has length 24 [2021-11-07 01:48:34,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:48:34,025 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 530 transitions. [2021-11-07 01:48:34,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 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) [2021-11-07 01:48:34,026 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 530 transitions. [2021-11-07 01:48:34,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-07 01:48:34,027 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:48:34,027 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:48:34,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:48:34,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:48:34,243 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 01:48:34,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:48:34,243 INFO L85 PathProgramCache]: Analyzing trace with hash 421009522, now seen corresponding path program 2 times [2021-11-07 01:48:34,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:48:34,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2141771283] [2021-11-07 01:48:34,244 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:48:34,244 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:48:34,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:48:34,244 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:48:34,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:48:34,458 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 01:48:34,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:48:34,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 01:48:34,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:48:35,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:48:35,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:48:35,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:48:35,648 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:48:35,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2141771283] [2021-11-07 01:48:35,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2141771283] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:48:35,648 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:48:35,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-11-07 01:48:35,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072708356] [2021-11-07 01:48:35,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-07 01:48:35,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:48:35,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-07 01:48:35,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-11-07 01:48:35,650 INFO L87 Difference]: Start difference. First operand 182 states and 530 transitions. Second operand has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 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) [2021-11-07 01:48:36,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:48:36,568 INFO L93 Difference]: Finished difference Result 289 states and 843 transitions. [2021-11-07 01:48:36,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 01:48:36,569 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 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 24 [2021-11-07 01:48:36,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:48:36,572 INFO L225 Difference]: With dead ends: 289 [2021-11-07 01:48:36,572 INFO L226 Difference]: Without dead ends: 282 [2021-11-07 01:48:36,573 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2021-11-07 01:48:36,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-11-07 01:48:36,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 202. [2021-11-07 01:48:36,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 2.900497512437811) internal successors, (583), 201 states have internal predecessors, (583), 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) [2021-11-07 01:48:36,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 583 transitions. [2021-11-07 01:48:36,584 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 583 transitions. Word has length 24 [2021-11-07 01:48:36,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:48:36,584 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 583 transitions. [2021-11-07 01:48:36,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 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) [2021-11-07 01:48:36,585 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 583 transitions. [2021-11-07 01:48:36,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-07 01:48:36,586 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:48:36,586 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:48:36,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:48:36,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:48:36,799 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 01:48:36,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:48:36,800 INFO L85 PathProgramCache]: Analyzing trace with hash -108662146, now seen corresponding path program 3 times [2021-11-07 01:48:36,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:48:36,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1639529211] [2021-11-07 01:48:36,800 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:48:36,801 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:48:36,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:48:36,801 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:48:36,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:48:37,075 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-07 01:48:37,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:48:37,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 01:48:37,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:48:37,627 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:48:37,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:48:38,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:48:38,231 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:48:38,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1639529211] [2021-11-07 01:48:38,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1639529211] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:48:38,231 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:48:38,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-11-07 01:48:38,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513711089] [2021-11-07 01:48:38,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-07 01:48:38,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:48:38,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-07 01:48:38,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-11-07 01:48:38,233 INFO L87 Difference]: Start difference. First operand 202 states and 583 transitions. Second operand has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 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) [2021-11-07 01:48:39,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:48:39,045 INFO L93 Difference]: Finished difference Result 327 states and 943 transitions. [2021-11-07 01:48:39,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 01:48:39,046 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 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 24 [2021-11-07 01:48:39,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:48:39,048 INFO L225 Difference]: With dead ends: 327 [2021-11-07 01:48:39,048 INFO L226 Difference]: Without dead ends: 320 [2021-11-07 01:48:39,049 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2021-11-07 01:48:39,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2021-11-07 01:48:39,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 210. [2021-11-07 01:48:39,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 2.851674641148325) internal successors, (596), 209 states have internal predecessors, (596), 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) [2021-11-07 01:48:39,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 596 transitions. [2021-11-07 01:48:39,060 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 596 transitions. Word has length 24 [2021-11-07 01:48:39,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:48:39,060 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 596 transitions. [2021-11-07 01:48:39,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 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) [2021-11-07 01:48:39,060 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 596 transitions. [2021-11-07 01:48:39,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-07 01:48:39,062 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:48:39,062 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:48:39,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:48:39,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:48:39,275 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 01:48:39,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:48:39,275 INFO L85 PathProgramCache]: Analyzing trace with hash -2043308636, now seen corresponding path program 4 times [2021-11-07 01:48:39,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:48:39,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1063049346] [2021-11-07 01:48:39,276 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 01:48:39,276 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:48:39,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:48:39,277 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:48:39,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:48:39,696 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 01:48:39,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:48:39,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 01:48:39,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:48:40,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:48:40,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:48:40,791 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:48:40,791 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:48:40,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1063049346] [2021-11-07 01:48:40,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1063049346] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:48:40,791 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:48:40,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-11-07 01:48:40,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159537919] [2021-11-07 01:48:40,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-07 01:48:40,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:48:40,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-07 01:48:40,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-11-07 01:48:40,793 INFO L87 Difference]: Start difference. First operand 210 states and 596 transitions. Second operand has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 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) [2021-11-07 01:48:41,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:48:41,582 INFO L93 Difference]: Finished difference Result 285 states and 831 transitions. [2021-11-07 01:48:41,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 01:48:41,583 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 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 24 [2021-11-07 01:48:41,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:48:41,585 INFO L225 Difference]: With dead ends: 285 [2021-11-07 01:48:41,585 INFO L226 Difference]: Without dead ends: 278 [2021-11-07 01:48:41,586 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2021-11-07 01:48:41,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-11-07 01:48:41,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 206. [2021-11-07 01:48:41,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 2.848780487804878) internal successors, (584), 205 states have internal predecessors, (584), 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) [2021-11-07 01:48:41,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 584 transitions. [2021-11-07 01:48:41,595 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 584 transitions. Word has length 24 [2021-11-07 01:48:41,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:48:41,596 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 584 transitions. [2021-11-07 01:48:41,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 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) [2021-11-07 01:48:41,596 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 584 transitions. [2021-11-07 01:48:41,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-07 01:48:41,597 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:48:41,598 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:48:41,614 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-07 01:48:41,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:48:41,811 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 01:48:41,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:48:41,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1645647296, now seen corresponding path program 1 times [2021-11-07 01:48:41,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:48:41,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1683279119] [2021-11-07 01:48:41,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:48:41,812 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:48:41,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:48:41,813 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:48:41,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365617e2-07c3-4872-85ec-4f18a42b2bd6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:48:42,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:48:42,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 01:48:42,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:48:42,694 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:48:42,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:48:49,229 WARN L207 SmtUtils]: Spent 6.01 s on a formula simplification. DAG size of input: 530 DAG size of output: 308 [2021-11-07 01:48:49,236 INFO L354 Elim1Store]: treesize reduction 1069, result has 53.4 percent of original size [2021-11-07 01:48:49,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 176 treesize of output 1259