./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-queue-add-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-queue-add-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs --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 6990ac65798f2c5a95ce01b01bd39640075d7bea37e69dff3da0d3d7c4b56ab2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:34:23,520 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:34:23,523 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:34:23,588 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:34:23,589 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:34:23,594 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:34:23,597 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:34:23,602 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:34:23,605 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:34:23,613 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:34:23,615 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:34:23,616 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:34:23,617 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:34:23,620 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:34:23,623 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:34:23,629 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:34:23,632 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:34:23,633 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:34:23,636 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:34:23,640 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:34:23,645 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:34:23,652 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:34:23,654 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:34:23,657 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:34:23,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:34:23,664 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:34:23,665 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:34:23,667 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:34:23,668 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:34:23,669 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:34:23,670 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:34:23,671 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:34:23,673 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:34:23,674 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:34:23,676 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:34:23,676 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:34:23,677 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:34:23,677 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:34:23,678 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:34:23,679 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:34:23,679 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:34:23,680 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 14:34:23,734 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:34:23,735 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:34:23,736 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:34:23,736 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:34:23,737 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:34:23,739 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:34:23,739 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:34:23,740 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:34:23,740 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:34:23,740 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:34:23,741 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:34:23,742 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:34:23,742 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:34:23,742 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:34:23,743 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:34:23,743 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:34:23,744 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:34:23,744 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:34:23,744 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:34:23,745 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:34:23,745 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:34:23,745 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:34:23,745 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:34:23,746 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:34:23,746 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:34:23,746 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:34:23,746 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:34:23,747 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:34:23,747 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:34:23,749 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:34:23,749 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:34:23,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:34:23,750 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:34:23,750 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:34:23,751 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:34:23,751 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:34:23,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:34:23,751 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:34:23,752 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:34:23,752 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:34:23,752 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_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6990ac65798f2c5a95ce01b01bd39640075d7bea37e69dff3da0d3d7c4b56ab2 [2021-11-19 14:34:24,014 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:34:24,038 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:34:24,040 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:34:24,042 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:34:24,042 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:34:24,043 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/weaver/popl20-queue-add-3.wvr.c [2021-11-19 14:34:24,140 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/data/3d14e0a59/43b98079289246e98bc0422a74f94f4e/FLAG390f4c13f [2021-11-19 14:34:24,712 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:34:24,713 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/sv-benchmarks/c/weaver/popl20-queue-add-3.wvr.c [2021-11-19 14:34:24,721 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/data/3d14e0a59/43b98079289246e98bc0422a74f94f4e/FLAG390f4c13f [2021-11-19 14:34:25,060 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/data/3d14e0a59/43b98079289246e98bc0422a74f94f4e [2021-11-19 14:34:25,064 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:34:25,067 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:34:25,075 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:34:25,076 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:34:25,079 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:34:25,080 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:34:25" (1/1) ... [2021-11-19 14:34:25,081 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60b1697a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:34:25, skipping insertion in model container [2021-11-19 14:34:25,082 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:34:25" (1/1) ... [2021-11-19 14:34:25,091 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:34:25,134 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:34:25,344 WARN L230 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_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/sv-benchmarks/c/weaver/popl20-queue-add-3.wvr.c[3412,3425] [2021-11-19 14:34:25,364 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:34:25,379 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) [2021-11-19 14:34:25,380 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@63c49c79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:34:25, skipping insertion in model container [2021-11-19 14:34:25,381 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:34:25,381 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:34:25,384 INFO L158 Benchmark]: Toolchain (without parser) took 315.61ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 50.3MB in the beginning and 80.1MB in the end (delta: -29.8MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. [2021-11-19 14:34:25,385 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 86.0MB. Free memory was 60.7MB in the beginning and 60.7MB in the end (delta: 28.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:34:25,388 INFO L158 Benchmark]: CACSL2BoogieTranslator took 306.54ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 50.1MB in the beginning and 80.1MB in the end (delta: -30.0MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. [2021-11-19 14:34:25,391 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 86.0MB. Free memory was 60.7MB in the beginning and 60.7MB in the end (delta: 28.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 306.54ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 50.1MB in the beginning and 80.1MB in the end (delta: -30.0MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 135]: 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_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-queue-add-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs --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 6990ac65798f2c5a95ce01b01bd39640075d7bea37e69dff3da0d3d7c4b56ab2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:34:27,826 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:34:27,831 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:34:27,905 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:34:27,906 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:34:27,907 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:34:27,910 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:34:27,913 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:34:27,915 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:34:27,917 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:34:27,918 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:34:27,920 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:34:27,921 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:34:27,923 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:34:27,924 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:34:27,926 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:34:27,928 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:34:27,929 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:34:27,932 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:34:27,935 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:34:27,937 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:34:27,939 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:34:27,941 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:34:27,942 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:34:27,946 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:34:27,947 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:34:27,947 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:34:27,949 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:34:27,950 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:34:27,951 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:34:27,952 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:34:27,953 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:34:27,954 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:34:27,956 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:34:27,957 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:34:27,958 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:34:27,959 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:34:27,959 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:34:27,960 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:34:27,961 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:34:27,963 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:34:27,964 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-19 14:34:27,993 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:34:27,994 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:34:27,995 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:34:27,995 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:34:27,995 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:34:27,996 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:34:27,996 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:34:27,996 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:34:27,997 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:34:27,997 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:34:27,998 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:34:27,998 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:34:27,999 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:34:27,999 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:34:27,999 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:34:27,999 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:34:28,000 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:34:28,000 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:34:28,000 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:34:28,000 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:34:28,001 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:34:28,001 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:34:28,001 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:34:28,002 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:34:28,002 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:34:28,002 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:34:28,003 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:34:28,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:34:28,003 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:34:28,003 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:34:28,004 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:34:28,004 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:34:28,004 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:34:28,005 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:34:28,005 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:34:28,005 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:34:28,005 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_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6990ac65798f2c5a95ce01b01bd39640075d7bea37e69dff3da0d3d7c4b56ab2 [2021-11-19 14:34:28,444 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:34:28,488 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:34:28,497 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:34:28,499 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:34:28,500 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:34:28,502 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/weaver/popl20-queue-add-3.wvr.c [2021-11-19 14:34:28,599 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/data/1677b288d/ce264fdd8ae045389b16050ab8474251/FLAG55e63db40 [2021-11-19 14:34:29,323 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:34:29,325 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/sv-benchmarks/c/weaver/popl20-queue-add-3.wvr.c [2021-11-19 14:34:29,337 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/data/1677b288d/ce264fdd8ae045389b16050ab8474251/FLAG55e63db40 [2021-11-19 14:34:29,642 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/data/1677b288d/ce264fdd8ae045389b16050ab8474251 [2021-11-19 14:34:29,645 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:34:29,657 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:34:29,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:34:29,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:34:29,672 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:34:29,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:34:29" (1/1) ... [2021-11-19 14:34:29,676 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9ed26d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:34:29, skipping insertion in model container [2021-11-19 14:34:29,676 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:34:29" (1/1) ... [2021-11-19 14:34:29,687 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:34:29,721 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:34:29,962 WARN L230 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_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/sv-benchmarks/c/weaver/popl20-queue-add-3.wvr.c[3412,3425] [2021-11-19 14:34:29,974 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:34:29,987 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:34:29,994 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:34:30,030 WARN L230 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_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/sv-benchmarks/c/weaver/popl20-queue-add-3.wvr.c[3412,3425] [2021-11-19 14:34:30,035 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:34:30,042 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:34:30,119 WARN L230 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_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/sv-benchmarks/c/weaver/popl20-queue-add-3.wvr.c[3412,3425] [2021-11-19 14:34:30,127 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:34:30,148 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:34:30,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:34:30 WrapperNode [2021-11-19 14:34:30,149 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:34:30,151 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:34:30,151 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:34:30,151 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:34:30,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:34:30" (1/1) ... [2021-11-19 14:34:30,176 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:34:30" (1/1) ... [2021-11-19 14:34:30,216 INFO L137 Inliner]: procedures = 27, calls = 55, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 238 [2021-11-19 14:34:30,216 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:34:30,218 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:34:30,219 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:34:30,219 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:34:30,230 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:34:30" (1/1) ... [2021-11-19 14:34:30,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:34:30" (1/1) ... [2021-11-19 14:34:30,256 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:34:30" (1/1) ... [2021-11-19 14:34:30,261 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:34:30" (1/1) ... [2021-11-19 14:34:30,284 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:34:30" (1/1) ... [2021-11-19 14:34:30,291 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:34:30" (1/1) ... [2021-11-19 14:34:30,294 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:34:30" (1/1) ... [2021-11-19 14:34:30,299 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:34:30,301 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:34:30,301 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:34:30,301 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:34:30,302 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:34:30" (1/1) ... [2021-11-19 14:34:30,310 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:34:30,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:34:30,339 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:34:30,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:34:30,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:34:30,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:34:30,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:34:30,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 14:34:30,389 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-19 14:34:30,389 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-19 14:34:30,389 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-19 14:34:30,390 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-19 14:34:30,390 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-19 14:34:30,390 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-19 14:34:30,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-19 14:34:30,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-19 14:34:30,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:34:30,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:34:30,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:34:30,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:34:30,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 14:34:30,393 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-19 14:34:30,514 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:34:30,516 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:34:31,201 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:34:31,434 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:34:31,434 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-19 14:34:31,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:34:31 BoogieIcfgContainer [2021-11-19 14:34:31,437 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:34:31,439 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:34:31,439 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:34:31,443 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:34:31,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:34:29" (1/3) ... [2021-11-19 14:34:31,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7af225bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:34:31, skipping insertion in model container [2021-11-19 14:34:31,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:34:30" (2/3) ... [2021-11-19 14:34:31,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7af225bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:34:31, skipping insertion in model container [2021-11-19 14:34:31,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:34:31" (3/3) ... [2021-11-19 14:34:31,447 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-queue-add-3.wvr.c [2021-11-19 14:34:31,453 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-19 14:34:31,453 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:34:31,453 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 14:34:31,453 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-19 14:34:31,514 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,515 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,515 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,515 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,515 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,516 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,516 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,516 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,516 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,517 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,518 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,518 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,518 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,519 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,519 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,520 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,520 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,520 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,521 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,521 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,521 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,521 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,522 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,522 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,522 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,522 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,523 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,523 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,523 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,523 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,524 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,524 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,524 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,524 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,525 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,525 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,526 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,526 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,526 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,526 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,527 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,527 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,527 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,549 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,549 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,550 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,550 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,550 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,551 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,551 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,552 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,552 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,553 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,553 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,553 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,553 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,554 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,554 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,554 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,555 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,555 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,555 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,556 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,557 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,557 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,557 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,558 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,558 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,558 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,559 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,560 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,561 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,564 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,565 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,565 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,565 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,565 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,566 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,567 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,567 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,567 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,574 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,575 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,575 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,575 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,576 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,576 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,576 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,577 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,577 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,580 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,581 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,581 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,581 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,582 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,582 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,582 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,590 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,590 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,591 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,592 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,592 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,593 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,593 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,593 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,594 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,596 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,596 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,596 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,597 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,597 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,597 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,598 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,598 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,598 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,599 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:34:31,601 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-11-19 14:34:31,673 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:34:31,686 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 [2021-11-19 14:34:31,686 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-19 14:34:31,713 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-19 14:34:31,733 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 196 places, 204 transitions, 432 flow [2021-11-19 14:34:31,737 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 196 places, 204 transitions, 432 flow [2021-11-19 14:34:31,739 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 196 places, 204 transitions, 432 flow [2021-11-19 14:34:31,898 INFO L129 PetriNetUnfolder]: 18/201 cut-off events. [2021-11-19 14:34:31,898 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-11-19 14:34:31,908 INFO L84 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 201 events. 18/201 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 110 event pairs, 0 based on Foata normal form. 0/182 useless extension candidates. Maximal degree in co-relation 163. Up to 3 conditions per place. [2021-11-19 14:34:31,914 INFO L116 LiptonReduction]: Number of co-enabled transitions 1456 [2021-11-19 14:34:56,833 INFO L131 LiptonReduction]: Checked pairs total: 2271 [2021-11-19 14:34:56,833 INFO L133 LiptonReduction]: Total number of compositions: 214 [2021-11-19 14:34:56,842 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 32 transitions, 88 flow [2021-11-19 14:34:56,880 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) [2021-11-19 14:34:56,886 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) [2021-11-19 14:34:56,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 14:34:56,902 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:34:56,903 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:34:56,904 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 14:34:56,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:34:56,910 INFO L85 PathProgramCache]: Analyzing trace with hash 2017729863, now seen corresponding path program 1 times [2021-11-19 14:34:56,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:34:56,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1704188077] [2021-11-19 14:34:56,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:34:56,929 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:34:56,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:34:56,939 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:34:56,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:34:57,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:34:57,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 14:34:57,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:34:57,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:34:57,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:34:57,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:34:57,267 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:34:57,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1704188077] [2021-11-19 14:34:57,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1704188077] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:34:57,268 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:34:57,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 14:34:57,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28492896] [2021-11-19 14:34:57,270 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:34:57,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 14:34:57,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:34:57,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 14:34:57,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:34:57,298 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) [2021-11-19 14:34:57,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:34:57,430 INFO L93 Difference]: Finished difference Result 138 states and 428 transitions. [2021-11-19 14:34:57,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 14:34:57,432 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 [2021-11-19 14:34:57,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:34:57,445 INFO L225 Difference]: With dead ends: 138 [2021-11-19 14:34:57,445 INFO L226 Difference]: Without dead ends: 138 [2021-11-19 14:34:57,446 INFO L932 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 [2021-11-19 14:34:57,453 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:34:57,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 3 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:34:57,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-11-19 14:34:57,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2021-11-19 14:34:57,536 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) [2021-11-19 14:34:57,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 428 transitions. [2021-11-19 14:34:57,548 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 428 transitions. Word has length 21 [2021-11-19 14:34:57,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:34:57,549 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 428 transitions. [2021-11-19 14:34:57,550 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) [2021-11-19 14:34:57,550 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 428 transitions. [2021-11-19 14:34:57,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-19 14:34:57,552 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:34:57,553 INFO L514 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] [2021-11-19 14:34:57,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-19 14:34:57,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:34:57,802 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 14:34:57,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:34:57,805 INFO L85 PathProgramCache]: Analyzing trace with hash 190672365, now seen corresponding path program 1 times [2021-11-19 14:34:57,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:34:57,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1057787444] [2021-11-19 14:34:57,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:34:57,807 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:34:57,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:34:57,809 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:34:57,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:34:57,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:34:57,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:34:57,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:34:58,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:34:58,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:34:58,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:34:58,243 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:34:58,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1057787444] [2021-11-19 14:34:58,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1057787444] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:34:58,243 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:34:58,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 14:34:58,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455024263] [2021-11-19 14:34:58,244 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:34:58,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:34:58,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:34:58,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:34:58,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:34:58,247 INFO L87 Difference]: Start difference. First operand 138 states and 428 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2021-11-19 14:34:58,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:34:58,441 INFO L93 Difference]: Finished difference Result 174 states and 543 transitions. [2021-11-19 14:34:58,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:34:58,441 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 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 [2021-11-19 14:34:58,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:34:58,446 INFO L225 Difference]: With dead ends: 174 [2021-11-19 14:34:58,446 INFO L226 Difference]: Without dead ends: 174 [2021-11-19 14:34:58,446 INFO L932 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 [2021-11-19 14:34:58,448 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 6 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:34:58,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 7 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:34:58,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-11-19 14:34:58,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2021-11-19 14:34:58,469 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) [2021-11-19 14:34:58,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 543 transitions. [2021-11-19 14:34:58,471 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 543 transitions. Word has length 22 [2021-11-19 14:34:58,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:34:58,471 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 543 transitions. [2021-11-19 14:34:58,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2021-11-19 14:34:58,471 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 543 transitions. [2021-11-19 14:34:58,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-19 14:34:58,474 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:34:58,474 INFO L514 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] [2021-11-19 14:34:58,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:34:58,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:34:58,687 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 14:34:58,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:34:58,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1929502307, now seen corresponding path program 2 times [2021-11-19 14:34:58,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:34:58,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [513109678] [2021-11-19 14:34:58,688 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:34:58,688 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:34:58,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:34:58,690 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:34:58,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:34:58,841 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-19 14:34:58,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:34:58,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:34:58,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:34:58,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:34:58,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:34:59,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:34:59,072 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:34:59,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [513109678] [2021-11-19 14:34:59,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [513109678] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:34:59,073 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:34:59,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 14:34:59,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696025140] [2021-11-19 14:34:59,073 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:34:59,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:34:59,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:34:59,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:34:59,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:34:59,075 INFO L87 Difference]: Start difference. First operand 174 states and 543 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 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) [2021-11-19 14:34:59,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:34:59,318 INFO L93 Difference]: Finished difference Result 205 states and 602 transitions. [2021-11-19 14:34:59,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:34:59,319 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 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 [2021-11-19 14:34:59,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:34:59,322 INFO L225 Difference]: With dead ends: 205 [2021-11-19 14:34:59,322 INFO L226 Difference]: Without dead ends: 175 [2021-11-19 14:34:59,322 INFO L932 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 [2021-11-19 14:34:59,324 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 25 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:34:59,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 9 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:34:59,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-11-19 14:34:59,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2021-11-19 14:34:59,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 174 states have (on average 3.1264367816091956) internal successors, (544), 174 states have internal predecessors, (544), 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) [2021-11-19 14:34:59,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 544 transitions. [2021-11-19 14:34:59,342 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 544 transitions. Word has length 22 [2021-11-19 14:34:59,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:34:59,343 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 544 transitions. [2021-11-19 14:34:59,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 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) [2021-11-19 14:34:59,343 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 544 transitions. [2021-11-19 14:34:59,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-19 14:34:59,346 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:34:59,346 INFO L514 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] [2021-11-19 14:34:59,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:34:59,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:34:59,567 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 14:34:59,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:34:59,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1118563851, now seen corresponding path program 1 times [2021-11-19 14:34:59,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:34:59,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1380166562] [2021-11-19 14:34:59,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:34:59,568 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:34:59,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:34:59,569 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:34:59,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:34:59,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:34:59,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:34:59,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:34:59,943 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 14:34:59,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:35:00,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 14:35:00,064 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:35:00,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1380166562] [2021-11-19 14:35:00,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1380166562] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:35:00,065 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:35:00,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 14:35:00,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342258908] [2021-11-19 14:35:00,065 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:35:00,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:35:00,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:35:00,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:35:00,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:35:00,067 INFO L87 Difference]: Start difference. First operand 175 states and 544 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) [2021-11-19 14:35:00,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:35:00,290 INFO L93 Difference]: Finished difference Result 249 states and 729 transitions. [2021-11-19 14:35:00,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:35:00,290 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 [2021-11-19 14:35:00,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:35:00,293 INFO L225 Difference]: With dead ends: 249 [2021-11-19 14:35:00,293 INFO L226 Difference]: Without dead ends: 176 [2021-11-19 14:35:00,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:35:00,294 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 32 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:35:00,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 6 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:35:00,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-11-19 14:35:00,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2021-11-19 14:35:00,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 3.1142857142857143) internal successors, (545), 175 states have internal predecessors, (545), 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) [2021-11-19 14:35:00,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 545 transitions. [2021-11-19 14:35:00,310 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 545 transitions. Word has length 23 [2021-11-19 14:35:00,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:35:00,310 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 545 transitions. [2021-11-19 14:35:00,310 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) [2021-11-19 14:35:00,310 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 545 transitions. [2021-11-19 14:35:00,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-19 14:35:00,319 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:35:00,319 INFO L514 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] [2021-11-19 14:35:00,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:35:00,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:35:00,520 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 14:35:00,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:35:00,520 INFO L85 PathProgramCache]: Analyzing trace with hash -916316711, now seen corresponding path program 1 times [2021-11-19 14:35:00,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:35:00,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [536696187] [2021-11-19 14:35:00,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:35:00,521 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:35:00,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:35:00,523 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:35:00,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:35:00,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:35:00,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 14:35:00,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:35:01,393 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-11-19 14:35:01,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2021-11-19 14:35:01,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 14:35:01,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:35:01,905 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-11-19 14:35:01,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 92 treesize of output 70 [2021-11-19 14:35:22,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 14:35:22,717 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:35:22,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [536696187] [2021-11-19 14:35:22,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [536696187] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:35:22,718 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:35:22,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 12 [2021-11-19 14:35:22,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695799135] [2021-11-19 14:35:22,719 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:35:22,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 14:35:22,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:35:22,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 14:35:22,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-11-19 14:35:22,722 INFO L87 Difference]: Start difference. First operand 176 states and 545 transitions. Second operand has 14 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 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) [2021-11-19 14:35:23,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:35:23,359 INFO L93 Difference]: Finished difference Result 298 states and 861 transitions. [2021-11-19 14:35:23,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:35:23,361 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 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 [2021-11-19 14:35:23,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:35:23,364 INFO L225 Difference]: With dead ends: 298 [2021-11-19 14:35:23,364 INFO L226 Difference]: Without dead ends: 263 [2021-11-19 14:35:23,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-11-19 14:35:23,366 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 107 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 129 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:35:23,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 39 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 167 Invalid, 0 Unknown, 129 Unchecked, 0.6s Time] [2021-11-19 14:35:23,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-11-19 14:35:23,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 262. [2021-11-19 14:35:23,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 261 states have (on average 3.003831417624521) internal successors, (784), 261 states have internal predecessors, (784), 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) [2021-11-19 14:35:23,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 784 transitions. [2021-11-19 14:35:23,386 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 784 transitions. Word has length 24 [2021-11-19 14:35:23,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:35:23,386 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 784 transitions. [2021-11-19 14:35:23,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 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) [2021-11-19 14:35:23,387 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 784 transitions. [2021-11-19 14:35:23,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-19 14:35:23,388 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:35:23,389 INFO L514 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] [2021-11-19 14:35:23,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:35:23,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:35:23,604 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 14:35:23,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:35:23,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1749907557, now seen corresponding path program 2 times [2021-11-19 14:35:23,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:35:23,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1796254529] [2021-11-19 14:35:23,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:35:23,605 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:35:23,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:35:23,606 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:35:23,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:35:23,731 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-19 14:35:23,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:35:23,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:35:23,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:35:23,825 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 14:35:23,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:35:23,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 14:35:23,968 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:35:23,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1796254529] [2021-11-19 14:35:23,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1796254529] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:35:23,968 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:35:23,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 14:35:23,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131163913] [2021-11-19 14:35:23,969 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:35:23,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:35:23,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:35:23,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:35:23,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:35:23,970 INFO L87 Difference]: Start difference. First operand 262 states and 784 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 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) [2021-11-19 14:35:24,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:35:24,152 INFO L93 Difference]: Finished difference Result 226 states and 637 transitions. [2021-11-19 14:35:24,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:35:24,153 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 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 24 [2021-11-19 14:35:24,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:35:24,155 INFO L225 Difference]: With dead ends: 226 [2021-11-19 14:35:24,156 INFO L226 Difference]: Without dead ends: 226 [2021-11-19 14:35:24,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:35:24,157 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:35:24,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 7 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:35:24,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-11-19 14:35:24,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2021-11-19 14:35:24,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 2.831111111111111) internal successors, (637), 225 states have internal predecessors, (637), 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) [2021-11-19 14:35:24,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 637 transitions. [2021-11-19 14:35:24,172 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 637 transitions. Word has length 24 [2021-11-19 14:35:24,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:35:24,172 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 637 transitions. [2021-11-19 14:35:24,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 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) [2021-11-19 14:35:24,173 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 637 transitions. [2021-11-19 14:35:24,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-19 14:35:24,174 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:35:24,174 INFO L514 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] [2021-11-19 14:35:24,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:35:24,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:35:24,389 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 14:35:24,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:35:24,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1324572859, now seen corresponding path program 1 times [2021-11-19 14:35:24,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:35:24,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [596210730] [2021-11-19 14:35:24,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:35:24,390 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:35:24,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:35:24,391 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:35:24,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:35:24,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:35:24,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 14:35:24,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:35:24,788 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 14:35:24,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:35:25,179 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 14:35:25,180 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:35:25,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [596210730] [2021-11-19 14:35:25,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [596210730] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:35:25,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1145772769] [2021-11-19 14:35:25,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:35:25,180 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:35:25,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:35:25,182 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:35:25,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-19 14:35:25,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:35:25,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:35:25,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:35:25,483 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 14:35:25,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:35:25,705 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 14:35:25,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1145772769] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:35:25,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346699132] [2021-11-19 14:35:25,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:35:25,706 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:35:25,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:35:25,708 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:35:25,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-19 14:35:25,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:35:25,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 14:35:25,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:35:25,952 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 14:35:25,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:35:26,174 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 14:35:26,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346699132] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:35:26,174 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 14:35:26,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 11 [2021-11-19 14:35:26,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750879032] [2021-11-19 14:35:26,174 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 14:35:26,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 14:35:26,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:35:26,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 14:35:26,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:35:26,176 INFO L87 Difference]: Start difference. First operand 226 states and 637 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 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) [2021-11-19 14:35:26,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:35:26,602 INFO L93 Difference]: Finished difference Result 398 states and 1057 transitions. [2021-11-19 14:35:26,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:35:26,602 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 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 25 [2021-11-19 14:35:26,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:35:26,605 INFO L225 Difference]: With dead ends: 398 [2021-11-19 14:35:26,606 INFO L226 Difference]: Without dead ends: 354 [2021-11-19 14:35:26,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:35:26,607 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 54 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 72 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:35:26,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 40 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 172 Invalid, 0 Unknown, 72 Unchecked, 0.4s Time] [2021-11-19 14:35:26,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2021-11-19 14:35:26,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 258. [2021-11-19 14:35:26,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 257 states have (on average 2.7665369649805447) internal successors, (711), 257 states have internal predecessors, (711), 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) [2021-11-19 14:35:26,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 711 transitions. [2021-11-19 14:35:26,621 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 711 transitions. Word has length 25 [2021-11-19 14:35:26,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:35:26,621 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 711 transitions. [2021-11-19 14:35:26,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 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) [2021-11-19 14:35:26,621 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 711 transitions. [2021-11-19 14:35:26,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-19 14:35:26,623 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:35:26,623 INFO L514 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] [2021-11-19 14:35:26,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-19 14:35:26,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-19 14:35:27,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:35:27,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:35:27,232 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 14:35:27,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:35:27,232 INFO L85 PathProgramCache]: Analyzing trace with hash 2027854465, now seen corresponding path program 1 times [2021-11-19 14:35:27,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:35:27,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1271456699] [2021-11-19 14:35:27,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:35:27,233 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:35:27,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:35:27,234 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:35:27,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 14:35:27,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:35:27,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 14:35:27,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:35:27,711 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 14:35:27,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:35:28,321 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 14:35:28,321 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:35:28,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1271456699] [2021-11-19 14:35:28,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1271456699] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:35:28,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1848407407] [2021-11-19 14:35:28,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:35:28,322 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:35:28,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:35:28,323 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:35:28,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-19 14:35:28,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:35:28,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 14:35:28,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:35:28,931 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 14:35:28,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:35:29,726 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 14:35:29,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1848407407] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:35:29,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674928991] [2021-11-19 14:35:29,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:35:29,727 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:35:29,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:35:29,728 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:35:29,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-19 14:35:29,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:35:29,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-19 14:35:29,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:35:30,205 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 14:35:30,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:35:31,014 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 14:35:31,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674928991] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:35:31,014 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 14:35:31,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 7, 7, 6, 6] total 28 [2021-11-19 14:35:31,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725590045] [2021-11-19 14:35:31,015 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 14:35:31,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-19 14:35:31,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:35:31,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-19 14:35:31,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=592, Unknown=0, NotChecked=0, Total=756 [2021-11-19 14:35:31,017 INFO L87 Difference]: Start difference. First operand 258 states and 711 transitions. Second operand has 28 states, 28 states have (on average 4.285714285714286) internal successors, (120), 28 states have internal predecessors, (120), 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) [2021-11-19 14:35:33,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:35:33,599 INFO L93 Difference]: Finished difference Result 680 states and 1788 transitions. [2021-11-19 14:35:33,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 14:35:33,600 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.285714285714286) internal successors, (120), 28 states have internal predecessors, (120), 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 25 [2021-11-19 14:35:33,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:35:33,606 INFO L225 Difference]: With dead ends: 680 [2021-11-19 14:35:33,606 INFO L226 Difference]: Without dead ends: 499 [2021-11-19 14:35:33,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=304, Invalid=1028, Unknown=0, NotChecked=0, Total=1332 [2021-11-19 14:35:33,609 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 317 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 194 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:35:33,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 55 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 523 Invalid, 0 Unknown, 194 Unchecked, 1.7s Time] [2021-11-19 14:35:33,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2021-11-19 14:35:33,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 413. [2021-11-19 14:35:33,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 412 states have (on average 2.8300970873786406) internal successors, (1166), 412 states have internal predecessors, (1166), 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) [2021-11-19 14:35:33,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 1166 transitions. [2021-11-19 14:35:33,635 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 1166 transitions. Word has length 25 [2021-11-19 14:35:33,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:35:33,635 INFO L470 AbstractCegarLoop]: Abstraction has 413 states and 1166 transitions. [2021-11-19 14:35:33,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.285714285714286) internal successors, (120), 28 states have internal predecessors, (120), 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) [2021-11-19 14:35:33,636 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 1166 transitions. [2021-11-19 14:35:33,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-19 14:35:33,638 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:35:33,638 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:35:33,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 14:35:33,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-19 14:35:34,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-19 14:35:34,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:35:34,254 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 14:35:34,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:35:34,254 INFO L85 PathProgramCache]: Analyzing trace with hash -2064913805, now seen corresponding path program 2 times [2021-11-19 14:35:34,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:35:34,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [831565474] [2021-11-19 14:35:34,255 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:35:34,255 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:35:34,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:35:34,256 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:35:34,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 14:35:34,441 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:35:34,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:35:34,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 14:35:34,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:35:34,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2021-11-19 14:35:34,683 INFO L354 Elim1Store]: treesize reduction 163, result has 15.1 percent of original size [2021-11-19 14:35:34,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 43 [2021-11-19 14:39:27,938 WARN L227 SmtUtils]: Spent 3.78m on a formula simplification. DAG size of input: 375 DAG size of output: 124 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 14:39:27,940 INFO L354 Elim1Store]: treesize reduction 2076, result has 16.6 percent of original size [2021-11-19 14:39:27,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 39 case distinctions, treesize of input 121 treesize of output 457 [2021-11-19 14:42:10,681 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-11-19 14:42:10,682 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:42:10,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [831565474] [2021-11-19 14:42:10,682 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-11-19 14:42:10,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [500279231] [2021-11-19 14:42:10,683 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:42:10,683 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:42:10,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:42:10,688 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:42:10,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-11-19 14:42:10,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-19 14:42:11,561 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:42:11,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:42:11,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-19 14:42:11,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:42:11,573 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-11-19 14:42:11,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155814686] [2021-11-19 14:42:11,574 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:42:11,574 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:42:11,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:42:11,575 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:42:11,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-19 14:42:11,938 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:42:11,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:42:11,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-19 14:42:11,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:42:11,947 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-11-19 14:42:11,947 INFO L186 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:42:11,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-19 14:42:11,947 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-11-19 14:42:11,948 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2021-11-19 14:42:11,953 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2021-11-19 14:42:11,954 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2021-11-19 14:42:11,954 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2021-11-19 14:42:11,955 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2021-11-19 14:42:11,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 14:42:12,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-19 14:42:12,359 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2021-11-19 14:42:12,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d98fdd-7114-4b67-b5d9-a1b49f689d17/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 14:42:12,561 INFO L732 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1] [2021-11-19 14:42:12,564 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-19 14:42:12,564 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 14:42:12,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 02:42:12 BasicIcfg [2021-11-19 14:42:12,593 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 14:42:12,594 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 14:42:12,594 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 14:42:12,594 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 14:42:12,595 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:34:31" (3/4) ... [2021-11-19 14:42:12,598 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-19 14:42:12,598 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 14:42:12,599 INFO L158 Benchmark]: Toolchain (without parser) took 462941.89ms. Allocated memory was 69.2MB in the beginning and 121.6MB in the end (delta: 52.4MB). Free memory was 48.6MB in the beginning and 24.7MB in the end (delta: 23.9MB). Peak memory consumption was 76.6MB. Max. memory is 16.1GB. [2021-11-19 14:42:12,599 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 69.2MB. Free memory is still 49.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:42:12,600 INFO L158 Benchmark]: CACSL2BoogieTranslator took 491.46ms. Allocated memory is still 69.2MB. Free memory was 48.4MB in the beginning and 50.7MB in the end (delta: -2.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-19 14:42:12,600 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.95ms. Allocated memory is still 69.2MB. Free memory was 50.7MB in the beginning and 48.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 14:42:12,601 INFO L158 Benchmark]: Boogie Preprocessor took 82.09ms. Allocated memory is still 69.2MB. Free memory was 48.2MB in the beginning and 46.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 14:42:12,601 INFO L158 Benchmark]: RCFGBuilder took 1136.88ms. Allocated memory is still 69.2MB. Free memory was 46.1MB in the beginning and 35.5MB in the end (delta: 10.7MB). Peak memory consumption was 21.6MB. Max. memory is 16.1GB. [2021-11-19 14:42:12,602 INFO L158 Benchmark]: TraceAbstraction took 461154.11ms. Allocated memory was 69.2MB in the beginning and 121.6MB in the end (delta: 52.4MB). Free memory was 35.2MB in the beginning and 24.7MB in the end (delta: 10.5MB). Peak memory consumption was 62.4MB. Max. memory is 16.1GB. [2021-11-19 14:42:12,602 INFO L158 Benchmark]: Witness Printer took 4.43ms. Allocated memory is still 121.6MB. Free memory is still 24.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:42:12,604 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 69.2MB. Free memory is still 49.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 491.46ms. Allocated memory is still 69.2MB. Free memory was 48.4MB in the beginning and 50.7MB in the end (delta: -2.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.95ms. Allocated memory is still 69.2MB. Free memory was 50.7MB in the beginning and 48.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 82.09ms. Allocated memory is still 69.2MB. Free memory was 48.2MB in the beginning and 46.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1136.88ms. Allocated memory is still 69.2MB. Free memory was 46.1MB in the beginning and 35.5MB in the end (delta: 10.7MB). Peak memory consumption was 21.6MB. Max. memory is 16.1GB. * TraceAbstraction took 461154.11ms. Allocated memory was 69.2MB in the beginning and 121.6MB in the end (delta: 52.4MB). Free memory was 35.2MB in the beginning and 24.7MB in the end (delta: 10.5MB). Peak memory consumption was 62.4MB. Max. memory is 16.1GB. * Witness Printer took 4.43ms. Allocated memory is still 121.6MB. Free memory is still 24.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 25.1s, 196 PlacesBefore, 36 PlacesAfterwards, 204 TransitionsBefore, 32 TransitionsAfterwards, 1456 CoEnabledTransitionPairs, 8 FixpointIterations, 138 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 25 TrivialYvCompositions, 10 ConcurrentYvCompositions, 12 ChoiceCompositions, 214 TotalNumberOfCompositions, 2271 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1809, positive: 1735, positive conditional: 0, positive unconditional: 1735, negative: 74, negative conditional: 0, negative unconditional: 74, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1037, positive: 1018, positive conditional: 0, positive unconditional: 1018, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1037, positive: 1012, positive conditional: 0, positive unconditional: 1012, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 25, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 1292, positive: 421, positive conditional: 0, positive unconditional: 421, negative: 871, negative conditional: 0, negative unconditional: 871, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1809, positive: 717, positive conditional: 0, positive unconditional: 717, negative: 55, negative conditional: 0, negative unconditional: 55, unknown: 1037, unknown conditional: 0, unknown unconditional: 1037] , Statistics on independence cache: Total cache size (in pairs): 90, Positive cache size: 85, Positive conditional cache size: 0, Positive unconditional cache size: 85, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 126]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L41] 0 int *q1, *q2; [L42] 0 int q1_front, q1_back, q2_front, q2_back, s, t, n1, n2, N; [L103] 0 pthread_t t1, t2, t3; [L105] 0 N = __VERIFIER_nondet_int() [L106] 0 n1 = __VERIFIER_nondet_int() [L107] 0 n2 = __VERIFIER_nondet_int() [L108] 0 q1_front = __VERIFIER_nondet_int() [L109] 0 q1_back = q1_front [L110] 0 q2_front = __VERIFIER_nondet_int() [L111] 0 q2_back = q2_front [L112] CALL, EXPR 0 create_fresh_int_array(n1) [L132] CALL 0 assume_abort_if_not(size >= 0) [L38] COND FALSE 0 !(!cond) [L132] RET 0 assume_abort_if_not(size >= 0) [L133] CALL 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L38] COND TRUE 0 !cond [L133] RET 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L135] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L136] 0 int i = 0; [L136] COND TRUE 0 i < size [L137] 0 arr[i] = __VERIFIER_nondet_int() [L136] 0 i++ [L136] COND TRUE 0 i < size [L137] 0 arr[i] = __VERIFIER_nondet_int() [L136] 0 i++ [L136] COND FALSE 0 !(i < size) [L139] 0 return arr; [L112] RET, EXPR 0 create_fresh_int_array(n1) [L112] 0 q1 = create_fresh_int_array(n1) [L113] CALL, EXPR 0 create_fresh_int_array(n2) [L132] CALL 0 assume_abort_if_not(size >= 0) [L38] COND FALSE 0 !(!cond) [L132] RET 0 assume_abort_if_not(size >= 0) [L133] CALL 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L38] COND FALSE 0 !(!cond) [L133] RET 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L135] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L136] 0 int i = 0; [L136] COND TRUE 0 i < size [L137] 0 arr[i] = __VERIFIER_nondet_int() [L136] 0 i++ [L139] 0 return arr; [L113] RET, EXPR 0 create_fresh_int_array(n2) [L113] 0 q2 = create_fresh_int_array(n2) [L115] CALL 0 assume_abort_if_not(N >= 0) [L38] COND FALSE 0 !(!cond) [L115] RET 0 assume_abort_if_not(N >= 0) [L118] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) [L47] 1 int i=0; [L47] COND TRUE 1 i= 0 && q1_back < n1) [L38] COND FALSE 1 !(!cond) [L49] RET 1 assume_abort_if_not(q1_back >= 0 && q1_back < n1) [L50] EXPR 1 q1[q1_back] [L50] CALL 1 assume_abort_if_not(q1[q1_back] == 1) [L38] COND FALSE 1 !(!cond) [L50] RET 1 assume_abort_if_not(q1[q1_back] == 1) [L51] 1 q1_back++ [L47] 1 i++ [L47] COND FALSE 1 !(i= 0 && q1_back < n1) [L38] COND TRUE 1 !cond [L55] RET 1 assume_abort_if_not(q1_back >= 0 && q1_back < n1) [L56] EXPR 1 q1[q1_back] [L56] CALL 1 assume_abort_if_not(q1[q1_back] == 0) [L38] COND TRUE 1 !cond [L56] RET 1 assume_abort_if_not(q1[q1_back] == 0) [L57] 1 q1_back++ [L60] 1 return 0; [L119] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) [L120] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) [L121] 0 \read(t1) [L121] FCALL, JOIN 1 pthread_join(t1, 0) [L86] 3 int k; [L64] 2 int j; [L65] COND TRUE 2 1 [L67] CALL 2 assume_abort_if_not(q1_back > q1_front && q1_front >= 0 && q1_front < n1) [L38] COND FALSE 2 !(!cond) [L67] RET 2 assume_abort_if_not(q1_back > q1_front && q1_front >= 0 && q1_front < n1) [L68] EXPR 2 q1[q1_front] [L68] 2 j = q1[q1_front] [L69] 2 q1_front++ [L122] 0 \read(t2) [L72] CALL 2 assume_abort_if_not(q2_back >= 0 && q2_back < n2) [L38] COND FALSE 2 !(!cond) [L72] RET 2 assume_abort_if_not(q2_back >= 0 && q2_back < n2) [L73] EXPR 2 q2[q2_back] [L73] CALL 2 assume_abort_if_not(q2[q2_back] == j) [L38] COND TRUE 2 !cond [L73] RET 2 assume_abort_if_not(q2[q2_back] == j) [L74] 2 q2_back++ [L76] 2 s = s + j [L77] COND TRUE 2 j == 0 [L82] 2 return 0; [L122] FCALL, JOIN 2 pthread_join(t2, 0) [L123] 0 \read(t3) [L87] COND TRUE 3 1 [L89] CALL 3 assume_abort_if_not(q2_back > q2_front && q2_front >= 0 && q2_front < n2) [L38] COND TRUE 3 !cond [L89] RET 3 assume_abort_if_not(q2_back > q2_front && q2_front >= 0 && q2_front < n2) [L90] EXPR 3 q2[q2_front] [L90] 3 k = q2[q2_front] [L91] 3 q2_front++ [L93] 3 t = t + k [L94] COND TRUE 3 k == 0 [L99] 3 return 0; [L123] FCALL, JOIN 3 pthread_join(t3, 0) [L125] CALL 0 assume_abort_if_not(t != N) [L38] COND TRUE 0 !cond [L125] RET 0 assume_abort_if_not(t != N) [L126] 0 reach_error() - UnprovableResult [Line: 118]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 119]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 120]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 217 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 460.9s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 25.2s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 541 SdHoareTripleChecker+Valid, 3.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 541 mSDsluCounter, 166 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 395 IncrementalHoareTripleChecker+Unchecked, 1013 mSDsCounter, 73 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1121 IncrementalHoareTripleChecker+Invalid, 1589 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 73 mSolverCounterUnsat, 32 mSDtfsCounter, 1121 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 563 GetRequests, 491 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=413occurred in iteration=8, InterpolantAutomatonStates: 44, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 183 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 424.2s InterpolantComputationTime, 312 NumberOfCodeBlocks, 310 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 548 ConstructedInterpolants, 62 QuantifiedInterpolants, 4993 SizeOfPredicates, 79 NumberOfNonLiveVariables, 1780 ConjunctsInSsa, 121 ConjunctsInUnsatCore, 24 InterpolantComputations, 12 PerfectInterpolantSequences, 28/46 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN