./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.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_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/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_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/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_d4f9073f-3d38-4166-bfd6-d8b478e152e6/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 6727abf6d3311127e7c3f388ca276994a5a41bcb1f2faca3217c66ebe13b8b8f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:56:02,522 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:56:02,524 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:56:02,582 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:56:02,584 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:56:02,589 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:56:02,591 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:56:02,595 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:56:02,598 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:56:02,604 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:56:02,605 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:56:02,607 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:56:02,608 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:56:02,610 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:56:02,613 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:56:02,618 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:56:02,620 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:56:02,621 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:56:02,624 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:56:02,632 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:56:02,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:56:02,636 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:56:02,640 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:56:02,641 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:56:02,645 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:56:02,645 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:56:02,646 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:56:02,648 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:56:02,648 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:56:02,650 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:56:02,651 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:56:02,652 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:56:02,654 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:56:02,655 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:56:02,657 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:56:02,657 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:56:02,658 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:56:02,658 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:56:02,658 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:56:02,659 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:56:02,660 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:56:02,661 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 14:56:02,709 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:56:02,709 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:56:02,711 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:56:02,711 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:56:02,711 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:56:02,712 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:56:02,712 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:56:02,712 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:56:02,712 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:56:02,713 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:56:02,714 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:56:02,714 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:56:02,714 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:56:02,714 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:56:02,715 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:56:02,715 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:56:02,716 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:56:02,716 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:56:02,716 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:56:02,716 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:56:02,717 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:56:02,717 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:56:02,717 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:56:02,717 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:56:02,718 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:56:02,718 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:56:02,718 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:56:02,718 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:56:02,719 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:56:02,720 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:56:02,721 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:56:02,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:56:02,721 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:56:02,721 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:56:02,722 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:56:02,722 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:56:02,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:56:02,722 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:56:02,723 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:56:02,723 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:56:02,723 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_d4f9073f-3d38-4166-bfd6-d8b478e152e6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6727abf6d3311127e7c3f388ca276994a5a41bcb1f2faca3217c66ebe13b8b8f [2021-11-19 14:56:03,032 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:56:03,056 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:56:03,059 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:56:03,060 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:56:03,061 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:56:03,063 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c [2021-11-19 14:56:03,129 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/data/a89604ff2/3ec580a784144be5a40b1148e3f94c7a/FLAG98e490a15 [2021-11-19 14:56:03,686 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:56:03,686 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c [2021-11-19 14:56:03,697 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/data/a89604ff2/3ec580a784144be5a40b1148e3f94c7a/FLAG98e490a15 [2021-11-19 14:56:04,017 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/data/a89604ff2/3ec580a784144be5a40b1148e3f94c7a [2021-11-19 14:56:04,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:56:04,023 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:56:04,028 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:56:04,029 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:56:04,032 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:56:04,037 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:56:04" (1/1) ... [2021-11-19 14:56:04,038 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f0e2d91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:56:04, skipping insertion in model container [2021-11-19 14:56:04,039 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:56:04" (1/1) ... [2021-11-19 14:56:04,046 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:56:04,069 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:56:04,287 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_d4f9073f-3d38-4166-bfd6-d8b478e152e6/sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c[2412,2425] [2021-11-19 14:56:04,298 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:56:04,308 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 14:56:04,309 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@72665429 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:56:04, skipping insertion in model container [2021-11-19 14:56:04,309 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:56:04,309 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:56:04,312 INFO L158 Benchmark]: Toolchain (without parser) took 287.32ms. Allocated memory is still 111.1MB. Free memory was 81.0MB in the beginning and 86.6MB in the end (delta: -5.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 14:56:04,312 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 111.1MB. Free memory is still 63.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:56:04,313 INFO L158 Benchmark]: CACSL2BoogieTranslator took 281.69ms. Allocated memory is still 111.1MB. Free memory was 80.7MB in the beginning and 86.6MB in the end (delta: -5.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 14:56:04,316 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 111.1MB. Free memory is still 63.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 281.69ms. Allocated memory is still 111.1MB. Free memory was 80.7MB in the beginning and 86.6MB in the end (delta: -5.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 100]: 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_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/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_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/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_d4f9073f-3d38-4166-bfd6-d8b478e152e6/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 6727abf6d3311127e7c3f388ca276994a5a41bcb1f2faca3217c66ebe13b8b8f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:56:06,643 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:56:06,646 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:56:06,703 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:56:06,703 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:56:06,708 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:56:06,711 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:56:06,716 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:56:06,720 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:56:06,731 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:56:06,732 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:56:06,735 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:56:06,735 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:56:06,738 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:56:06,740 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:56:06,746 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:56:06,747 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:56:06,749 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:56:06,751 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:56:06,758 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:56:06,760 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:56:06,762 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:56:06,764 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:56:06,767 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:56:06,774 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:56:06,774 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:56:06,775 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:56:06,777 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:56:06,778 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:56:06,779 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:56:06,780 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:56:06,781 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:56:06,783 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:56:06,784 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:56:06,785 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:56:06,786 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:56:06,787 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:56:06,787 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:56:06,787 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:56:06,789 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:56:06,790 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:56:06,795 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-19 14:56:06,841 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:56:06,841 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:56:06,843 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:56:06,843 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:56:06,843 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:56:06,844 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:56:06,844 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:56:06,844 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:56:06,844 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:56:06,845 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:56:06,847 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:56:06,848 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:56:06,848 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:56:06,848 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:56:06,848 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:56:06,849 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:56:06,849 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:56:06,849 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:56:06,849 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:56:06,850 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:56:06,850 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:56:06,850 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:56:06,850 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:56:06,851 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:56:06,851 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:56:06,851 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:56:06,852 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:56:06,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:56:06,852 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:56:06,852 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:56:06,853 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:56:06,853 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:56:06,853 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:56:06,853 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:56:06,854 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:56:06,854 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:56:06,854 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_d4f9073f-3d38-4166-bfd6-d8b478e152e6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6727abf6d3311127e7c3f388ca276994a5a41bcb1f2faca3217c66ebe13b8b8f [2021-11-19 14:56:07,254 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:56:07,276 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:56:07,279 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:56:07,280 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:56:07,281 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:56:07,282 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c [2021-11-19 14:56:07,365 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/data/7dad9bb16/0b5f43669b3549a9a1201aa18ee908c9/FLAG1f5d794d9 [2021-11-19 14:56:07,943 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:56:07,944 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c [2021-11-19 14:56:07,955 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/data/7dad9bb16/0b5f43669b3549a9a1201aa18ee908c9/FLAG1f5d794d9 [2021-11-19 14:56:08,253 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/data/7dad9bb16/0b5f43669b3549a9a1201aa18ee908c9 [2021-11-19 14:56:08,257 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:56:08,259 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:56:08,261 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:56:08,262 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:56:08,265 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:56:08,266 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:56:08" (1/1) ... [2021-11-19 14:56:08,269 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a62c0e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:56:08, skipping insertion in model container [2021-11-19 14:56:08,270 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:56:08" (1/1) ... [2021-11-19 14:56:08,279 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:56:08,310 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:56:08,485 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_d4f9073f-3d38-4166-bfd6-d8b478e152e6/sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c[2412,2425] [2021-11-19 14:56:08,500 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:56:08,530 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:56:08,550 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:56:08,604 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_d4f9073f-3d38-4166-bfd6-d8b478e152e6/sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c[2412,2425] [2021-11-19 14:56:08,611 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:56:08,621 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:56:08,643 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_d4f9073f-3d38-4166-bfd6-d8b478e152e6/sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c[2412,2425] [2021-11-19 14:56:08,649 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:56:08,666 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:56:08,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:56:08 WrapperNode [2021-11-19 14:56:08,667 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:56:08,668 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:56:08,669 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:56:08,669 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:56:08,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:56:08" (1/1) ... [2021-11-19 14:56:08,689 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:56:08" (1/1) ... [2021-11-19 14:56:08,732 INFO L137 Inliner]: procedures = 28, calls = 45, calls flagged for inlining = 15, calls inlined = 27, statements flattened = 262 [2021-11-19 14:56:08,732 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:56:08,733 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:56:08,733 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:56:08,734 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:56:08,744 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:56:08" (1/1) ... [2021-11-19 14:56:08,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:56:08" (1/1) ... [2021-11-19 14:56:08,751 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:56:08" (1/1) ... [2021-11-19 14:56:08,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:56:08" (1/1) ... [2021-11-19 14:56:08,767 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:56:08" (1/1) ... [2021-11-19 14:56:08,775 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:56:08" (1/1) ... [2021-11-19 14:56:08,779 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:56:08" (1/1) ... [2021-11-19 14:56:08,785 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:56:08,786 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:56:08,786 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:56:08,786 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:56:08,787 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:56:08" (1/1) ... [2021-11-19 14:56:08,795 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:56:08,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:56:08,840 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:56:08,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:56:08,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:56:08,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:56:08,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:56:08,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 14:56:08,888 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-19 14:56:08,889 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-19 14:56:08,889 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-19 14:56:08,889 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-19 14:56:08,889 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-19 14:56:08,890 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-19 14:56:08,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:56:08,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:56:08,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:56:08,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:56:08,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 14:56:08,893 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 14:56:09,033 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:56:09,035 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:56:09,711 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:56:09,727 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:56:09,727 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-19 14:56:09,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:56:09 BoogieIcfgContainer [2021-11-19 14:56:09,730 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:56:09,732 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:56:09,732 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:56:09,735 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:56:09,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:56:08" (1/3) ... [2021-11-19 14:56:09,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47c06c87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:56:09, skipping insertion in model container [2021-11-19 14:56:09,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:56:08" (2/3) ... [2021-11-19 14:56:09,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47c06c87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:56:09, skipping insertion in model container [2021-11-19 14:56:09,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:56:09" (3/3) ... [2021-11-19 14:56:09,755 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-bad-three-array-sum-alt.wvr.c [2021-11-19 14:56:09,761 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-19 14:56:09,761 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:56:09,761 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 14:56:09,761 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-19 14:56:09,851 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,852 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,852 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,852 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,853 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,853 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,853 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,853 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,854 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,854 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,854 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,855 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,856 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,856 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,856 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,857 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,858 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,858 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,858 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,859 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,859 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,859 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,859 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,860 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,860 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,860 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,860 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,861 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,861 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,861 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,861 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,861 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,862 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,862 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,863 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,863 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,863 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,864 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,864 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,864 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,872 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,872 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,872 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,873 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,873 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,873 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,873 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,874 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,874 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,875 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,875 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,875 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,876 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,877 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,877 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,877 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,878 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,878 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,878 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,878 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,878 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,879 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,879 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,880 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,880 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,880 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,881 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,881 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,882 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,882 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,882 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,883 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,883 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,884 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,887 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,887 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,888 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,888 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,889 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,891 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,891 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,891 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,892 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,896 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,897 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,897 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,897 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,897 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,897 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,898 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,898 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,898 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,899 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,899 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,900 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,900 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,900 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,900 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,900 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,901 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,901 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,901 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,901 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,902 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,902 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,902 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,903 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,903 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,903 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,903 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,903 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,904 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,904 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,904 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,904 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,904 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,905 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,905 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,905 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,905 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,906 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,906 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,906 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,906 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,906 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,907 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,907 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,907 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,907 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,908 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,908 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,908 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,908 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,909 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,909 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,909 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,909 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,909 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,910 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,910 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,910 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,910 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,911 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,911 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,911 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,911 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,912 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,912 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,912 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,912 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,913 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,913 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,913 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,913 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,914 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,914 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,914 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,914 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,915 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,915 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,915 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,915 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,915 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,916 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,916 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,916 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,916 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,917 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,917 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,917 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,917 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,917 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,918 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,918 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,918 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,918 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,919 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,919 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,919 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,919 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,919 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,920 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,920 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,920 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,921 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,922 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,944 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,944 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,944 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,944 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,945 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,945 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,945 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,945 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,946 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,946 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,946 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,946 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,947 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,947 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,947 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,947 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,948 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,948 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,948 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,948 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,948 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,948 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,949 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,949 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,949 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,949 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,949 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,950 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,950 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,950 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,950 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,950 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,950 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,951 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,951 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,951 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,951 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,951 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,952 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,952 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,952 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,952 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,952 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,953 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,953 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,953 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,953 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,953 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,954 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,954 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,954 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,954 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,954 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,954 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,955 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,955 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,955 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,955 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,955 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,956 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,956 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,956 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,956 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,956 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,957 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,957 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,957 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,957 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,957 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,958 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,958 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,958 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,958 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,958 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,959 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,959 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,959 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,959 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,959 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,960 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,960 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,960 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,960 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,960 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,961 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,961 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,961 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,961 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,961 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,962 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,962 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,962 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,962 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,963 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,963 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,963 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,963 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,963 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,964 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,964 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,964 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,964 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,964 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,964 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,965 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,965 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,965 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,965 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,965 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,966 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,966 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,966 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,966 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,966 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,966 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,967 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,967 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,967 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,967 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,967 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,968 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,968 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,968 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,968 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,968 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,968 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,969 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,969 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,969 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,969 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,970 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,970 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,970 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,970 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,970 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,970 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,971 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,971 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,971 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,971 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,971 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,972 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,972 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,972 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,972 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,972 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,973 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,973 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,973 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,973 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,973 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,973 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,974 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,974 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,975 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,975 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,975 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,975 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,976 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,976 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,976 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,976 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,976 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,977 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,977 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,977 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,977 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,977 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,977 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,978 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,978 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,978 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,981 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,982 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,982 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,982 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,982 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,982 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,983 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,983 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,983 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,983 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,984 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,984 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,984 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,984 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,984 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,985 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,988 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,988 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,988 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,989 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,989 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,989 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,989 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,989 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,990 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,990 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,990 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,990 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,990 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,991 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,992 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,992 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,992 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,992 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,992 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,993 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,993 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,993 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,993 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,994 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,994 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,994 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:56:09,996 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-11-19 14:56:10,047 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:56:10,055 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 14:56:10,055 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-19 14:56:10,078 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-19 14:56:10,094 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 340 places, 359 transitions, 742 flow [2021-11-19 14:56:10,098 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 340 places, 359 transitions, 742 flow [2021-11-19 14:56:10,100 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 340 places, 359 transitions, 742 flow [2021-11-19 14:56:10,274 INFO L129 PetriNetUnfolder]: 29/356 cut-off events. [2021-11-19 14:56:10,275 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-11-19 14:56:10,283 INFO L84 FinitePrefix]: Finished finitePrefix Result has 369 conditions, 356 events. 29/356 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 493 event pairs, 0 based on Foata normal form. 0/326 useless extension candidates. Maximal degree in co-relation 233. Up to 2 conditions per place. [2021-11-19 14:56:10,301 INFO L116 LiptonReduction]: Number of co-enabled transitions 16670 [2021-11-19 14:56:46,960 WARN L227 SmtUtils]: Spent 8.24s on a formula simplification. DAG size of input: 163 DAG size of output: 159 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-19 14:57:01,915 INFO L131 LiptonReduction]: Checked pairs total: 15197 [2021-11-19 14:57:01,915 INFO L133 LiptonReduction]: Total number of compositions: 418 [2021-11-19 14:57:01,925 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 32 transitions, 88 flow [2021-11-19 14:57:01,967 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 109 states, 108 states have (on average 3.064814814814815) internal successors, (331), 108 states have internal predecessors, (331), 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 14:57:01,971 INFO L276 IsEmpty]: Start isEmpty. Operand has 109 states, 108 states have (on average 3.064814814814815) internal successors, (331), 108 states have internal predecessors, (331), 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 14:57:01,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-19 14:57:01,987 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:57:01,988 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 14:57:01,989 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 14:57:01,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:57:01,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1368061577, now seen corresponding path program 1 times [2021-11-19 14:57:02,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:57:02,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1807991260] [2021-11-19 14:57:02,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:57:02,016 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:57:02,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:57:02,020 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:57:02,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:57:02,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:57:02,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 14:57:02,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:57:02,657 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 14:57:02,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:57:02,874 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 14:57:02,875 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:57:02,875 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1807991260] [2021-11-19 14:57:02,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1807991260] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:57:02,876 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:57:02,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-11-19 14:57:02,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401359195] [2021-11-19 14:57:02,879 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:57:02,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:57:02,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:57:02,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:57:02,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:57:02,927 INFO L87 Difference]: Start difference. First operand has 109 states, 108 states have (on average 3.064814814814815) internal successors, (331), 108 states have internal predecessors, (331), 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 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 14:57:03,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:57:03,274 INFO L93 Difference]: Finished difference Result 206 states and 636 transitions. [2021-11-19 14:57:03,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:57:03,278 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 14:57:03,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:57:03,294 INFO L225 Difference]: With dead ends: 206 [2021-11-19 14:57:03,294 INFO L226 Difference]: Without dead ends: 199 [2021-11-19 14:57:03,295 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 14:57:03,299 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 6 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:57:03,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 6 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:57:03,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-11-19 14:57:03,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2021-11-19 14:57:03,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 3.121212121212121) internal successors, (618), 198 states have internal predecessors, (618), 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 14:57:03,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 618 transitions. [2021-11-19 14:57:03,369 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 618 transitions. Word has length 22 [2021-11-19 14:57:03,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:57:03,373 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 618 transitions. [2021-11-19 14:57:03,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 14:57:03,374 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 618 transitions. [2021-11-19 14:57:03,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-19 14:57:03,377 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:57:03,377 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 14:57:03,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:57:03,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:57:03,579 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 14:57:03,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:57:03,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1933312860, now seen corresponding path program 1 times [2021-11-19 14:57:03,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:57:03,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1135317145] [2021-11-19 14:57:03,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:57:03,581 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:57:03,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:57:03,582 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:57:03,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:57:03,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:57:03,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:57:03,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:57:03,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:03,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:57:04,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:04,078 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:57:04,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1135317145] [2021-11-19 14:57:04,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1135317145] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:57:04,078 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:57:04,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-19 14:57:04,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377079028] [2021-11-19 14:57:04,080 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:57:04,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:57:04,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:57:04,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:57:04,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:57:04,084 INFO L87 Difference]: Start difference. First operand 199 states and 618 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:57:05,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:57:05,784 INFO L93 Difference]: Finished difference Result 299 states and 879 transitions. [2021-11-19 14:57:05,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:57:05,786 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-19 14:57:05,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:57:05,790 INFO L225 Difference]: With dead ends: 299 [2021-11-19 14:57:05,790 INFO L226 Difference]: Without dead ends: 295 [2021-11-19 14:57:05,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=113, Unknown=0, NotChecked=0, Total=182 [2021-11-19 14:57:05,792 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 115 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:57:05,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 29 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-19 14:57:05,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-11-19 14:57:05,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 215. [2021-11-19 14:57:05,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 3.0981308411214954) internal successors, (663), 214 states have internal predecessors, (663), 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 14:57:05,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 663 transitions. [2021-11-19 14:57:05,834 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 663 transitions. Word has length 23 [2021-11-19 14:57:05,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:57:05,834 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 663 transitions. [2021-11-19 14:57:05,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:57:05,835 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 663 transitions. [2021-11-19 14:57:05,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-19 14:57:05,838 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:57:05,838 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 14:57:05,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:57:06,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:57:06,039 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 14:57:06,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:57:06,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1423210842, now seen corresponding path program 1 times [2021-11-19 14:57:06,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:57:06,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1208213259] [2021-11-19 14:57:06,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:57:06,040 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:57:06,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:57:06,042 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:57:06,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:57:06,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:57:06,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:57:06,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:57:06,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:06,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:57:06,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:06,538 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:57:06,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1208213259] [2021-11-19 14:57:06,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1208213259] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:57:06,539 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:57:06,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-19 14:57:06,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513963214] [2021-11-19 14:57:06,540 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:57:06,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:57:06,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:57:06,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:57:06,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:57:06,541 INFO L87 Difference]: Start difference. First operand 215 states and 663 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 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 14:57:07,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:57:07,888 INFO L93 Difference]: Finished difference Result 299 states and 872 transitions. [2021-11-19 14:57:07,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:57:07,890 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 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 14:57:07,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:57:07,893 INFO L225 Difference]: With dead ends: 299 [2021-11-19 14:57:07,894 INFO L226 Difference]: Without dead ends: 273 [2021-11-19 14:57:07,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=113, Unknown=0, NotChecked=0, Total=182 [2021-11-19 14:57:07,895 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 80 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:57:07,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 38 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-19 14:57:07,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-11-19 14:57:07,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 231. [2021-11-19 14:57:07,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 3.082608695652174) internal successors, (709), 230 states have internal predecessors, (709), 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 14:57:07,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 709 transitions. [2021-11-19 14:57:07,943 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 709 transitions. Word has length 23 [2021-11-19 14:57:07,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:57:07,948 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 709 transitions. [2021-11-19 14:57:07,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 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 14:57:07,948 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 709 transitions. [2021-11-19 14:57:07,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-19 14:57:07,950 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:57:07,950 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 14:57:07,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:57:08,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:57:08,164 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 14:57:08,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:57:08,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1069297876, now seen corresponding path program 2 times [2021-11-19 14:57:08,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:57:08,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1275632344] [2021-11-19 14:57:08,167 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:57:08,167 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:57:08,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:57:08,168 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:57:08,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:57:08,406 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:57:08,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:57:08,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:57:08,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:57:08,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:08,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:57:08,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:08,722 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:57:08,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1275632344] [2021-11-19 14:57:08,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1275632344] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:57:08,722 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:57:08,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-19 14:57:08,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617936172] [2021-11-19 14:57:08,723 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:57:08,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:57:08,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:57:08,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:57:08,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:57:08,724 INFO L87 Difference]: Start difference. First operand 231 states and 709 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:57:11,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:57:11,101 INFO L93 Difference]: Finished difference Result 347 states and 1041 transitions. [2021-11-19 14:57:11,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:57:11,102 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-19 14:57:11,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:57:11,106 INFO L225 Difference]: With dead ends: 347 [2021-11-19 14:57:11,106 INFO L226 Difference]: Without dead ends: 335 [2021-11-19 14:57:11,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:57:11,108 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 129 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:57:11,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 27 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-19 14:57:11,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2021-11-19 14:57:11,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 275. [2021-11-19 14:57:11,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 274 states have (on average 3.156934306569343) internal successors, (865), 274 states have internal predecessors, (865), 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 14:57:11,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 865 transitions. [2021-11-19 14:57:11,128 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 865 transitions. Word has length 23 [2021-11-19 14:57:11,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:57:11,129 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 865 transitions. [2021-11-19 14:57:11,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:57:11,129 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 865 transitions. [2021-11-19 14:57:11,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-19 14:57:11,131 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:57:11,131 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 14:57:11,160 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-19 14:57:11,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:57:11,345 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 14:57:11,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:57:11,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1696637180, now seen corresponding path program 3 times [2021-11-19 14:57:11,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:57:11,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1992494551] [2021-11-19 14:57:11,353 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 14:57:11,353 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:57:11,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:57:11,354 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:57:11,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:57:11,549 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-19 14:57:11,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:57:11,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 14:57:11,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:57:11,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:11,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:57:11,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:11,958 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:57:11,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1992494551] [2021-11-19 14:57:11,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1992494551] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:57:11,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1839092255] [2021-11-19 14:57:11,959 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 14:57:11,959 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:57:11,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:57:11,969 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:57:11,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-19 14:57:12,356 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-19 14:57:12,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:57:12,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:57:12,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:57:12,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:12,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:57:12,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:12,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1839092255] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:57:12,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 14:57:12,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6, 5] total 14 [2021-11-19 14:57:12,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032964100] [2021-11-19 14:57:12,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:57:12,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:57:12,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:57:12,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:57:12,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-11-19 14:57:12,638 INFO L87 Difference]: Start difference. First operand 275 states and 865 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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 14:57:13,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:57:13,780 INFO L93 Difference]: Finished difference Result 375 states and 1161 transitions. [2021-11-19 14:57:13,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:57:13,782 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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 14:57:13,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:57:13,786 INFO L225 Difference]: With dead ends: 375 [2021-11-19 14:57:13,786 INFO L226 Difference]: Without dead ends: 349 [2021-11-19 14:57:13,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-11-19 14:57:13,788 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 43 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:57:13,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 17 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-19 14:57:13,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2021-11-19 14:57:13,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 295. [2021-11-19 14:57:13,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 294 states have (on average 3.193877551020408) internal successors, (939), 294 states have internal predecessors, (939), 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 14:57:13,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 939 transitions. [2021-11-19 14:57:13,808 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 939 transitions. Word has length 23 [2021-11-19 14:57:13,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:57:13,809 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 939 transitions. [2021-11-19 14:57:13,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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 14:57:13,809 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 939 transitions. [2021-11-19 14:57:13,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-19 14:57:13,811 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:57:13,812 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 14:57:13,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:57:14,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:57:14,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 14:57:14,226 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 14:57:14,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:57:14,227 INFO L85 PathProgramCache]: Analyzing trace with hash 889814042, now seen corresponding path program 2 times [2021-11-19 14:57:14,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:57:14,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [450204430] [2021-11-19 14:57:14,228 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:57:14,228 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:57:14,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:57:14,228 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:57:14,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:57:14,479 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:57:14,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:57:14,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:57:14,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:57:14,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:14,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:57:14,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:14,745 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:57:14,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [450204430] [2021-11-19 14:57:14,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [450204430] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:57:14,746 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:57:14,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-19 14:57:14,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752221673] [2021-11-19 14:57:14,746 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:57:14,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:57:14,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:57:14,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:57:14,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:57:14,748 INFO L87 Difference]: Start difference. First operand 295 states and 939 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 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 14:57:16,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:57:16,156 INFO L93 Difference]: Finished difference Result 397 states and 1191 transitions. [2021-11-19 14:57:16,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:57:16,158 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 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 14:57:16,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:57:16,186 INFO L225 Difference]: With dead ends: 397 [2021-11-19 14:57:16,187 INFO L226 Difference]: Without dead ends: 381 [2021-11-19 14:57:16,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=113, Unknown=0, NotChecked=0, Total=182 [2021-11-19 14:57:16,188 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 122 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:57:16,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 34 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-19 14:57:16,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2021-11-19 14:57:16,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 301. [2021-11-19 14:57:16,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 300 states have (on average 3.21) internal successors, (963), 300 states have internal predecessors, (963), 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 14:57:16,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 963 transitions. [2021-11-19 14:57:16,209 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 963 transitions. Word has length 23 [2021-11-19 14:57:16,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:57:16,209 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 963 transitions. [2021-11-19 14:57:16,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 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 14:57:16,210 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 963 transitions. [2021-11-19 14:57:16,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-19 14:57:16,211 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:57:16,211 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 14:57:16,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:57:16,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:57:16,426 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 14:57:16,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:57:16,426 INFO L85 PathProgramCache]: Analyzing trace with hash 335699954, now seen corresponding path program 1 times [2021-11-19 14:57:16,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:57:16,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1240100746] [2021-11-19 14:57:16,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:57:16,427 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:57:16,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:57:16,428 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:57:16,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 14:57:16,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:57:16,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 14:57:16,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:57:16,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:16,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:57:17,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:17,034 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:57:17,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1240100746] [2021-11-19 14:57:17,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1240100746] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:57:17,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:57:17,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2021-11-19 14:57:17,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83941466] [2021-11-19 14:57:17,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:57:17,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:57:17,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:57:17,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:57:17,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:57:17,037 INFO L87 Difference]: Start difference. First operand 301 states and 963 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 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 14:57:17,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:57:17,887 INFO L93 Difference]: Finished difference Result 539 states and 1634 transitions. [2021-11-19 14:57:17,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:57:17,889 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 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 14:57:17,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:57:17,895 INFO L225 Difference]: With dead ends: 539 [2021-11-19 14:57:17,896 INFO L226 Difference]: Without dead ends: 509 [2021-11-19 14:57:17,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:57:17,897 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 48 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:57:17,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 13 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 14:57:17,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2021-11-19 14:57:17,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 417. [2021-11-19 14:57:17,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 416 states have (on average 3.1875) internal successors, (1326), 416 states have internal predecessors, (1326), 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 14:57:17,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 1326 transitions. [2021-11-19 14:57:17,925 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 1326 transitions. Word has length 23 [2021-11-19 14:57:17,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:57:17,926 INFO L470 AbstractCegarLoop]: Abstraction has 417 states and 1326 transitions. [2021-11-19 14:57:17,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 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 14:57:17,926 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 1326 transitions. [2021-11-19 14:57:17,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-19 14:57:17,929 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:57:17,929 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 14:57:17,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 14:57:18,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:57:18,136 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 14:57:18,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:57:18,137 INFO L85 PathProgramCache]: Analyzing trace with hash -2021491190, now seen corresponding path program 3 times [2021-11-19 14:57:18,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:57:18,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [150456831] [2021-11-19 14:57:18,137 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 14:57:18,137 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:57:18,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:57:18,140 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:57:18,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 14:57:18,355 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-19 14:57:18,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:57:18,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 14:57:18,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:57:18,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:18,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:57:18,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:18,878 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:57:18,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [150456831] [2021-11-19 14:57:18,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [150456831] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:57:18,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2124009977] [2021-11-19 14:57:18,879 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 14:57:18,879 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:57:18,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:57:18,883 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:57:18,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-19 14:57:19,285 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-19 14:57:19,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:57:19,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:57:19,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:57:19,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:19,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:57:19,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:19,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2124009977] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:57:19,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 14:57:19,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6, 5] total 14 [2021-11-19 14:57:19,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157798916] [2021-11-19 14:57:19,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:57:19,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:57:19,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:57:19,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:57:19,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-11-19 14:57:19,586 INFO L87 Difference]: Start difference. First operand 417 states and 1326 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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 14:57:20,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:57:20,890 INFO L93 Difference]: Finished difference Result 745 states and 2287 transitions. [2021-11-19 14:57:20,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:57:20,893 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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 14:57:20,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:57:20,901 INFO L225 Difference]: With dead ends: 745 [2021-11-19 14:57:20,901 INFO L226 Difference]: Without dead ends: 741 [2021-11-19 14:57:20,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2021-11-19 14:57:20,902 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 52 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:57:20,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 16 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-19 14:57:20,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2021-11-19 14:57:20,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 457. [2021-11-19 14:57:20,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 456 states have (on average 3.307017543859649) internal successors, (1508), 456 states have internal predecessors, (1508), 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 14:57:20,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 1508 transitions. [2021-11-19 14:57:20,933 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 1508 transitions. Word has length 23 [2021-11-19 14:57:20,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:57:20,933 INFO L470 AbstractCegarLoop]: Abstraction has 457 states and 1508 transitions. [2021-11-19 14:57:20,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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 14:57:20,934 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 1508 transitions. [2021-11-19 14:57:20,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-19 14:57:20,936 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:57:20,936 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 14:57:20,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 14:57:21,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-19 14:57:21,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 14:57:21,350 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 14:57:21,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:57:21,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1023647786, now seen corresponding path program 4 times [2021-11-19 14:57:21,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:57:21,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2136039011] [2021-11-19 14:57:21,352 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 14:57:21,352 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:57:21,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:57:21,353 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:57:21,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 14:57:21,525 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 14:57:21,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:57:21,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:57:21,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:57:21,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:21,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:57:21,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:21,886 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:57:21,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2136039011] [2021-11-19 14:57:21,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2136039011] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:57:21,886 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:57:21,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-19 14:57:21,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555183519] [2021-11-19 14:57:21,887 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:57:21,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:57:21,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:57:21,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:57:21,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:57:21,888 INFO L87 Difference]: Start difference. First operand 457 states and 1508 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 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 14:57:23,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:57:23,149 INFO L93 Difference]: Finished difference Result 673 states and 2208 transitions. [2021-11-19 14:57:23,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:57:23,152 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 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 14:57:23,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:57:23,159 INFO L225 Difference]: With dead ends: 673 [2021-11-19 14:57:23,159 INFO L226 Difference]: Without dead ends: 655 [2021-11-19 14:57:23,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:57:23,162 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 145 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:57:23,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 19 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-19 14:57:23,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2021-11-19 14:57:23,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 525. [2021-11-19 14:57:23,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 524 states have (on average 3.433206106870229) internal successors, (1799), 524 states have internal predecessors, (1799), 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 14:57:23,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 1799 transitions. [2021-11-19 14:57:23,196 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 1799 transitions. Word has length 23 [2021-11-19 14:57:23,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:57:23,196 INFO L470 AbstractCegarLoop]: Abstraction has 525 states and 1799 transitions. [2021-11-19 14:57:23,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 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 14:57:23,197 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 1799 transitions. [2021-11-19 14:57:23,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-19 14:57:23,200 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:57:23,200 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 14:57:23,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 14:57:23,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:57:23,414 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 14:57:23,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:57:23,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1670762388, now seen corresponding path program 4 times [2021-11-19 14:57:23,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:57:23,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [267430814] [2021-11-19 14:57:23,415 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 14:57:23,415 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:57:23,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:57:23,417 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:57:23,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 14:57:23,512 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 14:57:23,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:57:23,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:57:23,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:57:23,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:23,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:57:23,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:23,791 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:57:23,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [267430814] [2021-11-19 14:57:23,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [267430814] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:57:23,791 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:57:23,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-19 14:57:23,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269954291] [2021-11-19 14:57:23,791 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:57:23,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:57:23,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:57:23,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:57:23,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:57:23,793 INFO L87 Difference]: Start difference. First operand 525 states and 1799 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 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 14:57:25,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:57:25,432 INFO L93 Difference]: Finished difference Result 745 states and 2402 transitions. [2021-11-19 14:57:25,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 14:57:25,434 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 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 23 [2021-11-19 14:57:25,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:57:25,443 INFO L225 Difference]: With dead ends: 745 [2021-11-19 14:57:25,443 INFO L226 Difference]: Without dead ends: 719 [2021-11-19 14:57:25,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=92, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:57:25,444 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 114 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:57:25,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 28 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-19 14:57:25,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2021-11-19 14:57:25,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 553. [2021-11-19 14:57:25,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 552 states have (on average 3.431159420289855) internal successors, (1894), 552 states have internal predecessors, (1894), 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 14:57:25,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 1894 transitions. [2021-11-19 14:57:25,500 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 1894 transitions. Word has length 23 [2021-11-19 14:57:25,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:57:25,500 INFO L470 AbstractCegarLoop]: Abstraction has 553 states and 1894 transitions. [2021-11-19 14:57:25,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 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 14:57:25,501 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 1894 transitions. [2021-11-19 14:57:25,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-19 14:57:25,504 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:57:25,504 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 14:57:25,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 14:57:25,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:57:25,719 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 14:57:25,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:57:25,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1094395076, now seen corresponding path program 5 times [2021-11-19 14:57:25,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:57:25,720 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1067485756] [2021-11-19 14:57:25,720 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-19 14:57:25,720 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:57:25,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:57:25,723 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:57:25,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 14:57:25,865 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:57:25,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:57:25,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:57:25,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:57:26,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:26,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:57:26,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:26,197 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:57:26,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1067485756] [2021-11-19 14:57:26,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1067485756] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:57:26,198 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:57:26,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-19 14:57:26,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14389351] [2021-11-19 14:57:26,198 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:57:26,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:57:26,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:57:26,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:57:26,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:57:26,199 INFO L87 Difference]: Start difference. First operand 553 states and 1894 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 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 14:57:27,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:57:27,497 INFO L93 Difference]: Finished difference Result 943 states and 2898 transitions. [2021-11-19 14:57:27,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:57:27,499 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 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 23 [2021-11-19 14:57:27,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:57:27,509 INFO L225 Difference]: With dead ends: 943 [2021-11-19 14:57:27,509 INFO L226 Difference]: Without dead ends: 893 [2021-11-19 14:57:27,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:57:27,510 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 105 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:57:27,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 21 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-19 14:57:27,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2021-11-19 14:57:27,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 547. [2021-11-19 14:57:27,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 546 states have (on average 3.3516483516483517) internal successors, (1830), 546 states have internal predecessors, (1830), 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 14:57:27,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 1830 transitions. [2021-11-19 14:57:27,549 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 1830 transitions. Word has length 23 [2021-11-19 14:57:27,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:57:27,549 INFO L470 AbstractCegarLoop]: Abstraction has 547 states and 1830 transitions. [2021-11-19 14:57:27,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 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 14:57:27,550 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 1830 transitions. [2021-11-19 14:57:27,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-19 14:57:27,553 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:57:27,554 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 14:57:27,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 14:57:27,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:57:27,767 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 14:57:27,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:57:27,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1289654544, now seen corresponding path program 5 times [2021-11-19 14:57:27,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:57:27,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1533075759] [2021-11-19 14:57:27,768 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-19 14:57:27,768 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:57:27,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:57:27,770 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:57:27,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 14:57:27,936 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:57:27,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:57:27,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 14:57:27,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:57:28,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:28,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:57:28,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:28,240 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:57:28,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1533075759] [2021-11-19 14:57:28,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1533075759] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:57:28,241 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:57:28,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [] total 10 [2021-11-19 14:57:28,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717054081] [2021-11-19 14:57:28,241 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:57:28,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 14:57:28,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:57:28,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 14:57:28,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:57:28,242 INFO L87 Difference]: Start difference. First operand 547 states and 1830 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 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 14:57:31,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:57:31,186 INFO L93 Difference]: Finished difference Result 783 states and 2463 transitions. [2021-11-19 14:57:31,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 14:57:31,187 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 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 14:57:31,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:57:31,196 INFO L225 Difference]: With dead ends: 783 [2021-11-19 14:57:31,196 INFO L226 Difference]: Without dead ends: 727 [2021-11-19 14:57:31,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:57:31,197 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 116 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:57:31,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 57 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-19 14:57:31,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2021-11-19 14:57:31,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 495. [2021-11-19 14:57:31,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 494 states have (on average 3.299595141700405) internal successors, (1630), 494 states have internal predecessors, (1630), 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 14:57:31,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 1630 transitions. [2021-11-19 14:57:31,231 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 1630 transitions. Word has length 23 [2021-11-19 14:57:31,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:57:31,232 INFO L470 AbstractCegarLoop]: Abstraction has 495 states and 1630 transitions. [2021-11-19 14:57:31,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 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 14:57:31,232 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 1630 transitions. [2021-11-19 14:57:31,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-19 14:57:31,235 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:57:31,235 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 14:57:31,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-19 14:57:31,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:57:31,451 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 14:57:31,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:57:31,452 INFO L85 PathProgramCache]: Analyzing trace with hash 479360930, now seen corresponding path program 6 times [2021-11-19 14:57:31,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:57:31,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [15812368] [2021-11-19 14:57:31,452 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-19 14:57:31,453 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:57:31,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:57:31,454 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:57:31,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 14:57:31,752 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-11-19 14:57:31,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:57:31,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:57:31,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:57:31,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:31,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:57:32,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:32,083 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:57:32,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [15812368] [2021-11-19 14:57:32,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [15812368] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:57:32,083 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:57:32,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-19 14:57:32,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090843379] [2021-11-19 14:57:32,084 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:57:32,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:57:32,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:57:32,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:57:32,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:57:32,085 INFO L87 Difference]: Start difference. First operand 495 states and 1630 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 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 14:57:33,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:57:33,592 INFO L93 Difference]: Finished difference Result 683 states and 2163 transitions. [2021-11-19 14:57:33,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 14:57:33,593 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 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 23 [2021-11-19 14:57:33,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:57:33,598 INFO L225 Difference]: With dead ends: 683 [2021-11-19 14:57:33,599 INFO L226 Difference]: Without dead ends: 637 [2021-11-19 14:57:33,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=92, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:57:33,600 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 112 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:57:33,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 27 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-19 14:57:33,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2021-11-19 14:57:33,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 469. [2021-11-19 14:57:33,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 468 states have (on average 3.33974358974359) internal successors, (1563), 468 states have internal predecessors, (1563), 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 14:57:33,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 1563 transitions. [2021-11-19 14:57:33,626 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 1563 transitions. Word has length 23 [2021-11-19 14:57:33,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:57:33,626 INFO L470 AbstractCegarLoop]: Abstraction has 469 states and 1563 transitions. [2021-11-19 14:57:33,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 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 14:57:33,627 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 1563 transitions. [2021-11-19 14:57:33,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-19 14:57:33,629 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:57:33,629 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 14:57:33,657 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-11-19 14:57:33,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:57:33,858 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 14:57:33,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:57:33,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1911104812, now seen corresponding path program 7 times [2021-11-19 14:57:33,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:57:33,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [583859025] [2021-11-19 14:57:33,859 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-19 14:57:33,859 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:57:33,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:57:33,860 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:57:33,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 14:57:33,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:57:33,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:57:33,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:57:34,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:34,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:57:34,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:34,272 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:57:34,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [583859025] [2021-11-19 14:57:34,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [583859025] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:57:34,272 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:57:34,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-19 14:57:34,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443651346] [2021-11-19 14:57:34,273 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:57:34,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:57:34,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:57:34,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:57:34,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:57:34,274 INFO L87 Difference]: Start difference. First operand 469 states and 1563 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 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 14:57:35,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:57:35,643 INFO L93 Difference]: Finished difference Result 861 states and 2655 transitions. [2021-11-19 14:57:35,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 14:57:35,645 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 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 23 [2021-11-19 14:57:35,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:57:35,653 INFO L225 Difference]: With dead ends: 861 [2021-11-19 14:57:35,653 INFO L226 Difference]: Without dead ends: 805 [2021-11-19 14:57:35,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:57:35,654 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 124 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:57:35,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 22 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-19 14:57:35,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2021-11-19 14:57:35,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 419. [2021-11-19 14:57:35,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 418 states have (on average 3.2679425837320575) internal successors, (1366), 418 states have internal predecessors, (1366), 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 14:57:35,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 1366 transitions. [2021-11-19 14:57:35,682 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 1366 transitions. Word has length 23 [2021-11-19 14:57:35,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:57:35,682 INFO L470 AbstractCegarLoop]: Abstraction has 419 states and 1366 transitions. [2021-11-19 14:57:35,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 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 14:57:35,683 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 1366 transitions. [2021-11-19 14:57:35,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-19 14:57:35,685 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:57:35,685 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 14:57:35,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-19 14:57:35,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:57:35,920 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 14:57:35,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:57:35,920 INFO L85 PathProgramCache]: Analyzing trace with hash 874632802, now seen corresponding path program 8 times [2021-11-19 14:57:35,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:57:35,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1463810228] [2021-11-19 14:57:35,921 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:57:35,921 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:57:35,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:57:35,921 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:57:35,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 14:57:36,110 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:57:36,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:57:36,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 14:57:36,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:57:36,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:36,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:57:36,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:36,540 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:57:36,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1463810228] [2021-11-19 14:57:36,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1463810228] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:57:36,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:57:36,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2021-11-19 14:57:36,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700257822] [2021-11-19 14:57:36,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:57:36,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:57:36,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:57:36,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:57:36,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:57:36,542 INFO L87 Difference]: Start difference. First operand 419 states and 1366 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 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 14:57:37,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:57:37,077 INFO L93 Difference]: Finished difference Result 455 states and 1424 transitions. [2021-11-19 14:57:37,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:57:37,079 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 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 14:57:37,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:57:37,083 INFO L225 Difference]: With dead ends: 455 [2021-11-19 14:57:37,083 INFO L226 Difference]: Without dead ends: 441 [2021-11-19 14:57:37,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:57:37,084 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 50 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:57:37,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 14 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 14:57:37,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2021-11-19 14:57:37,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 385. [2021-11-19 14:57:37,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.2916666666666665) internal successors, (1264), 384 states have internal predecessors, (1264), 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 14:57:37,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1264 transitions. [2021-11-19 14:57:37,102 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1264 transitions. Word has length 23 [2021-11-19 14:57:37,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:57:37,103 INFO L470 AbstractCegarLoop]: Abstraction has 385 states and 1264 transitions. [2021-11-19 14:57:37,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 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 14:57:37,103 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1264 transitions. [2021-11-19 14:57:37,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-19 14:57:37,105 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:57:37,105 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 14:57:37,119 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-11-19 14:57:37,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:57:37,320 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 14:57:37,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:57:37,320 INFO L85 PathProgramCache]: Analyzing trace with hash 975815562, now seen corresponding path program 6 times [2021-11-19 14:57:37,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:57:37,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [434450025] [2021-11-19 14:57:37,321 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-19 14:57:37,321 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:57:37,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:57:37,322 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:57:37,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-19 14:57:37,498 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-11-19 14:57:37,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:57:37,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 14:57:37,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:57:37,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:37,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:57:37,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:37,833 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:57:37,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [434450025] [2021-11-19 14:57:37,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [434450025] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:57:37,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [209850316] [2021-11-19 14:57:37,834 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-19 14:57:37,834 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:57:37,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:57:37,835 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:57:37,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-19 14:57:38,170 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-11-19 14:57:38,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:57:38,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:57:38,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:57:38,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:38,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:57:38,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:38,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [209850316] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:57:38,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 14:57:38,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6, 5] total 14 [2021-11-19 14:57:38,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003814542] [2021-11-19 14:57:38,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:57:38,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:57:38,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:57:38,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:57:38,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-11-19 14:57:38,395 INFO L87 Difference]: Start difference. First operand 385 states and 1264 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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 14:57:38,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:57:38,976 INFO L93 Difference]: Finished difference Result 505 states and 1655 transitions. [2021-11-19 14:57:38,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:57:38,977 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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 14:57:38,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:57:38,982 INFO L225 Difference]: With dead ends: 505 [2021-11-19 14:57:38,982 INFO L226 Difference]: Without dead ends: 481 [2021-11-19 14:57:38,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-11-19 14:57:38,983 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 32 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:57:38,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 19 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 14:57:38,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2021-11-19 14:57:38,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 369. [2021-11-19 14:57:38,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 368 states have (on average 3.266304347826087) internal successors, (1202), 368 states have internal predecessors, (1202), 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 14:57:38,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 1202 transitions. [2021-11-19 14:57:39,000 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 1202 transitions. Word has length 23 [2021-11-19 14:57:39,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:57:39,000 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 1202 transitions. [2021-11-19 14:57:39,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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 14:57:39,001 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 1202 transitions. [2021-11-19 14:57:39,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-19 14:57:39,003 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:57:39,003 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 14:57:39,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-19 14:57:39,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-19 14:57:39,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 14:57:39,416 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 14:57:39,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:57:39,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1612279716, now seen corresponding path program 7 times [2021-11-19 14:57:39,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:57:39,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2081077240] [2021-11-19 14:57:39,418 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-19 14:57:39,418 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:57:39,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:57:39,419 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:57:39,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-19 14:57:39,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:57:39,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:57:39,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:57:39,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:39,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:57:39,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:39,847 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:57:39,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2081077240] [2021-11-19 14:57:39,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2081077240] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:57:39,847 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:57:39,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-19 14:57:39,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412827636] [2021-11-19 14:57:39,847 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:57:39,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:57:39,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:57:39,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:57:39,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:57:39,848 INFO L87 Difference]: Start difference. First operand 369 states and 1202 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 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 14:57:41,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:57:41,082 INFO L93 Difference]: Finished difference Result 511 states and 1609 transitions. [2021-11-19 14:57:41,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 14:57:41,083 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 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 23 [2021-11-19 14:57:41,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:57:41,087 INFO L225 Difference]: With dead ends: 511 [2021-11-19 14:57:41,087 INFO L226 Difference]: Without dead ends: 485 [2021-11-19 14:57:41,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=92, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:57:41,089 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 94 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:57:41,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 34 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-19 14:57:41,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2021-11-19 14:57:41,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 373. [2021-11-19 14:57:41,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 372 states have (on average 3.28494623655914) internal successors, (1222), 372 states have internal predecessors, (1222), 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 14:57:41,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 1222 transitions. [2021-11-19 14:57:41,105 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 1222 transitions. Word has length 23 [2021-11-19 14:57:41,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:57:41,106 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 1222 transitions. [2021-11-19 14:57:41,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 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 14:57:41,106 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 1222 transitions. [2021-11-19 14:57:41,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-19 14:57:41,108 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:57:41,109 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 14:57:41,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-19 14:57:41,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:57:41,335 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 14:57:41,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:57:41,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1785207194, now seen corresponding path program 8 times [2021-11-19 14:57:41,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:57:41,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2534515] [2021-11-19 14:57:41,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:57:41,336 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:57:41,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:57:41,337 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:57:41,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-19 14:57:41,574 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:57:41,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:57:41,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 14:57:41,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:57:41,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:41,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:57:41,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:41,988 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:57:41,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2534515] [2021-11-19 14:57:41,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2534515] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:57:41,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1537048883] [2021-11-19 14:57:41,988 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:57:41,988 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:57:41,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:57:41,989 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:57:41,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-19 14:57:42,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:57:42,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:57:42,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:57:42,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:57:42,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:42,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:57:42,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:42,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1537048883] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:57:42,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 14:57:42,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6, 5] total 14 [2021-11-19 14:57:42,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010436683] [2021-11-19 14:57:42,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:57:42,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:57:42,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:57:42,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:57:42,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2021-11-19 14:57:42,670 INFO L87 Difference]: Start difference. First operand 373 states and 1222 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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 14:57:43,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:57:43,275 INFO L93 Difference]: Finished difference Result 507 states and 1575 transitions. [2021-11-19 14:57:43,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:57:43,276 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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 14:57:43,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:57:43,279 INFO L225 Difference]: With dead ends: 507 [2021-11-19 14:57:43,279 INFO L226 Difference]: Without dead ends: 495 [2021-11-19 14:57:43,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:57:43,280 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 50 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:57:43,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 13 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 14:57:43,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2021-11-19 14:57:43,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 361. [2021-11-19 14:57:43,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 360 states have (on average 3.2444444444444445) internal successors, (1168), 360 states have internal predecessors, (1168), 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 14:57:43,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 1168 transitions. [2021-11-19 14:57:43,295 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 1168 transitions. Word has length 23 [2021-11-19 14:57:43,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:57:43,296 INFO L470 AbstractCegarLoop]: Abstraction has 361 states and 1168 transitions. [2021-11-19 14:57:43,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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 14:57:43,296 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 1168 transitions. [2021-11-19 14:57:43,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-19 14:57:43,298 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:57:43,298 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 14:57:43,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-19 14:57:43,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-11-19 14:57:43,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 14:57:43,711 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 14:57:43,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:57:43,711 INFO L85 PathProgramCache]: Analyzing trace with hash -887042012, now seen corresponding path program 9 times [2021-11-19 14:57:43,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:57:43,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [133882370] [2021-11-19 14:57:43,712 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 14:57:43,712 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:57:43,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:57:43,713 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:57:43,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-19 14:57:43,891 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-19 14:57:43,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:57:43,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:57:43,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:57:44,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:44,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:57:44,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:44,116 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:57:44,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [133882370] [2021-11-19 14:57:44,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [133882370] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:57:44,117 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:57:44,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-19 14:57:44,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661851080] [2021-11-19 14:57:44,117 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:57:44,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:57:44,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:57:44,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:57:44,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:57:44,119 INFO L87 Difference]: Start difference. First operand 361 states and 1168 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 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 14:57:45,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:57:45,234 INFO L93 Difference]: Finished difference Result 443 states and 1379 transitions. [2021-11-19 14:57:45,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 14:57:45,236 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 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 23 [2021-11-19 14:57:45,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:57:45,239 INFO L225 Difference]: With dead ends: 443 [2021-11-19 14:57:45,239 INFO L226 Difference]: Without dead ends: 406 [2021-11-19 14:57:45,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=92, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:57:45,240 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 86 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:57:45,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 32 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-19 14:57:45,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2021-11-19 14:57:45,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 328. [2021-11-19 14:57:45,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 327 states have (on average 3.3363914373088686) internal successors, (1091), 327 states have internal predecessors, (1091), 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 14:57:45,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 1091 transitions. [2021-11-19 14:57:45,256 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 1091 transitions. Word has length 23 [2021-11-19 14:57:45,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:57:45,256 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 1091 transitions. [2021-11-19 14:57:45,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 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 14:57:45,257 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 1091 transitions. [2021-11-19 14:57:45,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-19 14:57:45,259 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:57:45,259 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, 1] [2021-11-19 14:57:45,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-19 14:57:45,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:57:45,472 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 14:57:45,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:57:45,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1140607578, now seen corresponding path program 1 times [2021-11-19 14:57:45,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:57:45,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [612683817] [2021-11-19 14:57:45,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:57:45,473 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:57:45,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:57:45,474 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:57:45,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-19 14:57:45,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:57:45,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 14:57:45,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:57:45,765 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:57:45,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:57:45,948 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:57:45,948 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:57:45,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [612683817] [2021-11-19 14:57:45,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [612683817] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:57:45,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1519982378] [2021-11-19 14:57:45,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:57:45,949 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:57:45,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:57:45,949 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:57:45,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-11-19 14:57:46,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:57:46,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:57:46,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:57:46,320 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:57:46,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:57:46,494 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:57:46,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1519982378] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:57:46,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793018378] [2021-11-19 14:57:46,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:57:46,494 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:57:46,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:57:46,496 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:57:46,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-19 14:57:46,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:57:46,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:57:46,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:57:46,699 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:57:46,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:57:46,835 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:57:46,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793018378] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:57:46,836 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 14:57:46,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5, 5, 5, 5] total 22 [2021-11-19 14:57:46,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027229151] [2021-11-19 14:57:46,836 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 14:57:46,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-19 14:57:46,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:57:46,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-19 14:57:46,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2021-11-19 14:57:46,838 INFO L87 Difference]: Start difference. First operand 328 states and 1091 transitions. Second operand has 22 states, 22 states have (on average 3.727272727272727) internal successors, (82), 22 states have internal predecessors, (82), 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 14:57:51,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:57:51,384 INFO L93 Difference]: Finished difference Result 1188 states and 3622 transitions. [2021-11-19 14:57:51,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-19 14:57:51,386 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.727272727272727) internal successors, (82), 22 states have internal predecessors, (82), 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 26 [2021-11-19 14:57:51,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:57:51,398 INFO L225 Difference]: With dead ends: 1188 [2021-11-19 14:57:51,398 INFO L226 Difference]: Without dead ends: 1140 [2021-11-19 14:57:51,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=565, Invalid=1691, Unknown=0, NotChecked=0, Total=2256 [2021-11-19 14:57:51,402 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 578 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:57:51,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [578 Valid, 80 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-19 14:57:51,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2021-11-19 14:57:51,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 446. [2021-11-19 14:57:51,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 445 states have (on average 3.593258426966292) internal successors, (1599), 445 states have internal predecessors, (1599), 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 14:57:51,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 1599 transitions. [2021-11-19 14:57:51,440 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 1599 transitions. Word has length 26 [2021-11-19 14:57:51,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:57:51,440 INFO L470 AbstractCegarLoop]: Abstraction has 446 states and 1599 transitions. [2021-11-19 14:57:51,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.727272727272727) internal successors, (82), 22 states have internal predecessors, (82), 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 14:57:51,441 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 1599 transitions. [2021-11-19 14:57:51,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-19 14:57:51,443 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:57:51,443 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, 1, 1] [2021-11-19 14:57:51,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2021-11-19 14:57:51,670 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-11-19 14:57:51,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-19 14:57:52,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:57:52,047 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 14:57:52,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:57:52,047 INFO L85 PathProgramCache]: Analyzing trace with hash 2021110705, now seen corresponding path program 1 times [2021-11-19 14:57:52,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:57:52,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [81471972] [2021-11-19 14:57:52,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:57:52,048 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:57:52,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:57:52,049 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:57:52,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-19 14:57:52,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:57:52,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 14:57:52,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:57:52,361 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:57:52,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:57:52,529 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:57:52,530 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:57:52,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [81471972] [2021-11-19 14:57:52,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [81471972] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:57:52,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [774962264] [2021-11-19 14:57:52,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:57:52,530 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:57:52,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:57:52,531 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:57:52,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2021-11-19 14:57:52,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:57:52,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:57:52,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:57:52,914 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:57:52,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:57:53,102 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:57:53,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [774962264] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:57:53,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962447977] [2021-11-19 14:57:53,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:57:53,103 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:57:53,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:57:53,104 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:57:53,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-11-19 14:57:53,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:57:53,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:57:53,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:57:53,359 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:57:53,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:57:53,456 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:57:53,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962447977] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:57:53,457 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 14:57:53,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5, 5, 5, 5] total 18 [2021-11-19 14:57:53,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460349885] [2021-11-19 14:57:53,457 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 14:57:53,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-19 14:57:53,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:57:53,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-19 14:57:53,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2021-11-19 14:57:53,458 INFO L87 Difference]: Start difference. First operand 446 states and 1599 transitions. Second operand has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 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 14:57:55,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:57:55,986 INFO L93 Difference]: Finished difference Result 716 states and 2308 transitions. [2021-11-19 14:57:55,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-19 14:57:55,987 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 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 27 [2021-11-19 14:57:55,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:57:55,993 INFO L225 Difference]: With dead ends: 716 [2021-11-19 14:57:55,993 INFO L226 Difference]: Without dead ends: 716 [2021-11-19 14:57:55,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=361, Invalid=971, Unknown=0, NotChecked=0, Total=1332 [2021-11-19 14:57:55,994 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 295 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:57:55,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 66 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-19 14:57:55,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2021-11-19 14:57:56,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 398. [2021-11-19 14:57:56,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 397 states have (on average 3.2493702770780857) internal successors, (1290), 397 states have internal predecessors, (1290), 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 14:57:56,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 1290 transitions. [2021-11-19 14:57:56,013 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 1290 transitions. Word has length 27 [2021-11-19 14:57:56,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:57:56,014 INFO L470 AbstractCegarLoop]: Abstraction has 398 states and 1290 transitions. [2021-11-19 14:57:56,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 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 14:57:56,014 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 1290 transitions. [2021-11-19 14:57:56,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-19 14:57:56,016 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:57:56,016 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, 1, 1, 1] [2021-11-19 14:57:56,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2021-11-19 14:57:56,244 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2021-11-19 14:57:56,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-19 14:57:56,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:57:56,620 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 14:57:56,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:57:56,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1864222224, now seen corresponding path program 1 times [2021-11-19 14:57:56,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:57:56,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1579662180] [2021-11-19 14:57:56,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:57:56,621 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:57:56,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:57:56,622 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:57:56,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f9073f-3d38-4166-bfd6-d8b478e152e6/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-19 14:57:57,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:57:57,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 43 conjunts are in the unsatisfiable core [2021-11-19 14:57:57,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:57:57,815 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:57:57,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 895 treesize of output 641 [2021-11-19 14:57:58,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 257 treesize of output 185 [2021-11-19 14:57:58,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 183 treesize of output 127