./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-three-array-min.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_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/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_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/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_13d17ec1-3550-47dc-85d4-df810e6f2ece/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 3e185f9c0dac86cdbb29caae2de39811a090d813c08c4c3552062c2aa77b8788 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:58:18,842 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:58:18,843 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:58:18,892 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:58:18,893 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:58:18,898 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:58:18,899 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:58:18,901 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:58:18,903 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:58:18,904 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:58:18,906 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:58:18,907 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:58:18,907 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:58:18,909 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:58:18,910 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:58:18,912 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:58:18,917 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:58:18,918 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:58:18,921 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:58:18,926 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:58:18,934 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:58:18,936 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:58:18,937 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:58:18,942 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:58:18,947 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:58:18,950 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:58:18,950 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:58:18,951 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:58:18,953 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:58:18,954 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:58:18,955 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:58:18,955 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:58:18,956 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:58:18,957 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:58:18,958 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:58:18,958 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:58:18,959 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:58:18,959 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:58:18,959 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:58:18,960 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:58:18,961 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:58:18,962 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 14:58:19,019 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:58:19,019 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:58:19,020 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:58:19,020 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:58:19,021 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:58:19,021 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:58:19,021 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:58:19,021 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:58:19,021 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:58:19,022 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:58:19,022 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:58:19,022 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:58:19,022 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:58:19,023 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:58:19,023 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:58:19,023 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:58:19,024 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:58:19,024 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:58:19,024 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:58:19,024 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:58:19,025 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:58:19,025 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:58:19,025 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:58:19,025 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:58:19,025 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:58:19,026 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:58:19,026 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:58:19,026 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:58:19,026 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:58:19,026 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:58:19,027 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:58:19,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:58:19,027 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:58:19,027 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:58:19,028 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:58:19,028 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:58:19,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:58:19,033 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:58:19,033 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:58:19,033 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:58:19,033 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_13d17ec1-3550-47dc-85d4-df810e6f2ece/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e185f9c0dac86cdbb29caae2de39811a090d813c08c4c3552062c2aa77b8788 [2021-11-19 14:58:19,313 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:58:19,333 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:58:19,336 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:58:19,337 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:58:19,338 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:58:19,340 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c [2021-11-19 14:58:19,398 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/data/413b1ad47/7d37a28f68db43b1af0c60ed6eead5cc/FLAG23f683ac3 [2021-11-19 14:58:19,834 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:58:19,834 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c [2021-11-19 14:58:19,842 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/data/413b1ad47/7d37a28f68db43b1af0c60ed6eead5cc/FLAG23f683ac3 [2021-11-19 14:58:20,236 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/data/413b1ad47/7d37a28f68db43b1af0c60ed6eead5cc [2021-11-19 14:58:20,237 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:58:20,239 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:58:20,241 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:58:20,241 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:58:20,244 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:58:20,245 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:58:20" (1/1) ... [2021-11-19 14:58:20,246 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b393529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:58:20, skipping insertion in model container [2021-11-19 14:58:20,246 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:58:20" (1/1) ... [2021-11-19 14:58:20,253 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:58:20,297 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:58:20,514 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_13d17ec1-3550-47dc-85d4-df810e6f2ece/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c[2815,2828] [2021-11-19 14:58:20,524 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:58:20,534 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 14:58:20,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@541e0ad6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:58:20, skipping insertion in model container [2021-11-19 14:58:20,534 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:58:20,535 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:58:20,537 INFO L158 Benchmark]: Toolchain (without parser) took 296.94ms. Allocated memory is still 100.7MB. Free memory was 59.7MB in the beginning and 69.0MB in the end (delta: -9.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 14:58:20,538 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 100.7MB. Free memory is still 76.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:58:20,539 INFO L158 Benchmark]: CACSL2BoogieTranslator took 294.24ms. Allocated memory is still 100.7MB. Free memory was 59.4MB in the beginning and 69.0MB in the end (delta: -9.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 14:58:20,541 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 100.7MB. Free memory is still 76.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 294.24ms. Allocated memory is still 100.7MB. Free memory was 59.4MB in the beginning and 69.0MB in the end (delta: -9.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 123]: 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_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/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_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/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_13d17ec1-3550-47dc-85d4-df810e6f2ece/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 3e185f9c0dac86cdbb29caae2de39811a090d813c08c4c3552062c2aa77b8788 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:58:22,989 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:58:22,991 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:58:23,038 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:58:23,039 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:58:23,044 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:58:23,046 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:58:23,054 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:58:23,057 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:58:23,066 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:58:23,067 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:58:23,069 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:58:23,070 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:58:23,073 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:58:23,076 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:58:23,082 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:58:23,085 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:58:23,086 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:58:23,088 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:58:23,098 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:58:23,100 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:58:23,102 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:58:23,104 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:58:23,107 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:58:23,116 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:58:23,116 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:58:23,117 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:58:23,119 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:58:23,119 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:58:23,121 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:58:23,122 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:58:23,123 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:58:23,125 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:58:23,126 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:58:23,127 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:58:23,128 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:58:23,129 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:58:23,129 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:58:23,129 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:58:23,131 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:58:23,132 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:58:23,133 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-19 14:58:23,169 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:58:23,169 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:58:23,171 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:58:23,171 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:58:23,171 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:58:23,172 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:58:23,172 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:58:23,172 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:58:23,173 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:58:23,173 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:58:23,176 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:58:23,176 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:58:23,176 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:58:23,176 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:58:23,177 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:58:23,177 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:58:23,177 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:58:23,177 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:58:23,177 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:58:23,178 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:58:23,178 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:58:23,178 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:58:23,178 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:58:23,178 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:58:23,179 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:58:23,179 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:58:23,179 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:58:23,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:58:23,179 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:58:23,180 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:58:23,180 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:58:23,180 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:58:23,180 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:58:23,180 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:58:23,181 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:58:23,181 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:58:23,181 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_13d17ec1-3550-47dc-85d4-df810e6f2ece/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e185f9c0dac86cdbb29caae2de39811a090d813c08c4c3552062c2aa77b8788 [2021-11-19 14:58:23,600 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:58:23,628 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:58:23,631 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:58:23,633 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:58:23,634 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:58:23,635 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c [2021-11-19 14:58:23,706 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/data/dda2342fe/dcc450e74e2a46b58eec1877813ce60f/FLAGb0c0288b8 [2021-11-19 14:58:24,366 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:58:24,369 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c [2021-11-19 14:58:24,381 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/data/dda2342fe/dcc450e74e2a46b58eec1877813ce60f/FLAGb0c0288b8 [2021-11-19 14:58:24,666 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/data/dda2342fe/dcc450e74e2a46b58eec1877813ce60f [2021-11-19 14:58:24,669 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:58:24,671 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:58:24,673 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:58:24,673 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:58:24,677 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:58:24,679 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:58:24" (1/1) ... [2021-11-19 14:58:24,680 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4057f741 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:58:24, skipping insertion in model container [2021-11-19 14:58:24,680 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:58:24" (1/1) ... [2021-11-19 14:58:24,689 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:58:24,713 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:58:24,917 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_13d17ec1-3550-47dc-85d4-df810e6f2ece/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c[2815,2828] [2021-11-19 14:58:24,932 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:58:24,944 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:58:24,951 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:58:24,971 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_13d17ec1-3550-47dc-85d4-df810e6f2ece/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c[2815,2828] [2021-11-19 14:58:25,002 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:58:25,012 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:58:25,062 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_13d17ec1-3550-47dc-85d4-df810e6f2ece/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c[2815,2828] [2021-11-19 14:58:25,078 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:58:25,096 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:58:25,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:58:25 WrapperNode [2021-11-19 14:58:25,098 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:58:25,100 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:58:25,100 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:58:25,100 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:58:25,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:58:25" (1/1) ... [2021-11-19 14:58:25,133 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:58:25" (1/1) ... [2021-11-19 14:58:25,185 INFO L137 Inliner]: procedures = 28, calls = 57, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 225 [2021-11-19 14:58:25,192 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:58:25,193 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:58:25,193 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:58:25,193 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:58:25,201 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:58:25" (1/1) ... [2021-11-19 14:58:25,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:58:25" (1/1) ... [2021-11-19 14:58:25,208 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:58:25" (1/1) ... [2021-11-19 14:58:25,212 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:58:25" (1/1) ... [2021-11-19 14:58:25,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:58:25" (1/1) ... [2021-11-19 14:58:25,238 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:58:25" (1/1) ... [2021-11-19 14:58:25,241 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:58:25" (1/1) ... [2021-11-19 14:58:25,246 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:58:25,247 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:58:25,247 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:58:25,247 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:58:25,248 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:58:25" (1/1) ... [2021-11-19 14:58:25,255 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:58:25,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:58:25,289 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:58:25,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:58:25,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:58:25,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:58:25,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:58:25,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 14:58:25,337 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-19 14:58:25,337 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-19 14:58:25,337 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-19 14:58:25,338 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-19 14:58:25,338 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-19 14:58:25,338 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-19 14:58:25,338 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-19 14:58:25,338 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-19 14:58:25,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:58:25,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:58:25,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:58:25,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:58:25,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 14:58:25,341 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 14:58:25,497 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:58:25,499 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:58:26,195 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:58:26,345 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:58:26,345 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-19 14:58:26,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:58:26 BoogieIcfgContainer [2021-11-19 14:58:26,350 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:58:26,353 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:58:26,353 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:58:26,356 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:58:26,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:58:24" (1/3) ... [2021-11-19 14:58:26,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d573ae4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:58:26, skipping insertion in model container [2021-11-19 14:58:26,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:58:25" (2/3) ... [2021-11-19 14:58:26,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d573ae4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:58:26, skipping insertion in model container [2021-11-19 14:58:26,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:58:26" (3/3) ... [2021-11-19 14:58:26,362 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-three-array-min.wvr.c [2021-11-19 14:58:26,368 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-19 14:58:26,369 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:58:26,369 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 14:58:26,370 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-19 14:58:26,433 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,434 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,434 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,434 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,435 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,435 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,435 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,435 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,436 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,436 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,437 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,437 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,437 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,438 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,439 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,439 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,439 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,440 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,440 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,440 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,441 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,441 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,441 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,441 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,442 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,442 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,442 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,442 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,442 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,443 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,443 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,443 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,443 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,444 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,444 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,444 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,445 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,445 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,445 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,445 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,446 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,446 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,446 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,446 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,447 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,447 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,448 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,448 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,448 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,448 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,449 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,449 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,450 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,450 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,450 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,450 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,450 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,451 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,451 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,451 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,452 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,452 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,452 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,453 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,453 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,453 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,453 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,454 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,454 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,454 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,455 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,456 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,458 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,458 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,459 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,459 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,459 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,460 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,460 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,460 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,460 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,466 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,467 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,467 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,467 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,467 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,468 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,468 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,468 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,468 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,468 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,468 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,471 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,471 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,472 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,472 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,472 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,472 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,473 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,473 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,473 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,473 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,473 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,474 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,474 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,474 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,474 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,475 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,476 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,476 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,477 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,477 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,477 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,477 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,478 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,478 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,478 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,478 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,478 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,479 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,479 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,479 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,479 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,480 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,480 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,480 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,480 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,481 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,481 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,481 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,481 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,481 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,482 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,482 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,482 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,482 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,483 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,483 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,497 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,497 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,497 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,498 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,498 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,515 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,515 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,516 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,516 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,517 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,517 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,517 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,517 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,517 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,518 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,518 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,518 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,519 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,519 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,519 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,519 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,519 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,520 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,520 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,520 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,522 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,522 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,523 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,523 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:58:26,526 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-11-19 14:58:26,586 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:58:26,596 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 14:58:26,596 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-19 14:58:26,622 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-19 14:58:26,639 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 292 places, 309 transitions, 642 flow [2021-11-19 14:58:26,642 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 292 places, 309 transitions, 642 flow [2021-11-19 14:58:26,644 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 292 places, 309 transitions, 642 flow [2021-11-19 14:58:26,819 INFO L129 PetriNetUnfolder]: 27/306 cut-off events. [2021-11-19 14:58:26,819 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-11-19 14:58:26,824 INFO L84 FinitePrefix]: Finished finitePrefix Result has 319 conditions, 306 events. 27/306 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 204 event pairs, 0 based on Foata normal form. 0/278 useless extension candidates. Maximal degree in co-relation 239. Up to 3 conditions per place. [2021-11-19 14:58:26,829 INFO L116 LiptonReduction]: Number of co-enabled transitions 2634 [2021-11-19 14:59:14,546 INFO L131 LiptonReduction]: Checked pairs total: 4320 [2021-11-19 14:59:14,547 INFO L133 LiptonReduction]: Total number of compositions: 338 [2021-11-19 14:59:14,554 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 39 transitions, 102 flow [2021-11-19 14:59:14,585 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 263 states, 262 states have (on average 3.519083969465649) internal successors, (922), 262 states have internal predecessors, (922), 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 14:59:14,589 INFO L276 IsEmpty]: Start isEmpty. Operand has 263 states, 262 states have (on average 3.519083969465649) internal successors, (922), 262 states have internal predecessors, (922), 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 14:59:14,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-19 14:59:14,603 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:59:14,604 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 14:59:14,604 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 14:59:14,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:59:14,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1801605574, now seen corresponding path program 1 times [2021-11-19 14:59:14,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:59:14,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1997178694] [2021-11-19 14:59:14,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:59:14,624 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:59:14,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:59:14,633 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:59:14,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:59:14,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:59:14,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 14:59:14,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:59:15,019 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 14:59:15,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:59:15,150 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 14:59:15,150 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:59:15,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1997178694] [2021-11-19 14:59:15,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1997178694] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:59:15,152 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:59:15,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [] total 5 [2021-11-19 14:59:15,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869816261] [2021-11-19 14:59:15,154 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:59:15,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:59:15,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:59:15,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:59:15,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:59:15,191 INFO L87 Difference]: Start difference. First operand has 263 states, 262 states have (on average 3.519083969465649) internal successors, (922), 262 states have internal predecessors, (922), 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 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:59:15,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:59:15,815 INFO L93 Difference]: Finished difference Result 314 states and 1148 transitions. [2021-11-19 14:59:15,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:59:15,818 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-19 14:59:15,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:59:15,834 INFO L225 Difference]: With dead ends: 314 [2021-11-19 14:59:15,834 INFO L226 Difference]: Without dead ends: 314 [2021-11-19 14:59:15,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:59:15,839 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 16 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:59:15,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 31 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 14:59:15,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-11-19 14:59:15,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2021-11-19 14:59:15,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 313 states have (on average 3.6677316293929714) internal successors, (1148), 313 states have internal predecessors, (1148), 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 14:59:15,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 1148 transitions. [2021-11-19 14:59:15,916 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 1148 transitions. Word has length 22 [2021-11-19 14:59:15,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:59:15,916 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 1148 transitions. [2021-11-19 14:59:15,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:59:15,917 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 1148 transitions. [2021-11-19 14:59:15,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-19 14:59:15,922 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:59:15,923 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 14:59:15,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:59:16,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:59:16,139 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 14:59:16,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:59:16,140 INFO L85 PathProgramCache]: Analyzing trace with hash 510493109, now seen corresponding path program 1 times [2021-11-19 14:59:16,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:59:16,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [438104291] [2021-11-19 14:59:16,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:59:16,143 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:59:16,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:59:16,144 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:59:16,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:59:16,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:59:16,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 14:59:16,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:59:16,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 14:59:16,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:59:16,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 14:59:16,554 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:59:16,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [438104291] [2021-11-19 14:59:16,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [438104291] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:59:16,555 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:59:16,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 5] imperfect sequences [] total 7 [2021-11-19 14:59:16,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77245953] [2021-11-19 14:59:16,555 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:59:16,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:59:16,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:59:16,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:59:16,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:59:16,557 INFO L87 Difference]: Start difference. First operand 314 states and 1148 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:59:17,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:59:17,542 INFO L93 Difference]: Finished difference Result 316 states and 1150 transitions. [2021-11-19 14:59:17,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:59:17,544 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-19 14:59:17,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:59:17,548 INFO L225 Difference]: With dead ends: 316 [2021-11-19 14:59:17,548 INFO L226 Difference]: Without dead ends: 316 [2021-11-19 14:59:17,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:59:17,550 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 48 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:59:17,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 31 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 14:59:17,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-11-19 14:59:17,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 316. [2021-11-19 14:59:17,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 315 states have (on average 3.6507936507936507) internal successors, (1150), 315 states have internal predecessors, (1150), 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 14:59:17,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 1150 transitions. [2021-11-19 14:59:17,576 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 1150 transitions. Word has length 23 [2021-11-19 14:59:17,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:59:17,577 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 1150 transitions. [2021-11-19 14:59:17,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:59:17,577 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 1150 transitions. [2021-11-19 14:59:17,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-19 14:59:17,582 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:59:17,582 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:59:17,593 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-19 14:59:17,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:59:17,793 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 14:59:17,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:59:17,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1853228484, now seen corresponding path program 1 times [2021-11-19 14:59:17,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:59:17,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [939577040] [2021-11-19 14:59:17,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:59:17,794 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:59:17,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:59:17,795 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:59:17,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:59:18,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:59:18,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-19 14:59:18,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:59:18,812 INFO L354 Elim1Store]: treesize reduction 156, result has 58.2 percent of original size [2021-11-19 14:59:18,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 226 treesize of output 288 [2021-11-19 14:59:25,477 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:59:25,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:59:25,675 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:59:25,675 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:59:25,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [939577040] [2021-11-19 14:59:25,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [939577040] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:59:25,676 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:59:25,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 14:59:25,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167193942] [2021-11-19 14:59:25,677 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:59:25,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:59:25,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:59:25,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:59:25,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:59:25,679 INFO L87 Difference]: Start difference. First operand 316 states and 1150 transitions. Second operand has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 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 14:59:25,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:59:25,821 INFO L93 Difference]: Finished difference Result 413 states and 1507 transitions. [2021-11-19 14:59:25,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:59:25,823 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 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 25 [2021-11-19 14:59:25,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:59:25,828 INFO L225 Difference]: With dead ends: 413 [2021-11-19 14:59:25,829 INFO L226 Difference]: Without dead ends: 406 [2021-11-19 14:59:25,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:59:25,831 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 5 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:59:25,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 8 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 25 Unchecked, 0.1s Time] [2021-11-19 14:59:25,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2021-11-19 14:59:25,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 400. [2021-11-19 14:59:25,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 399 states have (on average 3.68922305764411) internal successors, (1472), 399 states have internal predecessors, (1472), 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 14:59:25,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 1472 transitions. [2021-11-19 14:59:25,865 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 1472 transitions. Word has length 25 [2021-11-19 14:59:25,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:59:25,866 INFO L470 AbstractCegarLoop]: Abstraction has 400 states and 1472 transitions. [2021-11-19 14:59:25,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 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 14:59:25,867 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 1472 transitions. [2021-11-19 14:59:25,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-19 14:59:25,870 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:59:25,871 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 14:59:25,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:59:26,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:59:26,089 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 14:59:26,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:59:26,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1977534372, now seen corresponding path program 1 times [2021-11-19 14:59:26,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:59:26,091 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2100456859] [2021-11-19 14:59:26,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:59:26,091 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:59:26,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:59:26,093 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:59:26,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:59:26,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:59:26,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 14:59:26,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:59:26,447 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:59:26,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:59:26,537 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:59:26,538 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:59:26,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2100456859] [2021-11-19 14:59:26,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2100456859] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:59:26,538 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:59:26,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-19 14:59:26,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213654401] [2021-11-19 14:59:26,539 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:59:26,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:59:26,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:59:26,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:59:26,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:59:26,540 INFO L87 Difference]: Start difference. First operand 400 states and 1472 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 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 14:59:28,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:59:28,114 INFO L93 Difference]: Finished difference Result 642 states and 2345 transitions. [2021-11-19 14:59:28,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 14:59:28,116 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 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 26 [2021-11-19 14:59:28,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:59:28,124 INFO L225 Difference]: With dead ends: 642 [2021-11-19 14:59:28,125 INFO L226 Difference]: Without dead ends: 634 [2021-11-19 14:59:28,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=149, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:59:28,131 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 122 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:59:28,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 70 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-19 14:59:28,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2021-11-19 14:59:28,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 442. [2021-11-19 14:59:28,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 441 states have (on average 3.675736961451247) internal successors, (1621), 441 states have internal predecessors, (1621), 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 14:59:28,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 1621 transitions. [2021-11-19 14:59:28,178 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 1621 transitions. Word has length 26 [2021-11-19 14:59:28,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:59:28,179 INFO L470 AbstractCegarLoop]: Abstraction has 442 states and 1621 transitions. [2021-11-19 14:59:28,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 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 14:59:28,179 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 1621 transitions. [2021-11-19 14:59:28,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-19 14:59:28,182 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:59:28,182 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 14:59:28,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:59:28,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:59:28,407 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 14:59:28,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:59:28,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1367117398, now seen corresponding path program 2 times [2021-11-19 14:59:28,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:59:28,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2067470929] [2021-11-19 14:59:28,409 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:59:28,409 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:59:28,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:59:28,410 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:59:28,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:59:28,606 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-19 14:59:28,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:59:28,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-19 14:59:28,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:59:29,467 INFO L354 Elim1Store]: treesize reduction 156, result has 58.2 percent of original size [2021-11-19 14:59:29,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 226 treesize of output 288 [2021-11-19 14:59:36,228 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 14:59:36,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:59:36,641 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 14:59:36,641 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:59:36,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2067470929] [2021-11-19 14:59:36,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2067470929] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:59:36,641 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:59:36,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 14:59:36,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307425374] [2021-11-19 14:59:36,642 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:59:36,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:59:36,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:59:36,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:59:36,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:59:36,643 INFO L87 Difference]: Start difference. First operand 442 states and 1621 transitions. Second operand has 4 states, 3 states have (on average 15.333333333333334) internal successors, (46), 4 states have internal predecessors, (46), 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 14:59:36,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:59:36,760 INFO L93 Difference]: Finished difference Result 507 states and 1857 transitions. [2021-11-19 14:59:36,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:59:36,761 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 15.333333333333334) internal successors, (46), 4 states have internal predecessors, (46), 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 14:59:36,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:59:36,767 INFO L225 Difference]: With dead ends: 507 [2021-11-19 14:59:36,767 INFO L226 Difference]: Without dead ends: 492 [2021-11-19 14:59:36,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:59:36,769 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 5 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:59:36,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 8 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 25 Unchecked, 0.1s Time] [2021-11-19 14:59:36,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2021-11-19 14:59:36,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 422. [2021-11-19 14:59:36,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 421 states have (on average 3.676959619952494) internal successors, (1548), 421 states have internal predecessors, (1548), 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 14:59:36,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 1548 transitions. [2021-11-19 14:59:36,791 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 1548 transitions. Word has length 26 [2021-11-19 14:59:36,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:59:36,792 INFO L470 AbstractCegarLoop]: Abstraction has 422 states and 1548 transitions. [2021-11-19 14:59:36,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 15.333333333333334) internal successors, (46), 4 states have internal predecessors, (46), 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 14:59:36,792 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 1548 transitions. [2021-11-19 14:59:36,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-19 14:59:36,795 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:59:36,795 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 14:59:36,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:59:37,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:59:37,010 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 14:59:37,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:59:37,011 INFO L85 PathProgramCache]: Analyzing trace with hash 796647934, now seen corresponding path program 1 times [2021-11-19 14:59:37,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:59:37,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1423441663] [2021-11-19 14:59:37,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:59:37,012 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:59:37,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:59:37,013 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:59:37,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:59:37,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:59:37,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:59:37,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:59:37,230 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:59:37,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:59:37,308 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:59:37,308 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:59:37,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1423441663] [2021-11-19 14:59:37,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1423441663] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:59:37,309 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:59:37,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-19 14:59:37,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563327197] [2021-11-19 14:59:37,310 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:59:37,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:59:37,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:59:37,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:59:37,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:59:37,311 INFO L87 Difference]: Start difference. First operand 422 states and 1548 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 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 14:59:38,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:59:38,138 INFO L93 Difference]: Finished difference Result 746 states and 2643 transitions. [2021-11-19 14:59:38,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:59:38,140 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 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 14:59:38,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:59:38,146 INFO L225 Difference]: With dead ends: 746 [2021-11-19 14:59:38,147 INFO L226 Difference]: Without dead ends: 578 [2021-11-19 14:59:38,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:59:38,151 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 107 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:59:38,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 36 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 14:59:38,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2021-11-19 14:59:38,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 504. [2021-11-19 14:59:38,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 503 states have (on average 3.497017892644135) internal successors, (1759), 503 states have internal predecessors, (1759), 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 14:59:38,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 1759 transitions. [2021-11-19 14:59:38,180 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 1759 transitions. Word has length 27 [2021-11-19 14:59:38,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:59:38,180 INFO L470 AbstractCegarLoop]: Abstraction has 504 states and 1759 transitions. [2021-11-19 14:59:38,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 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 14:59:38,181 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 1759 transitions. [2021-11-19 14:59:38,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-19 14:59:38,186 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:59:38,186 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 14:59:38,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:59:38,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:59:38,400 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 14:59:38,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:59:38,401 INFO L85 PathProgramCache]: Analyzing trace with hash -2085079019, now seen corresponding path program 1 times [2021-11-19 14:59:38,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:59:38,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1455220491] [2021-11-19 14:59:38,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:59:38,401 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:59:38,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:59:38,402 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:59:38,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:59:38,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:59:38,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 14:59:38,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:59:38,757 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:59:38,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:59:38,877 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:59:38,878 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:59:38,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1455220491] [2021-11-19 14:59:38,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1455220491] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:59:38,878 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:59:38,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-19 14:59:38,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285805979] [2021-11-19 14:59:38,879 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:59:38,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:59:38,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:59:38,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:59:38,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:59:38,880 INFO L87 Difference]: Start difference. First operand 504 states and 1759 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 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 14:59:40,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:59:40,297 INFO L93 Difference]: Finished difference Result 1050 states and 3667 transitions. [2021-11-19 14:59:40,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 14:59:40,298 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 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 28 [2021-11-19 14:59:40,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:59:40,310 INFO L225 Difference]: With dead ends: 1050 [2021-11-19 14:59:40,311 INFO L226 Difference]: Without dead ends: 982 [2021-11-19 14:59:40,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=130, Unknown=0, NotChecked=0, Total=210 [2021-11-19 14:59:40,312 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 251 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:59:40,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 26 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-19 14:59:40,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2021-11-19 14:59:40,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 448. [2021-11-19 14:59:40,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 447 states have (on average 3.563758389261745) internal successors, (1593), 447 states have internal predecessors, (1593), 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 14:59:40,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 1593 transitions. [2021-11-19 14:59:40,342 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 1593 transitions. Word has length 28 [2021-11-19 14:59:40,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:59:40,342 INFO L470 AbstractCegarLoop]: Abstraction has 448 states and 1593 transitions. [2021-11-19 14:59:40,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 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 14:59:40,343 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 1593 transitions. [2021-11-19 14:59:40,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-19 14:59:40,345 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:59:40,345 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 14:59:40,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:59:40,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:59:40,558 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 14:59:40,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:59:40,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1106726945, now seen corresponding path program 2 times [2021-11-19 14:59:40,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:59:40,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [129789702] [2021-11-19 14:59:40,559 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:59:40,559 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:59:40,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:59:40,568 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:59:40,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 14:59:40,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:59:40,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:59:40,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 14:59:40,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:59:40,976 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:59:40,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:59:41,128 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:59:41,128 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:59:41,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [129789702] [2021-11-19 14:59:41,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [129789702] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:59:41,130 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:59:41,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-19 14:59:41,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113642916] [2021-11-19 14:59:41,130 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:59:41,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:59:41,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:59:41,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:59:41,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:59:41,132 INFO L87 Difference]: Start difference. First operand 448 states and 1593 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 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 14:59:42,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:59:42,507 INFO L93 Difference]: Finished difference Result 1426 states and 5202 transitions. [2021-11-19 14:59:42,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 14:59:42,509 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 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 28 [2021-11-19 14:59:42,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:59:42,524 INFO L225 Difference]: With dead ends: 1426 [2021-11-19 14:59:42,524 INFO L226 Difference]: Without dead ends: 1372 [2021-11-19 14:59:42,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=125, Unknown=0, NotChecked=0, Total=210 [2021-11-19 14:59:42,526 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 204 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:59:42,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 26 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-19 14:59:42,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2021-11-19 14:59:42,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 556. [2021-11-19 14:59:42,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 555 states have (on average 3.609009009009009) internal successors, (2003), 555 states have internal predecessors, (2003), 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 14:59:42,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 2003 transitions. [2021-11-19 14:59:42,569 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 2003 transitions. Word has length 28 [2021-11-19 14:59:42,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:59:42,570 INFO L470 AbstractCegarLoop]: Abstraction has 556 states and 2003 transitions. [2021-11-19 14:59:42,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 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 14:59:42,570 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 2003 transitions. [2021-11-19 14:59:42,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-19 14:59:42,573 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:59:42,573 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 14:59:42,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 14:59:42,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:59:42,787 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 14:59:42,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:59:42,788 INFO L85 PathProgramCache]: Analyzing trace with hash -940166033, now seen corresponding path program 3 times [2021-11-19 14:59:42,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:59:42,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [709578153] [2021-11-19 14:59:42,788 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 14:59:42,788 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:59:42,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:59:42,790 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:59:42,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 14:59:43,040 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-19 14:59:43,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:59:43,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 14:59:43,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:59:43,251 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:59:43,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:59:43,369 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:59:43,369 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:59:43,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [709578153] [2021-11-19 14:59:43,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [709578153] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:59:43,369 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:59:43,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-19 14:59:43,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353143255] [2021-11-19 14:59:43,370 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:59:43,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:59:43,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:59:43,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:59:43,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:59:43,371 INFO L87 Difference]: Start difference. First operand 556 states and 2003 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 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 14:59:44,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:59:44,761 INFO L93 Difference]: Finished difference Result 1442 states and 5176 transitions. [2021-11-19 14:59:44,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 14:59:44,762 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 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 28 [2021-11-19 14:59:44,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:59:44,775 INFO L225 Difference]: With dead ends: 1442 [2021-11-19 14:59:44,776 INFO L226 Difference]: Without dead ends: 1410 [2021-11-19 14:59:44,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:59:44,777 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 238 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:59:44,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [238 Valid, 29 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-19 14:59:44,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1410 states. [2021-11-19 14:59:44,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1410 to 456. [2021-11-19 14:59:44,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 455 states have (on average 3.556043956043956) internal successors, (1618), 455 states have internal predecessors, (1618), 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 14:59:44,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 1618 transitions. [2021-11-19 14:59:44,810 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 1618 transitions. Word has length 28 [2021-11-19 14:59:44,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:59:44,810 INFO L470 AbstractCegarLoop]: Abstraction has 456 states and 1618 transitions. [2021-11-19 14:59:44,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 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 14:59:44,811 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 1618 transitions. [2021-11-19 14:59:44,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-19 14:59:44,813 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:59:44,813 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 14:59:44,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 14:59:45,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:59:45,026 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 14:59:45,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:59:45,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1810411774, now seen corresponding path program 1 times [2021-11-19 14:59:45,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:59:45,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [226296206] [2021-11-19 14:59:45,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:59:45,028 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:59:45,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:59:45,028 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:59:45,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 14:59:45,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:59:45,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 14:59:45,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:59:45,415 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 14:59:45,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:59:45,612 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 14:59:45,612 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:59:45,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [226296206] [2021-11-19 14:59:45,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [226296206] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:59:45,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1907699135] [2021-11-19 14:59:45,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:59:45,613 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:59:45,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:59:45,614 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:59:45,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-19 14:59:45,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:59:45,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:59:45,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:59:46,089 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 14:59:46,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:59:46,314 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 14:59:46,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1907699135] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:59:46,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923627488] [2021-11-19 14:59:46,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:59:46,315 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:59:46,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:59:46,316 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:59:46,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-19 14:59:46,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:59:46,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:59:46,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:59:46,660 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:59:46,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:59:46,924 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 14:59:46,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923627488] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:59:46,924 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 14:59:46,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5, 5, 7, 7] total 28 [2021-11-19 14:59:46,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016886331] [2021-11-19 14:59:46,925 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 14:59:46,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-19 14:59:46,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:59:46,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-19 14:59:46,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=605, Unknown=0, NotChecked=0, Total=756 [2021-11-19 14:59:46,926 INFO L87 Difference]: Start difference. First operand 456 states and 1618 transitions. Second operand has 28 states, 28 states have (on average 4.0) internal successors, (112), 28 states have internal predecessors, (112), 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 15:00:03,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:00:03,515 INFO L93 Difference]: Finished difference Result 1928 states and 6842 transitions. [2021-11-19 15:00:03,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-11-19 15:00:03,517 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.0) internal successors, (112), 28 states have internal predecessors, (112), 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 28 [2021-11-19 15:00:03,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:00:03,534 INFO L225 Difference]: With dead ends: 1928 [2021-11-19 15:00:03,534 INFO L226 Difference]: Without dead ends: 1829 [2021-11-19 15:00:03,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2611 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=1630, Invalid=6560, Unknown=0, NotChecked=0, Total=8190 [2021-11-19 15:00:03,538 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 750 mSDsluCounter, 921 mSDsCounter, 0 mSdLazyCounter, 2347 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 2499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 2347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2021-11-19 15:00:03,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [750 Valid, 157 Invalid, 2499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 2347 Invalid, 0 Unknown, 0 Unchecked, 11.6s Time] [2021-11-19 15:00:03,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1829 states. [2021-11-19 15:00:03,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1829 to 689. [2021-11-19 15:00:03,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 688 states have (on average 3.8517441860465116) internal successors, (2650), 688 states have internal predecessors, (2650), 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 15:00:03,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 2650 transitions. [2021-11-19 15:00:03,606 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 2650 transitions. Word has length 28 [2021-11-19 15:00:03,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:00:03,606 INFO L470 AbstractCegarLoop]: Abstraction has 689 states and 2650 transitions. [2021-11-19 15:00:03,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.0) internal successors, (112), 28 states have internal predecessors, (112), 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 15:00:03,607 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 2650 transitions. [2021-11-19 15:00:03,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-19 15:00:03,610 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:00:03,610 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:00:03,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-19 15:00:03,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 15:00:04,026 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2021-11-19 15:00:04,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 15:00:04,225 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 15:00:04,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:00:04,225 INFO L85 PathProgramCache]: Analyzing trace with hash -302978431, now seen corresponding path program 4 times [2021-11-19 15:00:04,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:00:04,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [75202541] [2021-11-19 15:00:04,226 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 15:00:04,226 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:00:04,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:00:04,227 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:00:04,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 15:00:04,345 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 15:00:04,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:00:04,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 15:00:04,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:00:04,533 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-19 15:00:04,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:00:04,621 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-19 15:00:04,622 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:00:04,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [75202541] [2021-11-19 15:00:04,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [75202541] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:00:04,622 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:00:04,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-19 15:00:04,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646433934] [2021-11-19 15:00:04,622 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:00:04,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 15:00:04,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:00:04,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 15:00:04,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-19 15:00:04,623 INFO L87 Difference]: Start difference. First operand 689 states and 2650 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 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 15:00:05,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:00:05,949 INFO L93 Difference]: Finished difference Result 1517 states and 5853 transitions. [2021-11-19 15:00:05,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 15:00:05,951 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 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 31 [2021-11-19 15:00:05,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:00:05,965 INFO L225 Difference]: With dead ends: 1517 [2021-11-19 15:00:05,966 INFO L226 Difference]: Without dead ends: 1489 [2021-11-19 15:00:05,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2021-11-19 15:00:05,967 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 180 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:00:05,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 37 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-19 15:00:05,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1489 states. [2021-11-19 15:00:06,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1489 to 821. [2021-11-19 15:00:06,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 820 states have (on average 3.8780487804878048) internal successors, (3180), 820 states have internal predecessors, (3180), 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 15:00:06,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 3180 transitions. [2021-11-19 15:00:06,009 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 3180 transitions. Word has length 31 [2021-11-19 15:00:06,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:00:06,010 INFO L470 AbstractCegarLoop]: Abstraction has 821 states and 3180 transitions. [2021-11-19 15:00:06,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 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 15:00:06,010 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 3180 transitions. [2021-11-19 15:00:06,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-19 15:00:06,014 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:00:06,014 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:00:06,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 15:00:06,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:00:06,228 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 15:00:06,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:00:06,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1945095887, now seen corresponding path program 5 times [2021-11-19 15:00:06,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:00:06,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1663992021] [2021-11-19 15:00:06,229 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-19 15:00:06,230 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:00:06,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:00:06,231 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:00:06,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 15:00:06,416 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 15:00:06,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:00:06,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 15:00:06,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:00:06,676 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 15:00:06,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:00:06,843 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-19 15:00:06,843 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:00:06,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1663992021] [2021-11-19 15:00:06,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1663992021] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:00:06,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1513499402] [2021-11-19 15:00:06,844 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-19 15:00:06,844 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:00:06,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:00:06,847 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:00:06,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-19 15:00:11,321 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 15:00:11,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:00:11,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 15:00:11,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:00:11,626 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 15:00:11,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:00:11,997 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 15:00:11,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1513499402] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:00:11,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712915724] [2021-11-19 15:00:11,997 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-19 15:00:11,997 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:00:11,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:00:11,999 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:00:12,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-19 15:00:14,359 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 15:00:14,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:00:14,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:00:14,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:00:14,494 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-19 15:00:14,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:00:14,613 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-19 15:00:14,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712915724] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:00:14,613 INFO L186 FreeRefinementEngine]: Found 2 perfect and 4 imperfect interpolant sequences. [2021-11-19 15:00:14,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [8, 6, 6, 6] total 26 [2021-11-19 15:00:14,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161036362] [2021-11-19 15:00:14,614 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:00:14,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:00:14,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:00:14,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:00:14,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=531, Unknown=0, NotChecked=0, Total=650 [2021-11-19 15:00:14,615 INFO L87 Difference]: Start difference. First operand 821 states and 3180 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:00:16,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:00:16,004 INFO L93 Difference]: Finished difference Result 1399 states and 5355 transitions. [2021-11-19 15:00:16,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 15:00:16,010 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-19 15:00:16,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:00:16,025 INFO L225 Difference]: With dead ends: 1399 [2021-11-19 15:00:16,025 INFO L226 Difference]: Without dead ends: 1361 [2021-11-19 15:00:16,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=155, Invalid=657, Unknown=0, NotChecked=0, Total=812 [2021-11-19 15:00:16,027 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 123 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:00:16,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 34 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-19 15:00:16,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2021-11-19 15:00:16,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 625. [2021-11-19 15:00:16,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 624 states have (on average 3.7884615384615383) internal successors, (2364), 624 states have internal predecessors, (2364), 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 15:00:16,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 2364 transitions. [2021-11-19 15:00:16,064 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 2364 transitions. Word has length 31 [2021-11-19 15:00:16,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:00:16,065 INFO L470 AbstractCegarLoop]: Abstraction has 625 states and 2364 transitions. [2021-11-19 15:00:16,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:00:16,065 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 2364 transitions. [2021-11-19 15:00:16,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-19 15:00:16,068 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:00:16,069 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:00:16,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-19 15:00:16,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-19 15:00:16,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (16)] Ended with exit code 0 [2021-11-19 15:00:16,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 15:00:16,685 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 15:00:16,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:00:16,685 INFO L85 PathProgramCache]: Analyzing trace with hash -880275703, now seen corresponding path program 6 times [2021-11-19 15:00:16,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:00:16,686 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [379827898] [2021-11-19 15:00:16,686 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-19 15:00:16,686 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:00:16,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:00:16,687 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:00:16,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 15:00:16,939 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-11-19 15:00:16,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:00:16,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 15:00:16,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:00:17,145 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-19 15:00:17,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:00:17,305 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-19 15:00:17,305 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:00:17,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [379827898] [2021-11-19 15:00:17,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [379827898] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:00:17,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [729026786] [2021-11-19 15:00:17,306 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-19 15:00:17,306 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:00:17,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:00:17,307 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:00:17,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-19 15:00:17,748 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-11-19 15:00:17,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:00:17,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 15:00:17,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:00:17,876 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-19 15:00:17,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:00:17,964 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-19 15:00:17,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [729026786] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:00:17,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660028604] [2021-11-19 15:00:17,965 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-19 15:00:17,965 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:00:17,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:00:17,966 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:00:17,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-19 15:00:18,185 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-11-19 15:00:18,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:00:18,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:00:18,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:00:18,306 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-19 15:00:18,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:00:18,398 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-19 15:00:18,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660028604] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:00:18,398 INFO L186 FreeRefinementEngine]: Found 2 perfect and 4 imperfect interpolant sequences. [2021-11-19 15:00:18,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5, 5, 5, 5] total 18 [2021-11-19 15:00:18,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739052160] [2021-11-19 15:00:18,399 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:00:18,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 15:00:18,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:00:18,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 15:00:18,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-11-19 15:00:18,400 INFO L87 Difference]: Start difference. First operand 625 states and 2364 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 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 15:00:20,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:00:20,000 INFO L93 Difference]: Finished difference Result 703 states and 2750 transitions. [2021-11-19 15:00:20,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 15:00:20,001 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 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 31 [2021-11-19 15:00:20,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:00:20,008 INFO L225 Difference]: With dead ends: 703 [2021-11-19 15:00:20,008 INFO L226 Difference]: Without dead ends: 679 [2021-11-19 15:00:20,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2021-11-19 15:00:20,010 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 47 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-19 15:00:20,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 34 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-19 15:00:20,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2021-11-19 15:00:20,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 551. [2021-11-19 15:00:20,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 550 states have (on average 3.9272727272727272) internal successors, (2160), 550 states have internal predecessors, (2160), 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 15:00:20,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 2160 transitions. [2021-11-19 15:00:20,032 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 2160 transitions. Word has length 31 [2021-11-19 15:00:20,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:00:20,033 INFO L470 AbstractCegarLoop]: Abstraction has 551 states and 2160 transitions. [2021-11-19 15:00:20,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 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 15:00:20,033 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 2160 transitions. [2021-11-19 15:00:20,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-19 15:00:20,035 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:00:20,036 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:00:20,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-19 15:00:20,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-19 15:00:20,453 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2021-11-19 15:00:20,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 15:00:20,649 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 15:00:20,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:00:20,649 INFO L85 PathProgramCache]: Analyzing trace with hash -717614216, now seen corresponding path program 2 times [2021-11-19 15:00:20,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:00:20,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [471987278] [2021-11-19 15:00:20,650 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 15:00:20,650 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:00:20,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:00:20,651 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:00:20,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-19 15:00:20,960 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 15:00:20,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:00:20,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 15:00:20,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:00:21,239 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-19 15:00:21,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:00:21,398 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-19 15:00:21,398 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:00:21,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [471987278] [2021-11-19 15:00:21,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [471987278] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:00:21,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1086967019] [2021-11-19 15:00:21,398 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 15:00:21,398 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:00:21,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:00:21,400 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:00:21,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-11-19 15:00:21,766 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 15:00:21,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:00:21,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-19 15:00:21,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:00:22,083 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-19 15:00:22,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:00:22,326 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-19 15:00:22,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1086967019] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:00:22,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883517319] [2021-11-19 15:00:22,327 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 15:00:22,327 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:00:22,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:00:22,328 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:00:22,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-19 15:00:22,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 15:00:22,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:00:22,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 15:00:22,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:00:22,722 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-19 15:00:22,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:00:22,896 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-19 15:00:22,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883517319] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:00:22,896 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 15:00:22,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 7, 6] total 27 [2021-11-19 15:00:22,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299716658] [2021-11-19 15:00:22,897 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 15:00:22,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-19 15:00:22,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:00:22,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-19 15:00:22,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=543, Unknown=0, NotChecked=0, Total=702 [2021-11-19 15:00:22,899 INFO L87 Difference]: Start difference. First operand 551 states and 2160 transitions. Second operand has 27 states, 27 states have (on average 3.814814814814815) internal successors, (103), 27 states have internal predecessors, (103), 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 15:00:32,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:00:32,639 INFO L93 Difference]: Finished difference Result 2569 states and 9413 transitions. [2021-11-19 15:00:32,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-11-19 15:00:32,640 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.814814814814815) internal successors, (103), 27 states have internal predecessors, (103), 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 31 [2021-11-19 15:00:32,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:00:32,662 INFO L225 Difference]: With dead ends: 2569 [2021-11-19 15:00:32,663 INFO L226 Difference]: Without dead ends: 2477 [2021-11-19 15:00:32,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1573 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1407, Invalid=4599, Unknown=0, NotChecked=0, Total=6006 [2021-11-19 15:00:32,666 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 1079 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 1518 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1079 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 1777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 1518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2021-11-19 15:00:32,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1079 Valid, 144 Invalid, 1777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 1518 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2021-11-19 15:00:32,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2477 states. [2021-11-19 15:00:32,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2477 to 921. [2021-11-19 15:00:32,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 921 states, 920 states have (on average 3.8021739130434784) internal successors, (3498), 920 states have internal predecessors, (3498), 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 15:00:32,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 3498 transitions. [2021-11-19 15:00:32,720 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 3498 transitions. Word has length 31 [2021-11-19 15:00:32,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:00:32,721 INFO L470 AbstractCegarLoop]: Abstraction has 921 states and 3498 transitions. [2021-11-19 15:00:32,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.814814814814815) internal successors, (103), 27 states have internal predecessors, (103), 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 15:00:32,721 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 3498 transitions. [2021-11-19 15:00:32,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-19 15:00:32,725 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:00:32,725 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:00:32,743 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-11-19 15:00:32,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2021-11-19 15:00:33,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-19 15:00:33,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:00:33,340 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 15:00:33,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:00:33,340 INFO L85 PathProgramCache]: Analyzing trace with hash -816131491, now seen corresponding path program 1 times [2021-11-19 15:00:33,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:00:33,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2037999425] [2021-11-19 15:00:33,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:00:33,341 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:00:33,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:00:33,342 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:00:33,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d17ec1-3550-47dc-85d4-df810e6f2ece/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-19 15:00:37,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:00:37,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 59 conjunts are in the unsatisfiable core [2021-11-19 15:00:37,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:00:37,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2021-11-19 15:00:37,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 15:00:37,829 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 15:00:37,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-11-19 15:00:38,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:00:38,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:00:38,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:00:38,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:00:38,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:00:38,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:00:38,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:00:38,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:00:38,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:00:38,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:00:38,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:00:38,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:00:38,054 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:00:38,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:00:38,057 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:00:38,060 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:00:38,115 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:00:38,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 13 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 16 case distinctions, treesize of input 222 treesize of output 100 [2021-11-19 15:00:57,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 37 [2021-11-19 15:01:43,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:01:43,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:01:43,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:01:43,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:01:43,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:01:43,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:01:43,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:01:43,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:01:43,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:01:43,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:01:43,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:01:43,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:01:43,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:01:43,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:01:43,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:01:43,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:01:43,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:01:43,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:01:43,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:01:43,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:01:43,794 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:01:43,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:01:43,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:01:43,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:01:43,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:01:43,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:01:43,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:01:43,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:01:43,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:01:43,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:01:43,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:01:43,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:01:43,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:01:43,806 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:01:43,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:01:43,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:01:43,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:01:43,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:01:43,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:01:43,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:01:43,813 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:01:43,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:01:43,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:01:43,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:01:43,817 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:01:45,653 INFO L354 Elim1Store]: treesize reduction 2707, result has 9.3 percent of original size [2021-11-19 15:01:45,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 33 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 75 case distinctions, treesize of input 166 treesize of output 338 [2021-11-19 15:08:38,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:08:38,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:08:38,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:08:38,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:08:38,644 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:08:38,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:08:38,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:08:38,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:08:38,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:08:38,648 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:08:38,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:08:38,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:08:38,651 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:08:38,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:08:38,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:08:38,654 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:08:38,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:08:38,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:08:38,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:08:38,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:08:38,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:08:38,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:08:38,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:08:38,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:08:38,663 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:08:38,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:08:38,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:08:38,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:08:38,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:08:38,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:08:38,668 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:08:38,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:08:38,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:08:38,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:08:38,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:08:38,672 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:08:38,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:08:38,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:08:38,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:08:38,675 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:08:38,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:08:38,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:08:38,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:08:38,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:08:38,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:08:38,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:08:38,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:08:38,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:08:38,682 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:08:38,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:08:38,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:08:38,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:08:38,686 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:08:38,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:08:38,687 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:08:38,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:08:38,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:08:38,691 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:08:38,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:08:38,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:08:38,693 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:08:38,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:08:38,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:08:38,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:08:38,697 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:08:38,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:08:38,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:08:38,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:08:38,701 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:08:38,703 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:08:40,979 INFO L354 Elim1Store]: treesize reduction 2256, result has 9.9 percent of original size [2021-11-19 15:08:40,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 24 select indices, 24 select index equivalence classes, 40 disjoint index pairs (out of 276 index pairs), introduced 20 new quantified variables, introduced 260 case distinctions, treesize of input 830 treesize of output 770