./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-min-array.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_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/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_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/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_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/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 9abac63211b9980a3b9079d9eb140a85fbc6c5adec6517ed998cc9e140b19342 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:44:03,446 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:44:03,448 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:44:03,489 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:44:03,489 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:44:03,491 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:44:03,493 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:44:03,496 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:44:03,498 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:44:03,501 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:44:03,503 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:44:03,504 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:44:03,507 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:44:03,515 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:44:03,517 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:44:03,519 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:44:03,531 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:44:03,533 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:44:03,535 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:44:03,538 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:44:03,546 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:44:03,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:44:03,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:44:03,554 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:44:03,560 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:44:03,560 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:44:03,561 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:44:03,562 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:44:03,563 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:44:03,564 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:44:03,565 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:44:03,566 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:44:03,577 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:44:03,579 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:44:03,580 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:44:03,581 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:44:03,582 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:44:03,582 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:44:03,583 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:44:03,584 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:44:03,585 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:44:03,586 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 15:44:03,617 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:44:03,618 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:44:03,619 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:44:03,619 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:44:03,619 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:44:03,620 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:44:03,620 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:44:03,620 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 15:44:03,620 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:44:03,621 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:44:03,621 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 15:44:03,621 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 15:44:03,622 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:44:03,622 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 15:44:03,622 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 15:44:03,622 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 15:44:03,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:44:03,624 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 15:44:03,624 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 15:44:03,624 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 15:44:03,625 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:44:03,625 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:44:03,625 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:44:03,625 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:44:03,626 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:44:03,626 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 15:44:03,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:44:03,626 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:44:03,627 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:44:03,627 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:44:03,627 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:44:03,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:44:03,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:44:03,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:44:03,629 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:44:03,629 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 15:44:03,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 15:44:03,629 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:44:03,630 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:44:03,630 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:44:03,630 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_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9abac63211b9980a3b9079d9eb140a85fbc6c5adec6517ed998cc9e140b19342 [2021-11-19 15:44:03,939 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:44:03,976 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:44:03,979 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:44:03,980 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:44:03,981 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:44:03,983 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c [2021-11-19 15:44:04,061 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/data/9464cfd99/ac29f77788ee41bb8342f1f3032a81a0/FLAGbcccf3de4 [2021-11-19 15:44:04,675 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:44:04,676 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c [2021-11-19 15:44:04,689 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/data/9464cfd99/ac29f77788ee41bb8342f1f3032a81a0/FLAGbcccf3de4 [2021-11-19 15:44:05,023 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/data/9464cfd99/ac29f77788ee41bb8342f1f3032a81a0 [2021-11-19 15:44:05,028 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:44:05,030 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:44:05,031 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:44:05,032 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:44:05,035 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:44:05,036 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:44:05" (1/1) ... [2021-11-19 15:44:05,038 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c9d6dad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:44:05, skipping insertion in model container [2021-11-19 15:44:05,038 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:44:05" (1/1) ... [2021-11-19 15:44:05,046 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:44:05,070 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:44:05,248 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_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c[2553,2566] [2021-11-19 15:44:05,259 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:44:05,270 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 15:44:05,281 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1e1138ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:44:05, skipping insertion in model container [2021-11-19 15:44:05,282 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:44:05,283 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 15:44:05,285 INFO L158 Benchmark]: Toolchain (without parser) took 254.44ms. Allocated memory is still 88.1MB. Free memory was 57.7MB in the beginning and 48.4MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 15:44:05,288 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 88.1MB. Free memory was 56.3MB in the beginning and 56.2MB in the end (delta: 44.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 15:44:05,290 INFO L158 Benchmark]: CACSL2BoogieTranslator took 251.27ms. Allocated memory is still 88.1MB. Free memory was 57.5MB in the beginning and 48.4MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 15:44:05,294 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 88.1MB. Free memory was 56.3MB in the beginning and 56.2MB in the end (delta: 44.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 251.27ms. Allocated memory is still 88.1MB. Free memory was 57.5MB in the beginning and 48.4MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 109]: 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_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/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_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/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_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/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 9abac63211b9980a3b9079d9eb140a85fbc6c5adec6517ed998cc9e140b19342 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:44:07,958 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:44:07,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:44:08,031 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:44:08,031 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:44:08,037 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:44:08,040 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:44:08,046 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:44:08,050 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:44:08,060 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:44:08,062 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:44:08,064 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:44:08,065 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:44:08,068 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:44:08,070 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:44:08,076 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:44:08,078 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:44:08,079 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:44:08,082 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:44:08,092 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:44:08,094 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:44:08,096 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:44:08,100 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:44:08,102 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:44:08,113 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:44:08,114 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:44:08,114 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:44:08,117 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:44:08,117 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:44:08,118 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:44:08,119 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:44:08,120 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:44:08,121 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:44:08,123 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:44:08,125 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:44:08,125 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:44:08,127 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:44:08,127 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:44:08,127 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:44:08,130 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:44:08,131 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:44:08,137 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-19 15:44:08,201 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:44:08,202 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:44:08,203 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:44:08,204 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:44:08,204 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:44:08,204 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:44:08,205 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:44:08,205 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:44:08,205 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:44:08,205 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:44:08,209 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:44:08,209 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 15:44:08,209 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 15:44:08,210 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:44:08,210 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:44:08,210 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:44:08,211 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:44:08,211 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:44:08,211 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 15:44:08,211 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 15:44:08,212 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 15:44:08,212 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:44:08,212 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:44:08,212 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:44:08,213 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:44:08,213 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 15:44:08,213 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:44:08,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:44:08,214 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:44:08,214 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:44:08,215 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:44:08,215 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 15:44:08,215 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 15:44:08,215 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:44:08,216 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:44:08,217 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:44:08,217 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_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9abac63211b9980a3b9079d9eb140a85fbc6c5adec6517ed998cc9e140b19342 [2021-11-19 15:44:08,655 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:44:08,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:44:08,688 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:44:08,690 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:44:08,690 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:44:08,693 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c [2021-11-19 15:44:08,779 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/data/9b32a2347/74e3158f64ab4a0488f58e6436a54e97/FLAG141971bb3 [2021-11-19 15:44:09,491 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:44:09,492 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c [2021-11-19 15:44:09,504 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/data/9b32a2347/74e3158f64ab4a0488f58e6436a54e97/FLAG141971bb3 [2021-11-19 15:44:09,820 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/data/9b32a2347/74e3158f64ab4a0488f58e6436a54e97 [2021-11-19 15:44:09,823 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:44:09,825 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:44:09,827 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:44:09,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:44:09,831 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:44:09,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:44:09" (1/1) ... [2021-11-19 15:44:09,834 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@604bfbe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:44:09, skipping insertion in model container [2021-11-19 15:44:09,834 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:44:09" (1/1) ... [2021-11-19 15:44:09,844 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:44:09,866 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:44:10,109 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_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c[2553,2566] [2021-11-19 15:44:10,121 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:44:10,148 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 15:44:10,162 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:44:10,181 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_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c[2553,2566] [2021-11-19 15:44:10,186 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:44:10,196 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 15:44:10,238 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_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c[2553,2566] [2021-11-19 15:44:10,242 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:44:10,262 INFO L208 MainTranslator]: Completed translation [2021-11-19 15:44:10,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:44:10 WrapperNode [2021-11-19 15:44:10,262 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:44:10,264 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 15:44:10,264 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 15:44:10,264 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 15:44:10,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:44:10" (1/1) ... [2021-11-19 15:44:10,286 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:44:10" (1/1) ... [2021-11-19 15:44:10,314 INFO L137 Inliner]: procedures = 26, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 98 [2021-11-19 15:44:10,314 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 15:44:10,315 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 15:44:10,315 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 15:44:10,315 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 15:44:10,326 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:44:10" (1/1) ... [2021-11-19 15:44:10,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:44:10" (1/1) ... [2021-11-19 15:44:10,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:44:10" (1/1) ... [2021-11-19 15:44:10,333 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:44:10" (1/1) ... [2021-11-19 15:44:10,358 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:44:10" (1/1) ... [2021-11-19 15:44:10,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:44:10" (1/1) ... [2021-11-19 15:44:10,378 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:44:10" (1/1) ... [2021-11-19 15:44:10,395 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 15:44:10,396 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 15:44:10,396 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 15:44:10,397 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 15:44:10,398 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:44:10" (1/1) ... [2021-11-19 15:44:10,406 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:44:10,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:44:10,444 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 15:44:10,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 15:44:10,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 15:44:10,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 15:44:10,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 15:44:10,509 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 15:44:10,509 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-19 15:44:10,509 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-19 15:44:10,510 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-19 15:44:10,510 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-19 15:44:10,510 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-19 15:44:10,510 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-19 15:44:10,511 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-19 15:44:10,511 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-19 15:44:10,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 15:44:10,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 15:44:10,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 15:44:10,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 15:44:10,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 15:44:10,514 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 15:44:10,634 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 15:44:10,636 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 15:44:11,114 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 15:44:11,246 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 15:44:11,246 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-19 15:44:11,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:44:11 BoogieIcfgContainer [2021-11-19 15:44:11,250 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 15:44:11,252 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 15:44:11,252 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 15:44:11,256 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 15:44:11,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 03:44:09" (1/3) ... [2021-11-19 15:44:11,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40dcf795 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:44:11, skipping insertion in model container [2021-11-19 15:44:11,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:44:10" (2/3) ... [2021-11-19 15:44:11,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40dcf795 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:44:11, skipping insertion in model container [2021-11-19 15:44:11,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:44:11" (3/3) ... [2021-11-19 15:44:11,260 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-min-array.wvr.c [2021-11-19 15:44:11,267 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-19 15:44:11,267 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 15:44:11,267 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 15:44:11,268 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-19 15:44:11,355 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,360 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,361 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,361 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,361 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,361 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,364 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,365 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,365 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,365 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,367 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,367 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,367 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,368 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,368 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,369 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,369 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,370 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,370 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,371 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,371 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,371 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,371 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,372 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,372 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,373 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,373 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,374 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,376 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,377 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,378 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,385 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,385 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,385 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,386 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,386 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,386 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,387 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,387 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,388 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,388 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,389 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,389 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,389 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,390 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,390 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,391 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,391 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,392 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,392 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,393 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,394 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,394 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,394 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,395 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,395 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,395 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,396 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,398 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,398 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,399 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,399 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,400 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,400 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,400 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,401 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,401 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,401 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,402 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,402 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,403 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,404 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,407 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,408 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,408 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,409 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,409 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,411 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,411 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,412 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,412 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,413 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,413 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,414 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,418 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,433 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,434 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,434 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,435 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,435 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,436 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,437 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,437 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,437 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,438 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,438 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,439 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,439 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,439 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,440 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,440 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,440 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:44:11,443 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-11-19 15:44:11,500 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 15:44:11,510 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 15:44:11,510 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-19 15:44:11,532 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-19 15:44:11,550 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 148 places, 150 transitions, 324 flow [2021-11-19 15:44:11,556 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 148 places, 150 transitions, 324 flow [2021-11-19 15:44:11,565 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 148 places, 150 transitions, 324 flow [2021-11-19 15:44:11,727 INFO L129 PetriNetUnfolder]: 12/147 cut-off events. [2021-11-19 15:44:11,728 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-11-19 15:44:11,733 INFO L84 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 147 events. 12/147 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 91 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 109. Up to 2 conditions per place. [2021-11-19 15:44:11,740 INFO L116 LiptonReduction]: Number of co-enabled transitions 1320 [2021-11-19 15:44:33,271 INFO L131 LiptonReduction]: Checked pairs total: 1542 [2021-11-19 15:44:33,271 INFO L133 LiptonReduction]: Total number of compositions: 141 [2021-11-19 15:44:33,281 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 34 places, 28 transitions, 80 flow [2021-11-19 15:44:33,302 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 107 states, 106 states have (on average 3.0849056603773586) internal successors, (327), 106 states have internal predecessors, (327), 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 15:44:33,305 INFO L276 IsEmpty]: Start isEmpty. Operand has 107 states, 106 states have (on average 3.0849056603773586) internal successors, (327), 106 states have internal predecessors, (327), 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 15:44:33,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 15:44:33,315 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:44:33,316 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] [2021-11-19 15:44:33,317 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 15:44:33,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:44:33,323 INFO L85 PathProgramCache]: Analyzing trace with hash 765521128, now seen corresponding path program 1 times [2021-11-19 15:44:33,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:44:33,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2042102403] [2021-11-19 15:44:33,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:44:33,340 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:44:33,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:44:33,350 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:44:33,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 15:44:33,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:44:33,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 15:44:33,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:44:33,865 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 15:44:33,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:44:34,033 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 15:44:34,034 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:44:34,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2042102403] [2021-11-19 15:44:34,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2042102403] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:44:34,036 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:44:34,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-11-19 15:44:34,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482190585] [2021-11-19 15:44:34,039 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:44:34,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:44:34,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:44:34,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:44:34,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:44:34,083 INFO L87 Difference]: Start difference. First operand has 107 states, 106 states have (on average 3.0849056603773586) internal successors, (327), 106 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:44:34,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:44:34,300 INFO L93 Difference]: Finished difference Result 204 states and 632 transitions. [2021-11-19 15:44:34,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:44:34,302 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-19 15:44:34,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:44:34,319 INFO L225 Difference]: With dead ends: 204 [2021-11-19 15:44:34,319 INFO L226 Difference]: Without dead ends: 197 [2021-11-19 15:44:34,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:44:34,325 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 1 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:44:34,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 9 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 15:44:34,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-11-19 15:44:34,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2021-11-19 15:44:34,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 3.13265306122449) internal successors, (614), 196 states have internal predecessors, (614), 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 15:44:34,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 614 transitions. [2021-11-19 15:44:34,441 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 614 transitions. Word has length 20 [2021-11-19 15:44:34,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:44:34,442 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 614 transitions. [2021-11-19 15:44:34,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:44:34,444 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 614 transitions. [2021-11-19 15:44:34,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 15:44:34,448 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:44:34,448 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:44:34,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 15:44:34,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:44:34,672 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 15:44:34,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:44:34,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1199589151, now seen corresponding path program 1 times [2021-11-19 15:44:34,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:44:34,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1228431533] [2021-11-19 15:44:34,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:44:34,675 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:44:34,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:44:34,676 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:44:34,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 15:44:34,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:44:34,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 15:44:34,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:44:34,984 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 15:44:34,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:44:35,100 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 15:44:35,100 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:44:35,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1228431533] [2021-11-19 15:44:35,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1228431533] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:44:35,102 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:44:35,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-19 15:44:35,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634899131] [2021-11-19 15:44:35,103 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:44:35,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 15:44:35,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:44:35,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 15:44:35,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 15:44:35,110 INFO L87 Difference]: Start difference. First operand 197 states and 614 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 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 15:44:35,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:44:35,339 INFO L93 Difference]: Finished difference Result 173 states and 548 transitions. [2021-11-19 15:44:35,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:44:35,340 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-19 15:44:35,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:44:35,343 INFO L225 Difference]: With dead ends: 173 [2021-11-19 15:44:35,344 INFO L226 Difference]: Without dead ends: 173 [2021-11-19 15:44:35,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 15:44:35,346 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 65 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:44:35,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 7 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 15:44:35,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-11-19 15:44:35,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 133. [2021-11-19 15:44:35,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 3.121212121212121) internal successors, (412), 132 states have internal predecessors, (412), 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 15:44:35,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 412 transitions. [2021-11-19 15:44:35,366 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 412 transitions. Word has length 21 [2021-11-19 15:44:35,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:44:35,367 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 412 transitions. [2021-11-19 15:44:35,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 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 15:44:35,367 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 412 transitions. [2021-11-19 15:44:35,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 15:44:35,370 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:44:35,370 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:44:35,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 15:44:35,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:44:35,584 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 15:44:35,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:44:35,585 INFO L85 PathProgramCache]: Analyzing trace with hash -486138609, now seen corresponding path program 1 times [2021-11-19 15:44:35,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:44:35,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [80887498] [2021-11-19 15:44:35,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:44:35,586 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:44:35,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:44:35,591 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:44:35,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 15:44:35,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:44:35,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-19 15:44:35,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:44:35,986 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 15:44:35,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:44:36,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:44:36,275 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:44:36,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [80887498] [2021-11-19 15:44:36,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [80887498] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:44:36,275 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:44:36,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2021-11-19 15:44:36,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032225849] [2021-11-19 15:44:36,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:44:36,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 15:44:36,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:44:36,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 15:44:36,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-19 15:44:36,277 INFO L87 Difference]: Start difference. First operand 133 states and 412 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:44:36,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:44:36,674 INFO L93 Difference]: Finished difference Result 139 states and 433 transitions. [2021-11-19 15:44:36,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:44:36,675 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-19 15:44:36,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:44:36,677 INFO L225 Difference]: With dead ends: 139 [2021-11-19 15:44:36,677 INFO L226 Difference]: Without dead ends: 139 [2021-11-19 15:44:36,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:44:36,680 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 53 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 15:44:36,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 7 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 15:44:36,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-11-19 15:44:36,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2021-11-19 15:44:36,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 3.13768115942029) internal successors, (433), 138 states have internal predecessors, (433), 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 15:44:36,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 433 transitions. [2021-11-19 15:44:36,696 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 433 transitions. Word has length 21 [2021-11-19 15:44:36,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:44:36,696 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 433 transitions. [2021-11-19 15:44:36,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:44:36,697 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 433 transitions. [2021-11-19 15:44:36,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 15:44:36,699 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:44:36,700 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:44:36,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 15:44:36,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:44:36,914 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 15:44:36,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:44:36,914 INFO L85 PathProgramCache]: Analyzing trace with hash 2126193589, now seen corresponding path program 2 times [2021-11-19 15:44:36,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:44:36,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [69941351] [2021-11-19 15:44:36,915 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 15:44:36,916 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:44:36,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:44:36,921 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:44:36,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 15:44:37,050 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-19 15:44:37,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:44:37,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-19 15:44:37,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:44:37,148 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 15:44:37,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:44:37,356 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 15:44:37,356 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:44:37,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [69941351] [2021-11-19 15:44:37,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [69941351] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:44:37,357 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:44:37,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 6] imperfect sequences [] total 7 [2021-11-19 15:44:37,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246754507] [2021-11-19 15:44:37,363 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:44:37,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 15:44:37,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:44:37,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 15:44:37,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 15:44:37,365 INFO L87 Difference]: Start difference. First operand 139 states and 433 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 15:44:37,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:44:37,993 INFO L93 Difference]: Finished difference Result 256 states and 796 transitions. [2021-11-19 15:44:37,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 15:44:37,994 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 21 [2021-11-19 15:44:37,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:44:37,997 INFO L225 Difference]: With dead ends: 256 [2021-11-19 15:44:37,998 INFO L226 Difference]: Without dead ends: 256 [2021-11-19 15:44:37,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-19 15:44:37,999 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 58 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 15:44:38,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 18 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 15:44:38,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-11-19 15:44:38,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 174. [2021-11-19 15:44:38,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 3.2890173410404624) internal successors, (569), 173 states have internal predecessors, (569), 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 15:44:38,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 569 transitions. [2021-11-19 15:44:38,018 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 569 transitions. Word has length 21 [2021-11-19 15:44:38,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:44:38,018 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 569 transitions. [2021-11-19 15:44:38,019 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 15:44:38,019 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 569 transitions. [2021-11-19 15:44:38,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-19 15:44:38,022 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:44:38,022 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 15:44:38,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 15:44:38,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:44:38,251 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 15:44:38,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:44:38,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1889185545, now seen corresponding path program 1 times [2021-11-19 15:44:38,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:44:38,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1713383793] [2021-11-19 15:44:38,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:44:38,262 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:44:38,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:44:38,263 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:44:38,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 15:44:38,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:44:38,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-19 15:44:38,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:44:38,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 15:44:38,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:44:39,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 15:44:39,080 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:44:39,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1713383793] [2021-11-19 15:44:39,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1713383793] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:44:39,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1363977522] [2021-11-19 15:44:39,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:44:39,082 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:44:39,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:44:39,086 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:44:39,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-19 15:44:39,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:44:39,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 15:44:39,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:44:39,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 15:44:39,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:44:40,119 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 15:44:40,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1363977522] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:44:40,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303666117] [2021-11-19 15:44:40,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:44:40,120 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:44:40,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:44:40,122 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:44:40,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-19 15:44:40,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:44:40,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 15:44:40,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:44:40,771 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 15:44:40,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:44:41,582 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 15:44:41,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303666117] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:44:41,582 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 15:44:41,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 8, 8] total 33 [2021-11-19 15:44:41,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561155047] [2021-11-19 15:44:41,583 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 15:44:41,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-19 15:44:41,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:44:41,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-19 15:44:41,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=804, Unknown=0, NotChecked=0, Total=1056 [2021-11-19 15:44:41,586 INFO L87 Difference]: Start difference. First operand 174 states and 569 transitions. Second operand has 33 states, 33 states have (on average 2.757575757575758) internal successors, (91), 33 states have internal predecessors, (91), 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 15:44:46,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:44:46,160 INFO L93 Difference]: Finished difference Result 834 states and 2475 transitions. [2021-11-19 15:44:46,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-19 15:44:46,161 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.757575757575758) internal successors, (91), 33 states have internal predecessors, (91), 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 15:44:46,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:44:46,171 INFO L225 Difference]: With dead ends: 834 [2021-11-19 15:44:46,171 INFO L226 Difference]: Without dead ends: 834 [2021-11-19 15:44:46,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 844 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=934, Invalid=2606, Unknown=0, NotChecked=0, Total=3540 [2021-11-19 15:44:46,177 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 731 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-19 15:44:46,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [731 Valid, 70 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-19 15:44:46,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2021-11-19 15:44:46,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 290. [2021-11-19 15:44:46,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 3.3910034602076125) internal successors, (980), 289 states have internal predecessors, (980), 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 15:44:46,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 980 transitions. [2021-11-19 15:44:46,228 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 980 transitions. Word has length 22 [2021-11-19 15:44:46,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:44:46,229 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 980 transitions. [2021-11-19 15:44:46,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.757575757575758) internal successors, (91), 33 states have internal predecessors, (91), 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 15:44:46,230 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 980 transitions. [2021-11-19 15:44:46,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-19 15:44:46,233 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:44:46,233 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 15:44:46,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-19 15:44:46,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 15:44:46,660 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-19 15:44:46,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:44:46,837 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 15:44:46,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:44:46,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1639238112, now seen corresponding path program 1 times [2021-11-19 15:44:46,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:44:46,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [335690963] [2021-11-19 15:44:46,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:44:46,838 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:44:46,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:44:46,840 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:44:46,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 15:44:46,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:44:46,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-19 15:44:46,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:44:48,365 INFO L354 Elim1Store]: treesize reduction 234, result has 14.9 percent of original size [2021-11-19 15:44:48,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 213 treesize of output 115 [2021-11-19 15:44:53,276 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 15:44:53,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:44:54,111 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-11-19 15:44:54,111 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 285 treesize of output 123 [2021-11-19 15:46:36,302 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 15:46:36,302 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:46:36,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [335690963] [2021-11-19 15:46:36,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [335690963] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:46:36,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1433233524] [2021-11-19 15:46:36,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:46:36,303 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:46:36,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:46:36,314 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:46:36,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-19 15:46:36,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:46:36,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-19 15:46:36,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:46:36,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:36,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:36,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:36,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:36,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:36,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 15:46:36,867 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 44 treesize of output 53 [2021-11-19 15:46:39,601 INFO L354 Elim1Store]: treesize reduction 815, result has 6.5 percent of original size [2021-11-19 15:46:39,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 13 case distinctions, treesize of input 75 treesize of output 95 [2021-11-19 15:49:33,329 WARN L227 SmtUtils]: Spent 2.74m on a formula simplification. DAG size of input: 344 DAG size of output: 120 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 15:49:33,330 INFO L354 Elim1Store]: treesize reduction 1534, result has 21.3 percent of original size [2021-11-19 15:49:33,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 39 case distinctions, treesize of input 113 treesize of output 468 [2021-11-19 15:54:31,349 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-11-19 15:54:31,350 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-11-19 15:54:31,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381228198] [2021-11-19 15:54:31,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:54:31,351 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:54:31,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:54:31,360 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:54:31,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-11-19 15:54:31,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-19 15:54:31,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:54:31,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-19 15:54:31,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:54:31,780 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-11-19 15:54:31,780 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:54:31,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-11-19 15:54:31,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082959995] [2021-11-19 15:54:31,781 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 15:54:31,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 15:54:31,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:54:31,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 15:54:31,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2021-11-19 15:54:31,782 INFO L87 Difference]: Start difference. First operand 290 states and 980 transitions. Second operand has 16 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 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 15:54:31,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2021-11-19 15:54:31,784 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:54:31,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:54:31,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-19 15:54:31,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-19 15:54:32,198 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-19 15:54:32,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:54:32,387 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:312) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:158) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertCodeBlock(IncrementalHoareTripleChecker.java:435) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:278) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:284) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.releaseLock(ChainingHoareTripleChecker.java:425) at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1655) at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:658) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.releaseLock(ChainingHoareTripleChecker.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:199) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:885) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:442) at java.base/java.io.OutputStream.write(OutputStream.java:157) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:156) ... 37 more [2021-11-19 15:54:32,389 INFO L158 Benchmark]: Toolchain (without parser) took 622564.59ms. Allocated memory was 62.9MB in the beginning and 109.1MB in the end (delta: 46.1MB). Free memory was 42.1MB in the beginning and 52.8MB in the end (delta: -10.8MB). Peak memory consumption was 35.2MB. Max. memory is 16.1GB. [2021-11-19 15:54:32,390 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 62.9MB. Free memory was 43.6MB in the beginning and 43.5MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 15:54:32,390 INFO L158 Benchmark]: CACSL2BoogieTranslator took 436.11ms. Allocated memory is still 62.9MB. Free memory was 41.9MB in the beginning and 42.0MB in the end (delta: -41.8kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 15:54:32,391 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.58ms. Allocated memory is still 62.9MB. Free memory was 41.7MB in the beginning and 40.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 15:54:32,391 INFO L158 Benchmark]: Boogie Preprocessor took 80.42ms. Allocated memory is still 62.9MB. Free memory was 40.1MB in the beginning and 38.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 15:54:32,391 INFO L158 Benchmark]: RCFGBuilder took 853.61ms. Allocated memory was 62.9MB in the beginning and 81.8MB in the end (delta: 18.9MB). Free memory was 38.4MB in the beginning and 53.5MB in the end (delta: -15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-19 15:54:32,392 INFO L158 Benchmark]: TraceAbstraction took 621136.81ms. Allocated memory was 81.8MB in the beginning and 109.1MB in the end (delta: 27.3MB). Free memory was 52.7MB in the beginning and 52.8MB in the end (delta: -150.8kB). Peak memory consumption was 26.0MB. Max. memory is 16.1GB. [2021-11-19 15:54:32,393 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 62.9MB. Free memory was 43.6MB in the beginning and 43.5MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 436.11ms. Allocated memory is still 62.9MB. Free memory was 41.9MB in the beginning and 42.0MB in the end (delta: -41.8kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.58ms. Allocated memory is still 62.9MB. Free memory was 41.7MB in the beginning and 40.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 80.42ms. Allocated memory is still 62.9MB. Free memory was 40.1MB in the beginning and 38.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 853.61ms. Allocated memory was 62.9MB in the beginning and 81.8MB in the end (delta: 18.9MB). Free memory was 38.4MB in the beginning and 53.5MB in the end (delta: -15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 621136.81ms. Allocated memory was 81.8MB in the beginning and 109.1MB in the end (delta: 27.3MB). Free memory was 52.7MB in the beginning and 52.8MB in the end (delta: -150.8kB). Peak memory consumption was 26.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 21.7s, 148 PlacesBefore, 34 PlacesAfterwards, 150 TransitionsBefore, 28 TransitionsAfterwards, 1320 CoEnabledTransitionPairs, 7 FixpointIterations, 89 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 11 TrivialYvCompositions, 6 ConcurrentYvCompositions, 8 ChoiceCompositions, 141 TotalNumberOfCompositions, 1542 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1432, positive: 1404, positive conditional: 0, positive unconditional: 1404, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 873, positive: 865, positive conditional: 0, positive unconditional: 865, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 873, positive: 865, positive conditional: 0, positive unconditional: 865, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 8, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 462, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 462, negative conditional: 0, negative unconditional: 462, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1432, positive: 539, positive conditional: 0, positive unconditional: 539, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 873, unknown conditional: 0, unknown unconditional: 873] , Statistics on independence cache: Total cache size (in pairs): 65, Positive cache size: 63, Positive conditional cache size: 0, Positive unconditional cache size: 63, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:312) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0751e0c-aa39-41c0-a1e4-f7d2f9ddeeb3/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken