./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a1648913be4b4e88120f8ece4966a58804b334c451c87254dfc42f8e396f396f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:34:31,332 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:34:31,335 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:34:31,391 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:34:31,392 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:34:31,396 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:34:31,398 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:34:31,401 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:34:31,404 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:34:31,410 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:34:31,411 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:34:31,412 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:34:31,413 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:34:31,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:34:31,418 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:34:31,422 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:34:31,424 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:34:31,425 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:34:31,427 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:34:31,435 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:34:31,437 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:34:31,438 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:34:31,442 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:34:31,443 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:34:31,452 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:34:31,453 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:34:31,453 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:34:31,455 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:34:31,456 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:34:31,458 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:34:31,458 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:34:31,459 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:34:31,462 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:34:31,463 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:34:31,465 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:34:31,465 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:34:31,466 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:34:31,467 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:34:31,467 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:34:31,469 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:34:31,470 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:34:31,471 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:34:31,520 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:34:31,520 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:34:31,522 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:34:31,523 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:34:31,523 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:34:31,523 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:34:31,523 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:34:31,524 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:34:31,524 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:34:31,524 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:34:31,525 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:34:31,525 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:34:31,526 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:34:31,526 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:34:31,526 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:34:31,527 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:34:31,527 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:34:31,527 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:34:31,528 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:34:31,528 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:34:31,528 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:34:31,528 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:34:31,529 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:34:31,529 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:34:31,529 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:34:31,530 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:34:31,530 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:34:31,530 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:34:31,530 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:34:31,532 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:34:31,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:34:31,533 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:34:31,533 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:34:31,533 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:34:31,533 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:34:31,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:34:31,534 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:34:31,534 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:34:31,534 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:34:31,535 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_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a1648913be4b4e88120f8ece4966a58804b334c451c87254dfc42f8e396f396f [2021-11-07 01:34:31,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:34:31,939 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:34:31,942 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:34:31,943 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:34:31,944 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:34:31,945 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c [2021-11-07 01:34:32,022 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/data/849d23d69/4b05c1778eb04658bf40d7d91d6eaa85/FLAGa270b5034 [2021-11-07 01:34:32,629 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:34:32,629 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c [2021-11-07 01:34:32,637 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/data/849d23d69/4b05c1778eb04658bf40d7d91d6eaa85/FLAGa270b5034 [2021-11-07 01:34:32,959 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/data/849d23d69/4b05c1778eb04658bf40d7d91d6eaa85 [2021-11-07 01:34:32,961 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:34:32,963 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:34:32,968 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:34:32,968 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:34:32,972 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:34:32,972 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:34:32" (1/1) ... [2021-11-07 01:34:32,974 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d50176d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:32, skipping insertion in model container [2021-11-07 01:34:32,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:34:32" (1/1) ... [2021-11-07 01:34:32,981 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:34:33,002 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:34:33,234 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c[3271,3284] [2021-11-07 01:34:33,242 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:34:33,253 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 01:34:33,253 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@23274759 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:33, skipping insertion in model container [2021-11-07 01:34:33,254 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:34:33,254 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:34:33,257 INFO L168 Benchmark]: Toolchain (without parser) took 292.48 ms. Allocated memory was 79.7 MB in the beginning and 102.8 MB in the end (delta: 23.1 MB). Free memory was 41.5 MB in the beginning and 80.0 MB in the end (delta: -38.5 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:34:33,258 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 79.7 MB. Free memory is still 58.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:34:33,259 INFO L168 Benchmark]: CACSL2BoogieTranslator took 286.13 ms. Allocated memory was 79.7 MB in the beginning and 102.8 MB in the end (delta: 23.1 MB). Free memory was 41.4 MB in the beginning and 80.0 MB in the end (delta: -38.7 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:34:33,261 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 79.7 MB. Free memory is still 58.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 286.13 ms. Allocated memory was 79.7 MB in the beginning and 102.8 MB in the end (delta: 23.1 MB). Free memory was 41.4 MB in the beginning and 80.0 MB in the end (delta: -38.7 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 143]: 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_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a1648913be4b4e88120f8ece4966a58804b334c451c87254dfc42f8e396f396f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:34:35,682 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:34:35,685 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:34:35,731 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:34:35,732 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:34:35,737 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:34:35,739 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:34:35,747 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:34:35,751 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:34:35,759 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:34:35,761 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:34:35,763 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:34:35,763 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:34:35,766 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:34:35,769 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:34:35,774 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:34:35,776 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:34:35,777 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:34:35,779 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:34:35,788 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:34:35,791 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:34:35,792 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:34:35,796 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:34:35,799 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:34:35,809 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:34:35,810 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:34:35,810 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:34:35,812 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:34:35,813 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:34:35,814 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:34:35,815 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:34:35,816 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:34:35,818 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:34:35,819 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:34:35,821 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:34:35,821 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:34:35,822 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:34:35,822 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:34:35,823 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:34:35,824 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:34:35,825 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:34:35,826 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:34:35,872 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:34:35,872 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:34:35,873 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:34:35,874 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:34:35,874 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:34:35,874 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:34:35,874 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:34:35,874 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:34:35,875 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:34:35,876 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:34:35,877 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:34:35,877 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:34:35,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:34:35,878 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:34:35,878 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:34:35,878 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:34:35,878 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:34:35,879 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:34:35,879 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:34:35,879 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:34:35,879 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:34:35,879 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:34:35,880 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:34:35,880 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:34:35,880 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:34:35,880 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:34:35,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:34:35,881 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:34:35,881 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:34:35,881 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:34:35,881 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:34:35,881 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:34:35,882 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:34:35,882 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:34:35,882 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:34:35,883 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_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a1648913be4b4e88120f8ece4966a58804b334c451c87254dfc42f8e396f396f [2021-11-07 01:34:36,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:34:36,323 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:34:36,326 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:34:36,328 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:34:36,328 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:34:36,332 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c [2021-11-07 01:34:36,416 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/data/389ad9f1a/5067ee378da5423faab09c7b337ffbf2/FLAG2846cf87c [2021-11-07 01:34:37,067 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:34:37,068 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c [2021-11-07 01:34:37,078 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/data/389ad9f1a/5067ee378da5423faab09c7b337ffbf2/FLAG2846cf87c [2021-11-07 01:34:37,408 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/data/389ad9f1a/5067ee378da5423faab09c7b337ffbf2 [2021-11-07 01:34:37,410 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:34:37,412 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:34:37,414 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:34:37,414 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:34:37,417 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:34:37,418 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:34:37" (1/1) ... [2021-11-07 01:34:37,420 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63a8ddc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:37, skipping insertion in model container [2021-11-07 01:34:37,420 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:34:37" (1/1) ... [2021-11-07 01:34:37,429 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:34:37,469 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:34:37,649 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c[3271,3284] [2021-11-07 01:34:37,659 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:34:37,680 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:34:37,696 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:34:37,795 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c[3271,3284] [2021-11-07 01:34:37,813 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:34:37,820 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:34:37,847 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c[3271,3284] [2021-11-07 01:34:37,851 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:34:37,868 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:34:37,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:37 WrapperNode [2021-11-07 01:34:37,869 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:34:37,871 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:34:37,871 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:34:37,871 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:34:37,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:37" (1/1) ... [2021-11-07 01:34:37,903 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:37" (1/1) ... [2021-11-07 01:34:37,947 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:34:37,948 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:34:37,948 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:34:37,949 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:34:37,958 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:37" (1/1) ... [2021-11-07 01:34:37,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:37" (1/1) ... [2021-11-07 01:34:37,980 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:37" (1/1) ... [2021-11-07 01:34:37,980 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:37" (1/1) ... [2021-11-07 01:34:37,997 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:37" (1/1) ... [2021-11-07 01:34:38,019 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:37" (1/1) ... [2021-11-07 01:34:38,021 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:37" (1/1) ... [2021-11-07 01:34:38,025 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:34:38,026 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:34:38,026 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:34:38,026 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:34:38,027 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:37" (1/1) ... [2021-11-07 01:34:38,044 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:34:38,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:34:38,075 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:34:38,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:34:38,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:34:38,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:34:38,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:34:38,125 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-07 01:34:38,125 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-07 01:34:38,125 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-07 01:34:38,125 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-07 01:34:38,126 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-07 01:34:38,126 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-07 01:34:38,126 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-11-07 01:34:38,126 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-11-07 01:34:38,126 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-11-07 01:34:38,126 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-11-07 01:34:38,127 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-07 01:34:38,127 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-07 01:34:38,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:34:38,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:34:38,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:34:38,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:34:38,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:34:38,129 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-07 01:34:39,443 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:34:39,443 INFO L299 CfgBuilder]: Removed 23 assume(true) statements. [2021-11-07 01:34:39,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:34:39 BoogieIcfgContainer [2021-11-07 01:34:39,445 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:34:39,446 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:34:39,446 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:34:39,449 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:34:39,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:34:37" (1/3) ... [2021-11-07 01:34:39,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@452d0cba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:34:39, skipping insertion in model container [2021-11-07 01:34:39,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:37" (2/3) ... [2021-11-07 01:34:39,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@452d0cba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:34:39, skipping insertion in model container [2021-11-07 01:34:39,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:34:39" (3/3) ... [2021-11-07 01:34:39,452 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-min-max-inc-dec.wvr.c [2021-11-07 01:34:39,460 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-07 01:34:39,460 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:34:39,460 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:34:39,461 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-07 01:34:39,504 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,504 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,505 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,505 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,505 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,506 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,506 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,506 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,507 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,522 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,523 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,523 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,524 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,524 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,524 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,525 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,525 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,525 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,526 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,526 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,526 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,526 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,527 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,527 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,527 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,528 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,528 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,528 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,528 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,529 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,529 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,529 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,530 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork4_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,530 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork4_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,530 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork4_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,531 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork4_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,531 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork4_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,531 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork4_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,532 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork4_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,532 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork4_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,532 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,532 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,533 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,533 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,533 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork4_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,533 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork4_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,534 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork4_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,534 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork4_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,534 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork4_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,535 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork4_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,535 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork4_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,535 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork4_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,535 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork4_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,536 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork4_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,536 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork4_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,536 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork4_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,537 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork4_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,537 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork4_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,537 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork4_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,537 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork4_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,538 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork4_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,538 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork4_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,538 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork4_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,538 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork4_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,539 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,539 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,539 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,540 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,540 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,540 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,541 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,541 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,541 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,541 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,542 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,542 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,542 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,542 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,543 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,543 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,543 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,544 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,544 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,544 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,544 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,544 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,545 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,545 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,545 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,546 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,546 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,546 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,546 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,546 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,547 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,547 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,547 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,548 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,548 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,548 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,548 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,549 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,549 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,549 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,550 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,550 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,550 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,550 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,550 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,551 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,551 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,551 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,551 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,552 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,552 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,552 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,552 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,553 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,553 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,553 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,553 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,554 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,554 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,554 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,554 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,555 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,555 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,555 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,555 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,556 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,556 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,556 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,559 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,559 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,571 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,572 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,572 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,572 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,572 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,572 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,573 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,573 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,573 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,575 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,576 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,576 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,576 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,576 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,576 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,577 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,577 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,579 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,579 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,579 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,579 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,580 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,580 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,580 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,580 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,580 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,583 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork4_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,583 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork4_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,583 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork4_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,583 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork4_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,584 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork4_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,584 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,584 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork4_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,584 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:34:39,595 INFO L148 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2021-11-07 01:34:39,641 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:34:39,648 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:34:39,648 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-07 01:34:39,667 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-07 01:34:39,678 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 181 places, 179 transitions, 398 flow [2021-11-07 01:34:39,681 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 181 places, 179 transitions, 398 flow [2021-11-07 01:34:39,683 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 181 places, 179 transitions, 398 flow [2021-11-07 01:34:39,801 INFO L129 PetriNetUnfolder]: 14/174 cut-off events. [2021-11-07 01:34:39,801 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-11-07 01:34:39,808 INFO L84 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 174 events. 14/174 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 128 event pairs, 0 based on Foata normal form. 0/159 useless extension candidates. Maximal degree in co-relation 140. Up to 2 conditions per place. [2021-11-07 01:34:39,815 INFO L116 LiptonReduction]: Number of co-enabled transitions 3806 [2021-11-07 01:35:16,829 WARN L207 SmtUtils]: Spent 6.36 s on a formula simplification. DAG size of input: 166 DAG size of output: 161 [2021-11-07 01:35:19,681 INFO L131 LiptonReduction]: Checked pairs total: 6183 [2021-11-07 01:35:19,681 INFO L133 LiptonReduction]: Total number of compositions: 156 [2021-11-07 01:35:19,692 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 55 places, 44 transitions, 128 flow [2021-11-07 01:35:19,805 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1201 states, 1200 states have (on average 4.693333333333333) internal successors, (5632), 1200 states have internal predecessors, (5632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:19,814 INFO L276 IsEmpty]: Start isEmpty. Operand has 1201 states, 1200 states have (on average 4.693333333333333) internal successors, (5632), 1200 states have internal predecessors, (5632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:19,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-07 01:35:19,844 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:19,845 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:35:19,846 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-11-07 01:35:19,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:19,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1179337667, now seen corresponding path program 1 times [2021-11-07 01:35:19,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:19,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [601933696] [2021-11-07 01:35:19,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:19,867 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:19,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:19,871 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:19,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:35:20,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:20,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:35:20,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:20,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:35:20,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:20,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:35:20,638 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:35:20,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [601933696] [2021-11-07 01:35:20,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [601933696] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:35:20,639 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:35:20,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 01:35:20,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604825372] [2021-11-07 01:35:20,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:35:20,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:35:20,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:35:20,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:35:20,696 INFO L87 Difference]: Start difference. First operand has 1201 states, 1200 states have (on average 4.693333333333333) internal successors, (5632), 1200 states have internal predecessors, (5632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:20,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:35:20,932 INFO L93 Difference]: Finished difference Result 1485 states and 6994 transitions. [2021-11-07 01:35:20,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:35:20,934 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 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 33 [2021-11-07 01:35:20,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:35:20,969 INFO L225 Difference]: With dead ends: 1485 [2021-11-07 01:35:20,970 INFO L226 Difference]: Without dead ends: 1485 [2021-11-07 01:35:20,971 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:35:20,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1485 states. [2021-11-07 01:35:21,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1485 to 1485. [2021-11-07 01:35:21,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1485 states, 1484 states have (on average 4.712938005390836) internal successors, (6994), 1484 states have internal predecessors, (6994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:21,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 6994 transitions. [2021-11-07 01:35:21,171 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 6994 transitions. Word has length 33 [2021-11-07 01:35:21,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:35:21,172 INFO L470 AbstractCegarLoop]: Abstraction has 1485 states and 6994 transitions. [2021-11-07 01:35:21,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:21,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 6994 transitions. [2021-11-07 01:35:21,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-07 01:35:21,182 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:21,183 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:35:21,196 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-07 01:35:21,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:35:21,396 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-11-07 01:35:21,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:21,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1653715698, now seen corresponding path program 1 times [2021-11-07 01:35:21,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:21,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [475666281] [2021-11-07 01:35:21,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:21,399 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:21,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:21,400 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:21,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:35:21,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:21,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 01:35:21,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:21,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:35:21,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:21,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:35:21,984 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:35:21,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [475666281] [2021-11-07 01:35:21,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [475666281] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-07 01:35:21,985 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 01:35:21,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2021-11-07 01:35:21,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153630471] [2021-11-07 01:35:21,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:35:21,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:35:21,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:35:21,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:35:21,988 INFO L87 Difference]: Start difference. First operand 1485 states and 6994 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:22,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:35:22,067 INFO L93 Difference]: Finished difference Result 1486 states and 6995 transitions. [2021-11-07 01:35:22,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:35:22,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-07 01:35:22,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:35:22,089 INFO L225 Difference]: With dead ends: 1486 [2021-11-07 01:35:22,089 INFO L226 Difference]: Without dead ends: 1486 [2021-11-07 01:35:22,090 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:35:22,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1486 states. [2021-11-07 01:35:22,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1486 to 1486. [2021-11-07 01:35:22,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1485 states have (on average 4.71043771043771) internal successors, (6995), 1485 states have internal predecessors, (6995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:22,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 6995 transitions. [2021-11-07 01:35:22,185 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 6995 transitions. Word has length 34 [2021-11-07 01:35:22,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:35:22,185 INFO L470 AbstractCegarLoop]: Abstraction has 1486 states and 6995 transitions. [2021-11-07 01:35:22,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:22,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 6995 transitions. [2021-11-07 01:35:22,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-07 01:35:22,194 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:22,194 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:35:22,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:22,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:35:22,407 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-11-07 01:35:22,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:22,408 INFO L85 PathProgramCache]: Analyzing trace with hash -2107826266, now seen corresponding path program 1 times [2021-11-07 01:35:22,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:22,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [435412464] [2021-11-07 01:35:22,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:22,410 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:22,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:22,411 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:22,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:35:22,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:22,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-07 01:35:22,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:22,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:35:22,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:23,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:35:23,289 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:35:23,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [435412464] [2021-11-07 01:35:23,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [435412464] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:35:23,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [101168700] [2021-11-07 01:35:23,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:23,290 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:35:23,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:35:23,294 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:35:23,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-07 01:35:23,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:23,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:35:23,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:23,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:35:23,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:24,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:35:24,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [101168700] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:35:24,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321436741] [2021-11-07 01:35:24,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:24,158 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:35:24,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:35:24,160 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:35:24,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 01:35:24,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:24,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:35:24,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:24,617 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:35:24,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:24,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:35:24,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321436741] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:35:24,821 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:35:24,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 5, 5, 6, 6] total 20 [2021-11-07 01:35:24,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556429184] [2021-11-07 01:35:24,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-07 01:35:24,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:35:24,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-07 01:35:24,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2021-11-07 01:35:24,825 INFO L87 Difference]: Start difference. First operand 1486 states and 6995 transitions. Second operand has 20 states, 20 states have (on average 3.7) internal successors, (74), 20 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:26,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:35:26,730 INFO L93 Difference]: Finished difference Result 4402 states and 20376 transitions. [2021-11-07 01:35:26,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-07 01:35:26,731 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.7) internal successors, (74), 20 states have internal predecessors, (74), 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 35 [2021-11-07 01:35:26,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:35:26,822 INFO L225 Difference]: With dead ends: 4402 [2021-11-07 01:35:26,822 INFO L226 Difference]: Without dead ends: 4402 [2021-11-07 01:35:26,823 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 186 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=286, Invalid=644, Unknown=0, NotChecked=0, Total=930 [2021-11-07 01:35:26,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4402 states. [2021-11-07 01:35:27,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4402 to 3194. [2021-11-07 01:35:27,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3194 states, 3193 states have (on average 4.751017851550266) internal successors, (15170), 3193 states have internal predecessors, (15170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:27,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3194 states to 3194 states and 15170 transitions. [2021-11-07 01:35:27,273 INFO L78 Accepts]: Start accepts. Automaton has 3194 states and 15170 transitions. Word has length 35 [2021-11-07 01:35:27,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:35:27,274 INFO L470 AbstractCegarLoop]: Abstraction has 3194 states and 15170 transitions. [2021-11-07 01:35:27,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.7) internal successors, (74), 20 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:27,274 INFO L276 IsEmpty]: Start isEmpty. Operand 3194 states and 15170 transitions. [2021-11-07 01:35:27,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-07 01:35:27,295 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:27,295 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:35:27,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:27,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:27,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:27,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:35:27,910 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-11-07 01:35:27,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:27,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1735993567, now seen corresponding path program 1 times [2021-11-07 01:35:27,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:27,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1726577977] [2021-11-07 01:35:27,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:27,911 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:27,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:27,912 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:27,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:35:28,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:28,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 01:35:28,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:28,617 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:35:28,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:28,831 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:35:28,831 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:35:28,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1726577977] [2021-11-07 01:35:28,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1726577977] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:35:28,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1881706794] [2021-11-07 01:35:28,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:28,832 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:35:28,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:35:28,838 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:35:28,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-07 01:35:29,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:29,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:35:29,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:29,449 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:35:29,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:29,652 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:35:29,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1881706794] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:35:29,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703875477] [2021-11-07 01:35:29,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:29,653 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:35:29,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:35:29,660 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:35:29,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-07 01:35:29,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:29,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:35:29,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:30,171 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:35:30,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:30,363 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:35:30,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703875477] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:35:30,363 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:35:30,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 6, 6] total 18 [2021-11-07 01:35:30,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860073228] [2021-11-07 01:35:30,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-07 01:35:30,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:35:30,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-07 01:35:30,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2021-11-07 01:35:30,366 INFO L87 Difference]: Start difference. First operand 3194 states and 15170 transitions. Second operand has 18 states, 18 states have (on average 4.555555555555555) internal successors, (82), 18 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:31,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:35:31,789 INFO L93 Difference]: Finished difference Result 5844 states and 27154 transitions. [2021-11-07 01:35:31,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-07 01:35:31,790 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.555555555555555) internal successors, (82), 18 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-07 01:35:31,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:35:31,856 INFO L225 Difference]: With dead ends: 5844 [2021-11-07 01:35:31,856 INFO L226 Difference]: Without dead ends: 5844 [2021-11-07 01:35:31,857 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 194 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=303, Invalid=689, Unknown=0, NotChecked=0, Total=992 [2021-11-07 01:35:31,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5844 states. [2021-11-07 01:35:32,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5844 to 4214. [2021-11-07 01:35:32,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4214 states, 4213 states have (on average 4.772845953002611) internal successors, (20108), 4213 states have internal predecessors, (20108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:32,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4214 states to 4214 states and 20108 transitions. [2021-11-07 01:35:32,198 INFO L78 Accepts]: Start accepts. Automaton has 4214 states and 20108 transitions. Word has length 36 [2021-11-07 01:35:32,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:35:32,199 INFO L470 AbstractCegarLoop]: Abstraction has 4214 states and 20108 transitions. [2021-11-07 01:35:32,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.555555555555555) internal successors, (82), 18 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:32,199 INFO L276 IsEmpty]: Start isEmpty. Operand 4214 states and 20108 transitions. [2021-11-07 01:35:32,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-07 01:35:32,220 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:32,220 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:35:32,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:32,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:32,663 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-07 01:35:32,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:35:32,836 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-11-07 01:35:32,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:32,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1717184578, now seen corresponding path program 1 times [2021-11-07 01:35:32,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:32,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1259997791] [2021-11-07 01:35:32,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:32,837 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:32,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:32,839 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:32,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:35:33,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:33,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 01:35:33,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:33,571 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:35:33,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:33,776 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:35:33,776 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:35:33,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1259997791] [2021-11-07 01:35:33,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1259997791] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:35:33,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [774755846] [2021-11-07 01:35:33,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:33,777 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:35:33,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:35:33,782 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:35:33,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-07 01:35:34,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:34,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:35:34,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:34,640 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:35:34,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:34,824 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:35:34,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [774755846] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:35:34,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743782747] [2021-11-07 01:35:34,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:34,825 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:35:34,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:35:34,826 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:35:34,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-07 01:35:35,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:35,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:35:35,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:35,501 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:35:35,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:35,698 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:35:35,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743782747] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:35:35,699 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:35:35,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 6, 6] total 18 [2021-11-07 01:35:35,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337825517] [2021-11-07 01:35:35,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-07 01:35:35,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:35:35,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-07 01:35:35,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2021-11-07 01:35:35,701 INFO L87 Difference]: Start difference. First operand 4214 states and 20108 transitions. Second operand has 18 states, 18 states have (on average 5.444444444444445) internal successors, (98), 18 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:36,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:35:36,954 INFO L93 Difference]: Finished difference Result 7568 states and 35408 transitions. [2021-11-07 01:35:36,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-07 01:35:36,955 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.444444444444445) internal successors, (98), 18 states have internal predecessors, (98), 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 37 [2021-11-07 01:35:36,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:35:37,007 INFO L225 Difference]: With dead ends: 7568 [2021-11-07 01:35:37,007 INFO L226 Difference]: Without dead ends: 7568 [2021-11-07 01:35:37,008 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 200 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=303, Invalid=689, Unknown=0, NotChecked=0, Total=992 [2021-11-07 01:35:37,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7568 states. [2021-11-07 01:35:37,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7568 to 5458. [2021-11-07 01:35:37,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5458 states, 5457 states have (on average 4.805204324720543) internal successors, (26222), 5457 states have internal predecessors, (26222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:37,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5458 states to 5458 states and 26222 transitions. [2021-11-07 01:35:37,454 INFO L78 Accepts]: Start accepts. Automaton has 5458 states and 26222 transitions. Word has length 37 [2021-11-07 01:35:37,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:35:37,455 INFO L470 AbstractCegarLoop]: Abstraction has 5458 states and 26222 transitions. [2021-11-07 01:35:37,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.444444444444445) internal successors, (98), 18 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:37,456 INFO L276 IsEmpty]: Start isEmpty. Operand 5458 states and 26222 transitions. [2021-11-07 01:35:37,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-07 01:35:37,485 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:37,485 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:35:37,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:37,710 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-07 01:35:37,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:38,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:35:38,102 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-11-07 01:35:38,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:38,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1849327548, now seen corresponding path program 1 times [2021-11-07 01:35:38,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:38,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [804549845] [2021-11-07 01:35:38,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:38,103 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:38,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:38,109 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:38,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 01:35:38,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:38,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 01:35:38,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:38,826 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-07 01:35:38,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 216 treesize of output 62 [2021-11-07 01:35:39,272 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:35:39,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:40,644 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:35:40,644 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:35:40,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [804549845] [2021-11-07 01:35:40,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [804549845] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:35:40,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [177219829] [2021-11-07 01:35:40,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:40,644 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:35:40,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:35:40,645 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:35:40,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-07 01:35:41,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:41,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-07 01:35:41,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:42,008 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:35:42,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 174 treesize of output 62 [2021-11-07 01:35:42,456 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:35:42,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:44,225 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:35:44,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [177219829] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:35:44,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582575961] [2021-11-07 01:35:44,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:44,225 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:35:44,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:35:44,226 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:35:44,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-07 01:35:44,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:44,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-07 01:35:44,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:45,145 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:35:45,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 174 treesize of output 62 [2021-11-07 01:35:45,406 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:35:45,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:45,938 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:35:45,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582575961] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:35:45,938 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:35:45,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 9, 7, 8, 7] total 29 [2021-11-07 01:35:45,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336064679] [2021-11-07 01:35:45,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-07 01:35:45,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:35:45,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-07 01:35:45,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=634, Unknown=0, NotChecked=0, Total=870 [2021-11-07 01:35:45,941 INFO L87 Difference]: Start difference. First operand 5458 states and 26222 transitions. Second operand has 30 states, 29 states have (on average 4.172413793103448) internal successors, (121), 30 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:01,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:01,772 INFO L93 Difference]: Finished difference Result 47492 states and 223942 transitions. [2021-11-07 01:37:01,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-11-07 01:37:01,773 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 4.172413793103448) internal successors, (121), 30 states have internal predecessors, (121), 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 38 [2021-11-07 01:37:01,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:01,950 INFO L225 Difference]: With dead ends: 47492 [2021-11-07 01:37:01,951 INFO L226 Difference]: Without dead ends: 22129 [2021-11-07 01:37:01,954 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 210 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2577 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=2065, Invalid=5945, Unknown=0, NotChecked=0, Total=8010 [2021-11-07 01:37:02,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22129 states. [2021-11-07 01:37:02,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22129 to 8174. [2021-11-07 01:37:02,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8174 states, 8173 states have (on average 4.740364615196379) internal successors, (38743), 8173 states have internal predecessors, (38743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:02,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8174 states to 8174 states and 38743 transitions. [2021-11-07 01:37:02,781 INFO L78 Accepts]: Start accepts. Automaton has 8174 states and 38743 transitions. Word has length 38 [2021-11-07 01:37:02,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:02,782 INFO L470 AbstractCegarLoop]: Abstraction has 8174 states and 38743 transitions. [2021-11-07 01:37:02,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 4.172413793103448) internal successors, (121), 30 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:02,783 INFO L276 IsEmpty]: Start isEmpty. Operand 8174 states and 38743 transitions. [2021-11-07 01:37:02,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-07 01:37:02,985 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:02,985 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:37:03,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:03,203 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-07 01:37:03,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:03,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:37:03,594 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-11-07 01:37:03,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:03,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1834570396, now seen corresponding path program 2 times [2021-11-07 01:37:03,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:03,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [390990326] [2021-11-07 01:37:03,595 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:37:03,595 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:03,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:03,598 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:03,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 01:37:04,322 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:37:04,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:37:04,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-07 01:37:04,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:04,454 INFO L354 Elim1Store]: treesize reduction 163, result has 15.1 percent of original size [2021-11-07 01:37:04,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 39 [2021-11-07 01:44:23,925 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-11-07 01:44:23,926 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:44:23,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [390990326] [2021-11-07 01:44:23,927 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/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") [2021-11-07 01:44:23,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [228627391] [2021-11-07 01:44:23,927 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:44:23,927 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:44:23,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:44:23,927 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2021-11-07 01:44:23,929 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:44:23,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-07 01:44:25,058 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:44:25,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747943541] [2021-11-07 01:44:25,059 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:44:25,059 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:44:25,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:44:25,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 1 [2021-11-07 01:44:25,069 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:44:25,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-07 01:44:25,892 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:44:25,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:44:25,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-07 01:44:25,899 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-11-07 01:44:25,899 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:44:25,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-07 01:44:25,900 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-11-07 01:44:25,900 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-11-07 01:44:25,905 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:44:25,907 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-11-07 01:44:25,907 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-11-07 01:44:25,907 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION [2021-11-07 01:44:25,907 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATION [2021-11-07 01:44:25,908 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4INUSE_VIOLATION [2021-11-07 01:44:25,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-07 01:44:26,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 01:44:26,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4eec99e-0751-446c-8c84-e984d497d8f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:44:26,311 INFO L731 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2021-11-07 01:44:26,314 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-07 01:44:26,314 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 01:44:26,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:44:26 BasicIcfg [2021-11-07 01:44:26,338 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 01:44:26,339 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 01:44:26,339 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 01:44:26,339 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 01:44:26,340 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:34:39" (3/4) ... [2021-11-07 01:44:26,343 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 01:44:26,343 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 01:44:26,345 INFO L168 Benchmark]: Toolchain (without parser) took 588932.09 ms. Allocated memory was 69.2 MB in the beginning and 666.9 MB in the end (delta: 597.7 MB). Free memory was 46.8 MB in the beginning and 282.4 MB in the end (delta: -235.6 MB). Peak memory consumption was 361.3 MB. Max. memory is 16.1 GB. [2021-11-07 01:44:26,345 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 54.5 MB. Free memory was 34.7 MB in the beginning and 34.6 MB in the end (delta: 41.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:44:26,346 INFO L168 Benchmark]: CACSL2BoogieTranslator took 455.47 ms. Allocated memory is still 69.2 MB. Free memory was 46.7 MB in the beginning and 49.5 MB in the end (delta: -2.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:44:26,346 INFO L168 Benchmark]: Boogie Procedure Inliner took 76.05 ms. Allocated memory is still 69.2 MB. Free memory was 49.5 MB in the beginning and 47.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:44:26,347 INFO L168 Benchmark]: Boogie Preprocessor took 77.22 ms. Allocated memory is still 69.2 MB. Free memory was 47.2 MB in the beginning and 45.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:44:26,347 INFO L168 Benchmark]: RCFGBuilder took 1419.08 ms. Allocated memory is still 69.2 MB. Free memory was 45.4 MB in the beginning and 32.4 MB in the end (delta: 13.0 MB). Peak memory consumption was 21.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:44:26,348 INFO L168 Benchmark]: TraceAbstraction took 586892.15 ms. Allocated memory was 69.2 MB in the beginning and 666.9 MB in the end (delta: 597.7 MB). Free memory was 31.9 MB in the beginning and 282.4 MB in the end (delta: -250.5 MB). Peak memory consumption was 347.2 MB. Max. memory is 16.1 GB. [2021-11-07 01:44:26,348 INFO L168 Benchmark]: Witness Printer took 4.65 ms. Allocated memory is still 666.9 MB. Free memory is still 282.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:44:26,351 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 54.5 MB. Free memory was 34.7 MB in the beginning and 34.6 MB in the end (delta: 41.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 455.47 ms. Allocated memory is still 69.2 MB. Free memory was 46.7 MB in the beginning and 49.5 MB in the end (delta: -2.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 76.05 ms. Allocated memory is still 69.2 MB. Free memory was 49.5 MB in the beginning and 47.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 77.22 ms. Allocated memory is still 69.2 MB. Free memory was 47.2 MB in the beginning and 45.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1419.08 ms. Allocated memory is still 69.2 MB. Free memory was 45.4 MB in the beginning and 32.4 MB in the end (delta: 13.0 MB). Peak memory consumption was 21.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 586892.15 ms. Allocated memory was 69.2 MB in the beginning and 666.9 MB in the end (delta: 597.7 MB). Free memory was 31.9 MB in the beginning and 282.4 MB in the end (delta: -250.5 MB). Peak memory consumption was 347.2 MB. Max. memory is 16.1 GB. * Witness Printer took 4.65 ms. Allocated memory is still 666.9 MB. Free memory is still 282.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 40.0s, 181 PlacesBefore, 55 PlacesAfterwards, 179 TransitionsBefore, 44 TransitionsAfterwards, 3806 CoEnabledTransitionPairs, 8 FixpointIterations, 80 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 13 TrivialYvCompositions, 8 ConcurrentYvCompositions, 9 ChoiceCompositions, 156 TotalNumberOfCompositions, 6183 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4344, positive: 4197, positive conditional: 0, positive unconditional: 4197, negative: 147, negative conditional: 0, negative unconditional: 147, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2480, positive: 2440, positive conditional: 0, positive unconditional: 2440, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2480, positive: 2440, positive conditional: 0, positive unconditional: 2440, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 40, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 3268, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3268, negative conditional: 0, negative unconditional: 3268, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4344, positive: 1757, positive conditional: 0, positive unconditional: 1757, negative: 107, negative conditional: 0, negative unconditional: 107, unknown: 2480, unknown conditional: 0, unknown unconditional: 2480] , Statistics on independence cache: Total cache size (in pairs): 204, Positive cache size: 191, Positive conditional cache size: 0, Positive unconditional cache size: 191, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 134]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L41] 0 int* A; [L42] 0 int min, max, N; [L43] 0 _Bool v_assert, b1, b2; [L115] 0 pthread_t t1, t2, t3, t4, t5; [L117] 0 N = __VERIFIER_nondet_int() [L38] COND FALSE 0 !(!cond) [L38] COND FALSE 0 !(!cond) [L38] COND FALSE 0 !(!cond) [L143] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L144] 0 int i = 0; [L144] COND TRUE 0 i < size [L145] 0 arr[i] = __VERIFIER_nondet_int() [L144] 0 i++ [L147] 0 return arr; [L119] 0 A = create_fresh_int_array(N) [L122] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) [L123] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) [L68] EXPR 2 A[0] [L68] 2 max = A[0] [L72] 2 b2 = 1 [L75] 2 int i=0; [L75] COND TRUE 2 i A[i] ? max : A[i] [L77] 2 max = max > A[i] ? max : A[i] [L75] 2 i++ [L81] 2 return 0; [L50] EXPR 1 A[0] [L50] 1 min = A[0] [L124] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) [L85] 3 int i=0; [L85] COND TRUE 3 i= 2147483647 || min <= max + 1 [L111] 5 return 0; [L127] 0 \read(t1) [L127] FCALL, JOIN 1 pthread_join(t1, 0) [L128] 0 \read(t2) [L128] FCALL, JOIN 2 pthread_join(t2, 0) [L129] 0 \read(t3) [L129] FCALL, JOIN 3 pthread_join(t3, 0) [L130] 0 \read(t4) [L103] 4 return 0; [L130] FCALL, JOIN 4 pthread_join(t4, 0) [L131] 0 \read(t5) [L131] FCALL, JOIN 5 pthread_join(t5, 0) [L38] COND TRUE 0 !cond [L134] 0 reach_error() - UnprovableResult [Line: 123]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 122]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 126]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 125]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 124]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 11 procedures, 215 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 586.6s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.3s, AutomataDifference: 81.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 40.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 573 SDtfs, 2084 SDslu, 3369 SDs, 0 SdLazy, 2374 SolverSat, 252 SolverUnsat, 24 SolverUnknown, 0 SolverNotchecked, 71.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1107 GetRequests, 911 SyntacticMatches, 10 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3214 ImplicationChecksByTransitivity, 10.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8174occurred in iteration=6, InterpolantAutomatonStates: 126, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.3s AutomataMinimizationTime, 6 MinimizatonAttempts, 18903 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 451.0s InterpolantComputationTime, 543 NumberOfCodeBlocks, 543 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 982 ConstructedInterpolants, 39 QuantifiedInterpolants, 6713 SizeOfPredicates, 99 NumberOfNonLiveVariables, 2247 ConjunctsInSsa, 162 ConjunctsInUnsatCore, 28 InterpolantComputations, 3 PerfectInterpolantSequences, 53/86 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN