./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.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_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/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_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/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_6e555c15-5d03-4936-9240-50729a1c1036/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 c2150e0b957073117139b89f4d79d7a8523050efb20e53a1bf0b405c120dd6a7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:07:23,004 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:07:23,006 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:07:23,036 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:07:23,037 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:07:23,038 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:07:23,040 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:07:23,042 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:07:23,044 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:07:23,046 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:07:23,047 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:07:23,048 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:07:23,049 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:07:23,050 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:07:23,052 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:07:23,053 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:07:23,054 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:07:23,055 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:07:23,057 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:07:23,060 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:07:23,062 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:07:23,063 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:07:23,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:07:23,066 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:07:23,070 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:07:23,070 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:07:23,071 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:07:23,072 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:07:23,072 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:07:23,074 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:07:23,074 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:07:23,075 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:07:23,076 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:07:23,077 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:07:23,078 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:07:23,079 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:07:23,080 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:07:23,080 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:07:23,081 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:07:23,082 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:07:23,083 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:07:23,084 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 02:07:23,119 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:07:23,119 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:07:23,120 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:07:23,120 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:07:23,121 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:07:23,121 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:07:23,121 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:07:23,121 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:07:23,121 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:07:23,122 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:07:23,122 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:07:23,122 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:07:23,122 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:07:23,123 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:07:23,125 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:07:23,125 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:07:23,126 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:07:23,126 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:07:23,126 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:07:23,126 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:07:23,127 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:07:23,127 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:07:23,127 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:07:23,128 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:07:23,128 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:07:23,128 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:07:23,128 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:07:23,128 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:07:23,129 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:07:23,131 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:07:23,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:07:23,131 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:07:23,132 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:07:23,132 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:07:23,132 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:07:23,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:07:23,133 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:07:23,133 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:07:23,134 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:07:23,134 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_6e555c15-5d03-4936-9240-50729a1c1036/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2150e0b957073117139b89f4d79d7a8523050efb20e53a1bf0b405c120dd6a7 [2021-11-07 02:07:23,473 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:07:23,509 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:07:23,511 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:07:23,513 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:07:23,513 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:07:23,514 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c [2021-11-07 02:07:23,587 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/data/68b1f65c1/fc8ee3c283bc4de58e04a563c15f4470/FLAG3c05f1e03 [2021-11-07 02:07:24,133 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:07:24,134 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c [2021-11-07 02:07:24,150 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/data/68b1f65c1/fc8ee3c283bc4de58e04a563c15f4470/FLAG3c05f1e03 [2021-11-07 02:07:24,486 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/data/68b1f65c1/fc8ee3c283bc4de58e04a563c15f4470 [2021-11-07 02:07:24,489 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:07:24,491 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:07:24,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:07:24,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:07:24,498 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:07:24,499 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:07:24" (1/1) ... [2021-11-07 02:07:24,501 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46fbe4a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:07:24, skipping insertion in model container [2021-11-07 02:07:24,501 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:07:24" (1/1) ... [2021-11-07 02:07:24,509 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:07:24,543 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:07:24,803 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_6e555c15-5d03-4936-9240-50729a1c1036/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c[4174,4187] [2021-11-07 02:07:24,817 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:07:24,835 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 02:07:24,836 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2569c7dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:07:24, skipping insertion in model container [2021-11-07 02:07:24,836 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:07:24,836 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 02:07:24,840 INFO L168 Benchmark]: Toolchain (without parser) took 346.52 ms. Allocated memory was 90.2 MB in the beginning and 111.1 MB in the end (delta: 21.0 MB). Free memory was 52.6 MB in the beginning and 86.5 MB in the end (delta: -33.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 02:07:24,841 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 90.2 MB. Free memory is still 69.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:07:24,843 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.68 ms. Allocated memory was 90.2 MB in the beginning and 111.1 MB in the end (delta: 21.0 MB). Free memory was 52.5 MB in the beginning and 86.5 MB in the end (delta: -34.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 02:07:24,845 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 90.2 MB. Free memory is still 69.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 341.68 ms. Allocated memory was 90.2 MB in the beginning and 111.1 MB in the end (delta: 21.0 MB). Free memory was 52.5 MB in the beginning and 86.5 MB in the end (delta: -34.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 159]: 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_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/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_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/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_6e555c15-5d03-4936-9240-50729a1c1036/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 c2150e0b957073117139b89f4d79d7a8523050efb20e53a1bf0b405c120dd6a7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:07:27,036 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:07:27,038 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:07:27,077 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:07:27,078 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:07:27,082 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:07:27,084 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:07:27,092 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:07:27,095 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:07:27,103 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:07:27,105 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:07:27,107 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:07:27,107 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:07:27,110 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:07:27,112 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:07:27,117 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:07:27,118 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:07:27,119 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:07:27,121 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:07:27,129 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:07:27,131 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:07:27,132 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:07:27,135 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:07:27,137 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:07:27,146 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:07:27,146 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:07:27,146 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:07:27,148 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:07:27,149 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:07:27,150 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:07:27,151 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:07:27,152 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:07:27,154 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:07:27,154 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:07:27,156 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:07:27,156 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:07:27,157 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:07:27,157 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:07:27,157 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:07:27,159 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:07:27,160 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:07:27,165 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 02:07:27,207 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:07:27,207 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:07:27,208 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:07:27,209 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:07:27,209 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:07:27,209 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:07:27,209 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:07:27,209 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:07:27,210 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:07:27,215 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:07:27,216 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:07:27,216 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:07:27,217 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:07:27,217 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:07:27,217 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:07:27,217 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:07:27,217 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:07:27,218 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 02:07:27,218 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 02:07:27,218 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:07:27,218 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:07:27,218 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:07:27,218 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:07:27,219 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:07:27,219 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 02:07:27,219 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:07:27,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:07:27,220 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:07:27,220 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:07:27,220 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:07:27,220 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 02:07:27,220 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 02:07:27,220 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:07:27,221 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:07:27,221 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:07:27,221 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_6e555c15-5d03-4936-9240-50729a1c1036/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2150e0b957073117139b89f4d79d7a8523050efb20e53a1bf0b405c120dd6a7 [2021-11-07 02:07:27,656 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:07:27,687 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:07:27,690 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:07:27,691 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:07:27,692 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:07:27,693 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c [2021-11-07 02:07:27,774 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/data/13e985b82/00fd24ea816d4b788ccd61eff94a4aa2/FLAG63cb3a9a8 [2021-11-07 02:07:28,359 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:07:28,360 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c [2021-11-07 02:07:28,373 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/data/13e985b82/00fd24ea816d4b788ccd61eff94a4aa2/FLAG63cb3a9a8 [2021-11-07 02:07:28,721 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/data/13e985b82/00fd24ea816d4b788ccd61eff94a4aa2 [2021-11-07 02:07:28,724 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:07:28,725 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:07:28,727 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:07:28,727 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:07:28,730 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:07:28,731 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:07:28" (1/1) ... [2021-11-07 02:07:28,733 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f16037 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:07:28, skipping insertion in model container [2021-11-07 02:07:28,733 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:07:28" (1/1) ... [2021-11-07 02:07:28,741 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:07:28,779 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:07:28,995 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_6e555c15-5d03-4936-9240-50729a1c1036/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c[4174,4187] [2021-11-07 02:07:29,006 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:07:29,025 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 02:07:29,030 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:07:29,087 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_6e555c15-5d03-4936-9240-50729a1c1036/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c[4174,4187] [2021-11-07 02:07:29,093 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:07:29,105 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:07:29,157 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_6e555c15-5d03-4936-9240-50729a1c1036/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c[4174,4187] [2021-11-07 02:07:29,175 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:07:29,206 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:07:29,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:07:29 WrapperNode [2021-11-07 02:07:29,212 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:07:29,213 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:07:29,213 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:07:29,213 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:07:29,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:07:29" (1/1) ... [2021-11-07 02:07:29,244 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:07:29" (1/1) ... [2021-11-07 02:07:29,294 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:07:29,295 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:07:29,295 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:07:29,295 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:07:29,305 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:07:29" (1/1) ... [2021-11-07 02:07:29,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:07:29" (1/1) ... [2021-11-07 02:07:29,324 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:07:29" (1/1) ... [2021-11-07 02:07:29,324 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:07:29" (1/1) ... [2021-11-07 02:07:29,353 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:07:29" (1/1) ... [2021-11-07 02:07:29,359 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:07:29" (1/1) ... [2021-11-07 02:07:29,375 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:07:29" (1/1) ... [2021-11-07 02:07:29,380 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:07:29,380 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:07:29,381 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:07:29,381 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:07:29,381 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:07:29" (1/1) ... [2021-11-07 02:07:29,388 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:07:29,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:07:29,424 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:07:29,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:07:29,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 02:07:29,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:07:29,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 02:07:29,478 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-07 02:07:29,478 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-07 02:07:29,478 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-07 02:07:29,478 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-07 02:07:29,479 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-07 02:07:29,479 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-07 02:07:29,479 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-11-07 02:07:29,479 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-11-07 02:07:29,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-07 02:07:29,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-07 02:07:29,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 02:07:29,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:07:29,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:07:29,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 02:07:29,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 02:07:29,483 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 02:07:31,152 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:07:31,153 INFO L299 CfgBuilder]: Removed 48 assume(true) statements. [2021-11-07 02:07:31,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:07:31 BoogieIcfgContainer [2021-11-07 02:07:31,155 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:07:31,157 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:07:31,157 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:07:31,160 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:07:31,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:07:28" (1/3) ... [2021-11-07 02:07:31,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@437a9752 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:07:31, skipping insertion in model container [2021-11-07 02:07:31,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:07:29" (2/3) ... [2021-11-07 02:07:31,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@437a9752 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:07:31, skipping insertion in model container [2021-11-07 02:07:31,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:07:31" (3/3) ... [2021-11-07 02:07:31,163 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-bad-buffer-mult-alt2.wvr.c [2021-11-07 02:07:31,169 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-07 02:07:31,169 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:07:31,169 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 02:07:31,169 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-07 02:07:31,207 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,208 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,208 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,208 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,209 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,209 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,209 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,209 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,209 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,210 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,210 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,210 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,210 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~short4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,210 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,211 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,211 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,211 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,212 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,212 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,212 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~short4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,212 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,212 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,213 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,213 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,213 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,214 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,214 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,214 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,215 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,215 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,215 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,215 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,215 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,216 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,216 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,216 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,216 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,216 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~short8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,217 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,217 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,217 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,217 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,217 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,218 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,218 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~short8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,218 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,218 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,219 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,219 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,219 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,220 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,220 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,220 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,220 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,221 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,221 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,221 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,221 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,222 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,222 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,222 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,222 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,222 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,222 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,223 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,223 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,223 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,223 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,223 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,224 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,224 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,224 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,224 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,224 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,225 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,225 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,225 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,225 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,225 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,226 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,226 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,226 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,226 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,227 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,227 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_~cond~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,227 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_~cond~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,243 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_~cond~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,243 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_~cond~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,244 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_~cond~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,244 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_~cond~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,244 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,244 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,245 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,245 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,245 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,245 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,245 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,245 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,246 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,246 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,246 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,246 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,246 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,247 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,247 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,247 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,247 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,247 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,248 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,248 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,248 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,248 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,248 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,248 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,249 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_~cond~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,249 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_~cond~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,252 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,252 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,253 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,253 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,253 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,253 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,253 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,254 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,254 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,254 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,254 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,254 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,255 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,258 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,258 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,258 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,258 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,259 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~short4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,259 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,259 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,259 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,259 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,262 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,262 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_~cond~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,262 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,262 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,263 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,263 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,263 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,263 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,263 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,264 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,264 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,264 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,264 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,266 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,267 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,267 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~short8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,267 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,267 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,267 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,268 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,268 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,268 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:07:31,276 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-11-07 02:07:31,347 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:07:31,353 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 02:07:31,354 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-07 02:07:31,381 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-07 02:07:31,391 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 206 places, 212 transitions, 456 flow [2021-11-07 02:07:31,395 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 206 places, 212 transitions, 456 flow [2021-11-07 02:07:31,396 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 206 places, 212 transitions, 456 flow [2021-11-07 02:07:31,525 INFO L129 PetriNetUnfolder]: 19/208 cut-off events. [2021-11-07 02:07:31,526 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-11-07 02:07:31,532 INFO L84 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 208 events. 19/208 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 114 event pairs, 0 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 172. Up to 2 conditions per place. [2021-11-07 02:07:31,536 INFO L116 LiptonReduction]: Number of co-enabled transitions 1824 [2021-11-07 02:07:54,631 WARN L207 SmtUtils]: Spent 6.23 s on a formula simplification. DAG size of input: 172 DAG size of output: 171 [2021-11-07 02:08:02,459 WARN L207 SmtUtils]: Spent 6.56 s on a formula simplification. DAG size of input: 181 DAG size of output: 180 [2021-11-07 02:08:03,686 INFO L131 LiptonReduction]: Checked pairs total: 2970 [2021-11-07 02:08:03,686 INFO L133 LiptonReduction]: Total number of compositions: 204 [2021-11-07 02:08:03,701 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 47 places, 40 transitions, 112 flow [2021-11-07 02:08:03,749 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 526 states, 525 states have (on average 4.102857142857143) internal successors, (2154), 525 states have internal predecessors, (2154), 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 02:08:03,753 INFO L276 IsEmpty]: Start isEmpty. Operand has 526 states, 525 states have (on average 4.102857142857143) internal successors, (2154), 525 states have internal predecessors, (2154), 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 02:08:03,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-07 02:08:03,770 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:03,771 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] [2021-11-07 02:08:03,772 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-07 02:08:03,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:03,777 INFO L85 PathProgramCache]: Analyzing trace with hash 264590399, now seen corresponding path program 1 times [2021-11-07 02:08:03,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:08:03,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1182375062] [2021-11-07 02:08:03,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:03,790 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:08:03,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:08:03,793 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:08:03,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:08:03,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:03,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 02:08:03,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:04,402 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 02:08:04,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:04,685 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 02:08:04,686 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:08:04,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1182375062] [2021-11-07 02:08:04,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1182375062] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:04,687 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:08:04,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-07 02:08:04,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089656831] [2021-11-07 02:08:04,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 02:08:04,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:08:04,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 02:08:04,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:08:04,729 INFO L87 Difference]: Start difference. First operand has 526 states, 525 states have (on average 4.102857142857143) internal successors, (2154), 525 states have internal predecessors, (2154), 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 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:05,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:05,037 INFO L93 Difference]: Finished difference Result 1050 states and 4160 transitions. [2021-11-07 02:08:05,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 02:08:05,040 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-07 02:08:05,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:05,069 INFO L225 Difference]: With dead ends: 1050 [2021-11-07 02:08:05,069 INFO L226 Difference]: Without dead ends: 918 [2021-11-07 02:08:05,071 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:08:05,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2021-11-07 02:08:05,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 734. [2021-11-07 02:08:05,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 733 states have (on average 3.9945429740791267) internal successors, (2928), 733 states have internal predecessors, (2928), 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 02:08:05,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 2928 transitions. [2021-11-07 02:08:05,180 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 2928 transitions. Word has length 27 [2021-11-07 02:08:05,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:05,181 INFO L470 AbstractCegarLoop]: Abstraction has 734 states and 2928 transitions. [2021-11-07 02:08:05,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:05,182 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 2928 transitions. [2021-11-07 02:08:05,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-07 02:08:05,187 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:05,187 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:08:05,202 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-07 02:08:05,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:08:05,399 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-07 02:08:05,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:05,400 INFO L85 PathProgramCache]: Analyzing trace with hash -9790355, now seen corresponding path program 1 times [2021-11-07 02:08:05,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:08:05,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1108927306] [2021-11-07 02:08:05,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:05,402 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:08:05,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:08:05,403 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:08:05,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:08:05,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:05,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 02:08:05,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:05,840 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:08:05,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:05,977 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:08:05,978 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:08:05,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1108927306] [2021-11-07 02:08:05,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1108927306] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:05,978 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:08:05,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 02:08:05,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604802421] [2021-11-07 02:08:05,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:08:05,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:08:05,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:08:05,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:08:05,981 INFO L87 Difference]: Start difference. First operand 734 states and 2928 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:06,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:06,099 INFO L93 Difference]: Finished difference Result 873 states and 3377 transitions. [2021-11-07 02:08:06,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:08:06,102 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-11-07 02:08:06,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:06,110 INFO L225 Difference]: With dead ends: 873 [2021-11-07 02:08:06,110 INFO L226 Difference]: Without dead ends: 735 [2021-11-07 02:08:06,111 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:08:06,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2021-11-07 02:08:06,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 735. [2021-11-07 02:08:06,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 734 states have (on average 3.9904632152588557) internal successors, (2929), 734 states have internal predecessors, (2929), 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 02:08:06,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 2929 transitions. [2021-11-07 02:08:06,149 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 2929 transitions. Word has length 29 [2021-11-07 02:08:06,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:06,149 INFO L470 AbstractCegarLoop]: Abstraction has 735 states and 2929 transitions. [2021-11-07 02:08:06,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:06,150 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 2929 transitions. [2021-11-07 02:08:06,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-07 02:08:06,153 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:06,154 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:08:06,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:06,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:08:06,366 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-07 02:08:06,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:06,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1227226336, now seen corresponding path program 1 times [2021-11-07 02:08:06,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:08:06,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [500787502] [2021-11-07 02:08:06,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:06,367 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:08:06,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:08:06,369 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:08:06,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 02:08:06,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:06,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 02:08:06,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:06,899 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:06,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:07,639 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:07,639 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:08:07,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [500787502] [2021-11-07 02:08:07,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [500787502] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:08:07,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1150946957] [2021-11-07 02:08:07,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:07,640 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:08:07,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:08:07,644 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:08:07,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-07 02:08:07,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:07,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 02:08:07,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:08,215 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:08,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:08,739 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:08,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1150946957] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:08:08,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268239489] [2021-11-07 02:08:08,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:08,740 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:08:08,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:08:08,745 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:08:08,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 02:08:08,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:08,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 02:08:08,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:09,132 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:09,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:09,372 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:09,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268239489] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:08:09,373 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 02:08:09,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 16 [2021-11-07 02:08:09,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509338151] [2021-11-07 02:08:09,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-07 02:08:09,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:08:09,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-07 02:08:09,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-07 02:08:09,375 INFO L87 Difference]: Start difference. First operand 735 states and 2929 transitions. Second operand has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 16 states have internal predecessors, (72), 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 02:08:09,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:09,658 INFO L93 Difference]: Finished difference Result 1360 states and 5270 transitions. [2021-11-07 02:08:09,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 02:08:09,659 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 16 states have internal predecessors, (72), 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 30 [2021-11-07 02:08:09,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:09,685 INFO L225 Difference]: With dead ends: 1360 [2021-11-07 02:08:09,685 INFO L226 Difference]: Without dead ends: 1360 [2021-11-07 02:08:09,686 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-07 02:08:09,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2021-11-07 02:08:09,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 1032. [2021-11-07 02:08:09,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1032 states, 1031 states have (on average 4.003879728419011) internal successors, (4128), 1031 states have internal predecessors, (4128), 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 02:08:09,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 4128 transitions. [2021-11-07 02:08:09,745 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 4128 transitions. Word has length 30 [2021-11-07 02:08:09,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:09,746 INFO L470 AbstractCegarLoop]: Abstraction has 1032 states and 4128 transitions. [2021-11-07 02:08:09,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 16 states have internal predecessors, (72), 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 02:08:09,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 4128 transitions. [2021-11-07 02:08:09,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 02:08:09,752 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:09,752 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:08:09,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:09,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:10,185 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-07 02:08:10,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:08:10,364 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-07 02:08:10,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:10,365 INFO L85 PathProgramCache]: Analyzing trace with hash 920038093, now seen corresponding path program 2 times [2021-11-07 02:08:10,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:08:10,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1939324027] [2021-11-07 02:08:10,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 02:08:10,366 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:08:10,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:08:10,367 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:08:10,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 02:08:10,740 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 02:08:10,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:08:10,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-07 02:08:10,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:11,368 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:11,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:12,074 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:08:12,074 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:08:12,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1939324027] [2021-11-07 02:08:12,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1939324027] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-07 02:08:12,075 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 02:08:12,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 14 [2021-11-07 02:08:12,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601336667] [2021-11-07 02:08:12,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:08:12,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:08:12,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:08:12,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-11-07 02:08:12,077 INFO L87 Difference]: Start difference. First operand 1032 states and 4128 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 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 02:08:12,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:12,613 INFO L93 Difference]: Finished difference Result 1532 states and 6198 transitions. [2021-11-07 02:08:12,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 02:08:12,614 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-07 02:08:12,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:12,631 INFO L225 Difference]: With dead ends: 1532 [2021-11-07 02:08:12,631 INFO L226 Difference]: Without dead ends: 1532 [2021-11-07 02:08:12,632 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-11-07 02:08:12,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1532 states. [2021-11-07 02:08:12,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1532 to 1016. [2021-11-07 02:08:12,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1016 states, 1015 states have (on average 4.023645320197044) internal successors, (4084), 1015 states have internal predecessors, (4084), 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 02:08:12,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 4084 transitions. [2021-11-07 02:08:12,689 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 4084 transitions. Word has length 31 [2021-11-07 02:08:12,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:12,689 INFO L470 AbstractCegarLoop]: Abstraction has 1016 states and 4084 transitions. [2021-11-07 02:08:12,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 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 02:08:12,690 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 4084 transitions. [2021-11-07 02:08:12,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 02:08:12,694 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:12,695 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] [2021-11-07 02:08:12,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:12,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:08:12,908 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-07 02:08:12,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:12,909 INFO L85 PathProgramCache]: Analyzing trace with hash -37437560, now seen corresponding path program 1 times [2021-11-07 02:08:12,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:08:12,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [101861168] [2021-11-07 02:08:12,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:12,910 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:08:12,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:08:12,910 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:08:12,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 02:08:13,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:13,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-07 02:08:13,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:13,555 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-11-07 02:08:13,556 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 91 treesize of output 19 [2021-11-07 02:08:13,721 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:08:13,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:15,239 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-11-07 02:08:15,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 93 treesize of output 71 [2021-11-07 02:08:28,879 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:08:28,879 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:08:28,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [101861168] [2021-11-07 02:08:28,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [101861168] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:08:28,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [776726197] [2021-11-07 02:08:28,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:28,880 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:08:28,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:08:28,880 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:08:28,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-07 02:08:29,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:29,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-07 02:08:29,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:29,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:29,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:29,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:29,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:29,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:29,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:29,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2021-11-07 02:08:34,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:34,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:34,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:34,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:34,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:34,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:34,746 INFO L354 Elim1Store]: treesize reduction 923, result has 6.4 percent of original size [2021-11-07 02:08:34,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 13 case distinctions, treesize of input 84 treesize of output 104 [2021-11-07 02:08:39,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:39,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:39,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:39,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:39,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:39,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:52,311 WARN L207 SmtUtils]: Spent 2.21 m on a formula simplification. DAG size of input: 347 DAG size of output: 117 [2021-11-07 02:10:52,312 INFO L354 Elim1Store]: treesize reduction 1702, result has 18.4 percent of original size [2021-11-07 02:10:52,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 39 case distinctions, treesize of input 122 treesize of output 441 [2021-11-07 02:17:03,466 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/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 02:17:03,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-11-07 02:17:03,469 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/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 02:17:03,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39625657] [2021-11-07 02:17:03,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:17:03,470 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:17:03,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:17:03,472 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:17:03,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-07 02:17:04,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:17:04,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-07 02:17:04,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:17:04,146 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/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 02:17:04,146 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:17:04,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-11-07 02:17:04,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639211883] [2021-11-07 02:17:04,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 02:17:04,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:17:04,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 02:17:04,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=121, Unknown=1, NotChecked=0, Total=156 [2021-11-07 02:17:04,148 INFO L87 Difference]: Start difference. First operand 1016 states and 4084 transitions. Second operand has 9 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 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 02:17:04,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-07 02:17:04,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-07 02:17:04,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 02:17:04,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:17:04,750 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:312) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:158) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertCodeBlock(IncrementalHoareTripleChecker.java:432) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:275) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:281) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:93) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:162) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:201) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:886) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:783) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:442) at java.base/java.io.OutputStream.write(OutputStream.java:157) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:156) ... 35 more [2021-11-07 02:17:04,754 INFO L168 Benchmark]: Toolchain (without parser) took 576028.97 ms. Allocated memory was 60.8 MB in the beginning and 123.7 MB in the end (delta: 62.9 MB). Free memory was 40.1 MB in the beginning and 76.2 MB in the end (delta: -36.1 MB). Peak memory consumption was 85.7 MB. Max. memory is 16.1 GB. [2021-11-07 02:17:04,755 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 60.8 MB. Free memory is still 41.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:17:04,755 INFO L168 Benchmark]: CACSL2BoogieTranslator took 485.61 ms. Allocated memory is still 60.8 MB. Free memory was 40.0 MB in the beginning and 39.5 MB in the end (delta: 510.2 kB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-07 02:17:04,755 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.08 ms. Allocated memory is still 60.8 MB. Free memory was 39.3 MB in the beginning and 36.8 MB in the end (delta: 2.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:17:04,756 INFO L168 Benchmark]: Boogie Preprocessor took 85.14 ms. Allocated memory is still 60.8 MB. Free memory was 36.8 MB in the beginning and 34.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-07 02:17:04,756 INFO L168 Benchmark]: RCFGBuilder took 1774.91 ms. Allocated memory was 60.8 MB in the beginning and 77.6 MB in the end (delta: 16.8 MB). Free memory was 34.5 MB in the beginning and 43.4 MB in the end (delta: -9.0 MB). Peak memory consumption was 22.7 MB. Max. memory is 16.1 GB. [2021-11-07 02:17:04,757 INFO L168 Benchmark]: TraceAbstraction took 573596.52 ms. Allocated memory was 77.6 MB in the beginning and 123.7 MB in the end (delta: 46.1 MB). Free memory was 43.2 MB in the beginning and 76.2 MB in the end (delta: -33.0 MB). Peak memory consumption was 72.4 MB. Max. memory is 16.1 GB. [2021-11-07 02:17:04,759 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 60.8 MB. Free memory is still 41.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 485.61 ms. Allocated memory is still 60.8 MB. Free memory was 40.0 MB in the beginning and 39.5 MB in the end (delta: 510.2 kB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 81.08 ms. Allocated memory is still 60.8 MB. Free memory was 39.3 MB in the beginning and 36.8 MB in the end (delta: 2.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 85.14 ms. Allocated memory is still 60.8 MB. Free memory was 36.8 MB in the beginning and 34.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1774.91 ms. Allocated memory was 60.8 MB in the beginning and 77.6 MB in the end (delta: 16.8 MB). Free memory was 34.5 MB in the beginning and 43.4 MB in the end (delta: -9.0 MB). Peak memory consumption was 22.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 573596.52 ms. Allocated memory was 77.6 MB in the beginning and 123.7 MB in the end (delta: 46.1 MB). Free memory was 43.2 MB in the beginning and 76.2 MB in the end (delta: -33.0 MB). Peak memory consumption was 72.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 32.2s, 206 PlacesBefore, 47 PlacesAfterwards, 212 TransitionsBefore, 40 TransitionsAfterwards, 1824 CoEnabledTransitionPairs, 7 FixpointIterations, 133 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 23 TrivialYvCompositions, 8 ConcurrentYvCompositions, 13 ChoiceCompositions, 204 TotalNumberOfCompositions, 2970 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2380, positive: 2306, positive conditional: 0, positive unconditional: 2306, negative: 74, negative conditional: 0, negative unconditional: 74, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1191, positive: 1171, positive conditional: 0, positive unconditional: 1171, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1191, positive: 1170, positive conditional: 0, positive unconditional: 1170, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 21, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 961, positive: 104, positive conditional: 0, positive unconditional: 104, negative: 857, negative conditional: 0, negative unconditional: 857, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2380, positive: 1135, positive conditional: 0, positive unconditional: 1135, negative: 54, negative conditional: 0, negative unconditional: 54, unknown: 1191, unknown conditional: 0, unknown unconditional: 1191] , Statistics on independence cache: Total cache size (in pairs): 164, Positive cache size: 157, Positive conditional cache size: 0, Positive unconditional cache size: 157, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7 - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:312) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e555c15-5d03-4936-9240-50729a1c1036/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken