./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-dec-subseq.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_99e83d5b-f022-4190-a13b-1456099fdaaf/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e83d5b-f022-4190-a13b-1456099fdaaf/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_99e83d5b-f022-4190-a13b-1456099fdaaf/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e83d5b-f022-4190-a13b-1456099fdaaf/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e83d5b-f022-4190-a13b-1456099fdaaf/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_99e83d5b-f022-4190-a13b-1456099fdaaf/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 ecda181bd3fe1882667151a04232fb9d04292dd6ca3491d98fdc8de5d539856a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:48:51,881 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:48:51,884 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:48:51,970 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:48:51,971 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:48:51,977 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:48:51,979 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:48:51,984 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:48:51,987 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:48:51,995 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:48:51,997 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:48:51,999 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:48:52,000 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:48:52,003 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:48:52,006 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:48:52,013 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:48:52,015 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:48:52,017 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:48:52,020 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:48:52,028 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:48:52,031 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:48:52,033 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:48:52,036 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:48:52,037 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:48:52,044 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:48:52,045 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:48:52,045 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:48:52,047 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:48:52,048 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:48:52,050 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:48:52,050 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:48:52,052 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:48:52,054 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:48:52,056 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:48:52,059 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:48:52,059 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:48:52,060 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:48:52,060 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:48:52,061 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:48:52,062 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:48:52,062 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:48:52,063 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e83d5b-f022-4190-a13b-1456099fdaaf/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:48:52,121 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:48:52,122 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:48:52,124 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:48:52,124 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:48:52,124 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:48:52,124 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:48:52,125 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:48:52,125 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:48:52,133 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:48:52,133 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:48:52,134 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:48:52,135 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:48:52,135 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:48:52,135 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:48:52,136 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:48:52,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:48:52,137 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:48:52,137 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:48:52,137 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:48:52,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:48:52,138 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:48:52,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:48:52,139 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:48:52,139 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:48:52,139 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:48:52,139 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:48:52,140 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:48:52,140 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:48:52,140 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:48:52,142 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:48:52,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:48:52,143 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:48:52,143 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:48:52,144 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:48:52,144 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:48:52,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:48:52,145 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:48:52,145 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:48:52,145 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:48:52,145 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_99e83d5b-f022-4190-a13b-1456099fdaaf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e83d5b-f022-4190-a13b-1456099fdaaf/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ecda181bd3fe1882667151a04232fb9d04292dd6ca3491d98fdc8de5d539856a [2021-11-07 01:48:52,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:48:52,559 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:48:52,562 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:48:52,564 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:48:52,564 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:48:52,566 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e83d5b-f022-4190-a13b-1456099fdaaf/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c [2021-11-07 01:48:52,667 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e83d5b-f022-4190-a13b-1456099fdaaf/bin/utaipan-UUZaoUuFF8/data/483d3d8e5/d280b956ea3343838df3d5d9be2ab9c6/FLAG2c21bc621 [2021-11-07 01:48:53,356 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:48:53,360 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e83d5b-f022-4190-a13b-1456099fdaaf/sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c [2021-11-07 01:48:53,376 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e83d5b-f022-4190-a13b-1456099fdaaf/bin/utaipan-UUZaoUuFF8/data/483d3d8e5/d280b956ea3343838df3d5d9be2ab9c6/FLAG2c21bc621 [2021-11-07 01:48:53,677 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e83d5b-f022-4190-a13b-1456099fdaaf/bin/utaipan-UUZaoUuFF8/data/483d3d8e5/d280b956ea3343838df3d5d9be2ab9c6 [2021-11-07 01:48:53,682 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:48:53,685 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:48:53,688 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:48:53,689 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:48:53,693 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:48:53,694 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:48:53" (1/1) ... [2021-11-07 01:48:53,698 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4079efb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:48:53, skipping insertion in model container [2021-11-07 01:48:53,699 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:48:53" (1/1) ... [2021-11-07 01:48:53,709 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:48:53,746 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:48:54,125 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_99e83d5b-f022-4190-a13b-1456099fdaaf/sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c[2924,2937] [2021-11-07 01:48:54,144 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:48:54,166 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 01:48:54,167 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7f56c37a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:48:54, skipping insertion in model container [2021-11-07 01:48:54,167 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:48:54,168 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:48:54,171 INFO L168 Benchmark]: Toolchain (without parser) took 484.46 ms. Allocated memory is still 109.1 MB. Free memory was 72.5 MB in the beginning and 84.4 MB in the end (delta: -11.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:48:54,174 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 109.1 MB. Free memory was 82.3 MB in the beginning and 82.3 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:48:54,177 INFO L168 Benchmark]: CACSL2BoogieTranslator took 480.06 ms. Allocated memory is still 109.1 MB. Free memory was 72.2 MB in the beginning and 84.4 MB in the end (delta: -12.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-07 01:48:54,180 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 109.1 MB. Free memory was 82.3 MB in the beginning and 82.3 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 480.06 ms. Allocated memory is still 109.1 MB. Free memory was 72.2 MB in the beginning and 84.4 MB in the end (delta: -12.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 116]: 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_99e83d5b-f022-4190-a13b-1456099fdaaf/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e83d5b-f022-4190-a13b-1456099fdaaf/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_99e83d5b-f022-4190-a13b-1456099fdaaf/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e83d5b-f022-4190-a13b-1456099fdaaf/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e83d5b-f022-4190-a13b-1456099fdaaf/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_99e83d5b-f022-4190-a13b-1456099fdaaf/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 ecda181bd3fe1882667151a04232fb9d04292dd6ca3491d98fdc8de5d539856a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:48:56,962 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:48:56,967 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:48:57,044 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:48:57,045 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:48:57,053 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:48:57,055 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:48:57,062 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:48:57,066 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:48:57,076 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:48:57,079 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:48:57,081 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:48:57,082 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:48:57,086 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:48:57,089 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:48:57,097 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:48:57,100 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:48:57,101 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:48:57,104 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:48:57,118 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:48:57,121 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:48:57,123 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:48:57,128 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:48:57,131 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:48:57,136 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:48:57,136 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:48:57,137 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:48:57,140 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:48:57,141 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:48:57,143 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:48:57,143 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:48:57,145 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:48:57,148 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:48:57,149 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:48:57,159 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:48:57,160 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:48:57,161 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:48:57,162 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:48:57,162 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:48:57,165 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:48:57,166 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:48:57,168 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e83d5b-f022-4190-a13b-1456099fdaaf/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:48:57,231 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:48:57,232 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:48:57,234 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:48:57,235 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:48:57,235 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:48:57,235 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:48:57,236 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:48:57,236 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:48:57,237 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:48:57,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:48:57,241 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:48:57,242 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:48:57,242 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:48:57,242 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:48:57,243 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:48:57,243 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:48:57,243 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:48:57,244 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:48:57,244 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:48:57,244 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:48:57,245 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:48:57,245 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:48:57,245 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:48:57,246 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:48:57,246 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:48:57,246 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:48:57,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:48:57,247 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:48:57,247 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:48:57,247 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:48:57,248 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:48:57,248 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:48:57,248 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:48:57,249 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:48:57,250 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:48:57,250 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_99e83d5b-f022-4190-a13b-1456099fdaaf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e83d5b-f022-4190-a13b-1456099fdaaf/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ecda181bd3fe1882667151a04232fb9d04292dd6ca3491d98fdc8de5d539856a [2021-11-07 01:48:57,722 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:48:57,762 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:48:57,766 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:48:57,767 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:48:57,768 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:48:57,772 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e83d5b-f022-4190-a13b-1456099fdaaf/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c [2021-11-07 01:48:57,867 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e83d5b-f022-4190-a13b-1456099fdaaf/bin/utaipan-UUZaoUuFF8/data/3eab4eda3/7a4c2882adc644e4bb3095c58ab0b63f/FLAGbb5ed57fe [2021-11-07 01:48:58,574 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:48:58,576 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e83d5b-f022-4190-a13b-1456099fdaaf/sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c [2021-11-07 01:48:58,584 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e83d5b-f022-4190-a13b-1456099fdaaf/bin/utaipan-UUZaoUuFF8/data/3eab4eda3/7a4c2882adc644e4bb3095c58ab0b63f/FLAGbb5ed57fe [2021-11-07 01:48:58,947 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e83d5b-f022-4190-a13b-1456099fdaaf/bin/utaipan-UUZaoUuFF8/data/3eab4eda3/7a4c2882adc644e4bb3095c58ab0b63f [2021-11-07 01:48:58,951 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:48:58,954 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:48:58,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:48:58,959 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:48:58,964 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:48:58,966 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:48:58" (1/1) ... [2021-11-07 01:48:58,967 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f913af0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:48:58, skipping insertion in model container [2021-11-07 01:48:58,968 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:48:58" (1/1) ... [2021-11-07 01:48:58,978 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:48:59,016 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:48:59,311 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_99e83d5b-f022-4190-a13b-1456099fdaaf/sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c[2924,2937] [2021-11-07 01:48:59,346 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:48:59,377 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:48:59,384 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:48:59,405 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_99e83d5b-f022-4190-a13b-1456099fdaaf/sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c[2924,2937] [2021-11-07 01:48:59,410 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:48:59,416 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:48:59,447 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_99e83d5b-f022-4190-a13b-1456099fdaaf/sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c[2924,2937] [2021-11-07 01:48:59,458 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:48:59,486 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:48:59,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:48:59 WrapperNode [2021-11-07 01:48:59,487 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:48:59,490 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:48:59,490 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:48:59,490 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:48:59,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:48:59" (1/1) ... [2021-11-07 01:48:59,511 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:48:59" (1/1) ... [2021-11-07 01:48:59,551 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:48:59,553 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:48:59,553 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:48:59,553 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:48:59,563 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:48:59" (1/1) ... [2021-11-07 01:48:59,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:48:59" (1/1) ... [2021-11-07 01:48:59,569 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:48:59" (1/1) ... [2021-11-07 01:48:59,570 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:48:59" (1/1) ... [2021-11-07 01:48:59,582 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:48:59" (1/1) ... [2021-11-07 01:48:59,588 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:48:59" (1/1) ... [2021-11-07 01:48:59,591 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:48:59" (1/1) ... [2021-11-07 01:48:59,596 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:48:59,597 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:48:59,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:48:59,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:48:59,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:48:59" (1/1) ... [2021-11-07 01:48:59,621 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:48:59,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e83d5b-f022-4190-a13b-1456099fdaaf/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:48:59,647 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e83d5b-f022-4190-a13b-1456099fdaaf/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:48:59,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e83d5b-f022-4190-a13b-1456099fdaaf/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:48:59,696 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-07 01:48:59,696 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-07 01:48:59,696 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-07 01:48:59,697 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-07 01:48:59,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:48:59,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:48:59,697 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-07 01:48:59,697 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-07 01:48:59,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:48:59,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:48:59,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:48:59,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:48:59,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:48:59,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:48:59,701 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-07 01:49:00,728 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:49:00,728 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-11-07 01:49:00,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:49:00 BoogieIcfgContainer [2021-11-07 01:49:00,731 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:49:00,733 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:49:00,734 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:49:00,737 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:49:00,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:48:58" (1/3) ... [2021-11-07 01:49:00,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6098100 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:49:00, skipping insertion in model container [2021-11-07 01:49:00,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:48:59" (2/3) ... [2021-11-07 01:49:00,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6098100 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:49:00, skipping insertion in model container [2021-11-07 01:49:00,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:49:00" (3/3) ... [2021-11-07 01:49:00,741 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-dec-subseq.wvr.c [2021-11-07 01:49:00,747 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-07 01:49:00,747 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:49:00,748 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:49:00,748 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-07 01:49:00,786 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,786 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,786 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,786 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,787 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,787 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,787 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,788 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,788 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,788 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,788 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,789 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,789 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,789 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,790 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,790 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,790 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,790 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,791 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,792 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,792 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,793 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,793 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,794 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,794 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,795 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,795 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,795 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,796 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,796 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,796 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,796 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,797 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,798 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,798 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,798 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,799 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,799 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,799 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,799 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,800 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,800 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,800 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,800 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,801 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,801 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,801 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,802 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,802 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,802 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,803 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,803 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,808 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,812 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,812 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,813 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,813 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,813 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,816 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,821 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,821 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,821 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,822 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,822 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,822 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,823 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,823 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,827 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,827 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:49:00,833 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-11-07 01:49:00,878 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:49:00,886 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:49:00,886 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-07 01:49:00,906 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-07 01:49:00,918 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 156 places, 164 transitions, 344 flow [2021-11-07 01:49:00,922 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 156 places, 164 transitions, 344 flow [2021-11-07 01:49:00,924 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 156 places, 164 transitions, 344 flow [2021-11-07 01:49:00,996 INFO L129 PetriNetUnfolder]: 15/162 cut-off events. [2021-11-07 01:49:00,996 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-07 01:49:01,001 INFO L84 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 162 events. 15/162 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 98 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 130. Up to 2 conditions per place. [2021-11-07 01:49:01,004 INFO L116 LiptonReduction]: Number of co-enabled transitions 690 [2021-11-07 01:49:18,546 INFO L131 LiptonReduction]: Checked pairs total: 1280 [2021-11-07 01:49:18,546 INFO L133 LiptonReduction]: Total number of compositions: 168 [2021-11-07 01:49:18,558 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 28 places, 26 transitions, 68 flow [2021-11-07 01:49:18,574 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 60 states, 59 states have (on average 2.406779661016949) internal successors, (142), 59 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:49:18,577 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 59 states have (on average 2.406779661016949) internal successors, (142), 59 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:49:18,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-07 01:49:18,585 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:49:18,585 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:49:18,586 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-07 01:49:18,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:49:18,592 INFO L85 PathProgramCache]: Analyzing trace with hash -312662771, now seen corresponding path program 1 times [2021-11-07 01:49:18,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:49:18,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1765298012] [2021-11-07 01:49:18,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:49:18,609 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:49:18,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e83d5b-f022-4190-a13b-1456099fdaaf/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:49:18,613 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e83d5b-f022-4190-a13b-1456099fdaaf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:49:18,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e83d5b-f022-4190-a13b-1456099fdaaf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:49:18,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:49:18,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:49:18,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:49:18,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:49:18,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:49:19,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:49:19,051 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:49:19,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1765298012] [2021-11-07 01:49:19,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1765298012] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:49:19,052 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:49:19,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-11-07 01:49:19,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030933567] [2021-11-07 01:49:19,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:49:19,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:49:19,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:49:19,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:49:19,084 INFO L87 Difference]: Start difference. First operand has 60 states, 59 states have (on average 2.406779661016949) internal successors, (142), 59 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:49:19,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:49:19,140 INFO L93 Difference]: Finished difference Result 89 states and 215 transitions. [2021-11-07 01:49:19,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:49:19,141 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 14 [2021-11-07 01:49:19,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:49:19,154 INFO L225 Difference]: With dead ends: 89 [2021-11-07 01:49:19,154 INFO L226 Difference]: Without dead ends: 74 [2021-11-07 01:49:19,155 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:49:19,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-11-07 01:49:19,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-11-07 01:49:19,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 2.4383561643835616) internal successors, (178), 73 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:49:19,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 178 transitions. [2021-11-07 01:49:19,202 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 178 transitions. Word has length 14 [2021-11-07 01:49:19,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:49:19,203 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 178 transitions. [2021-11-07 01:49:19,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:49:19,203 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 178 transitions. [2021-11-07 01:49:19,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-07 01:49:19,205 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:49:19,206 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:49:19,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e83d5b-f022-4190-a13b-1456099fdaaf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:49:19,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e83d5b-f022-4190-a13b-1456099fdaaf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:49:19,420 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-07 01:49:19,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:49:19,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1473599471, now seen corresponding path program 1 times [2021-11-07 01:49:19,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:49:19,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [14444276] [2021-11-07 01:49:19,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:49:19,422 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:49:19,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e83d5b-f022-4190-a13b-1456099fdaaf/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:49:19,423 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e83d5b-f022-4190-a13b-1456099fdaaf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:49:19,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e83d5b-f022-4190-a13b-1456099fdaaf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:49:19,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:49:19,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:49:19,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:49:19,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:49:19,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:49:19,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:49:19,961 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:49:19,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [14444276] [2021-11-07 01:49:19,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [14444276] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:49:19,962 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:49:19,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:49:19,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778106906] [2021-11-07 01:49:19,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:49:19,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:49:19,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:49:19,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:49:19,965 INFO L87 Difference]: Start difference. First operand 74 states and 178 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:49:20,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:49:20,230 INFO L93 Difference]: Finished difference Result 106 states and 241 transitions. [2021-11-07 01:49:20,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:49:20,231 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-07 01:49:20,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:49:20,233 INFO L225 Difference]: With dead ends: 106 [2021-11-07 01:49:20,233 INFO L226 Difference]: Without dead ends: 92 [2021-11-07 01:49:20,234 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:49:20,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-11-07 01:49:20,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-11-07 01:49:20,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 2.4175824175824174) internal successors, (220), 91 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:49:20,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 220 transitions. [2021-11-07 01:49:20,258 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 220 transitions. Word has length 15 [2021-11-07 01:49:20,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:49:20,259 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 220 transitions. [2021-11-07 01:49:20,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:49:20,260 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 220 transitions. [2021-11-07 01:49:20,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-07 01:49:20,263 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:49:20,263 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:49:20,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e83d5b-f022-4190-a13b-1456099fdaaf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:49:20,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e83d5b-f022-4190-a13b-1456099fdaaf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:49:20,471 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-07 01:49:20,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:49:20,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1861180711, now seen corresponding path program 1 times [2021-11-07 01:49:20,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:49:20,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [424221911] [2021-11-07 01:49:20,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:49:20,473 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:49:20,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e83d5b-f022-4190-a13b-1456099fdaaf/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:49:20,485 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e83d5b-f022-4190-a13b-1456099fdaaf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:49:20,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e83d5b-f022-4190-a13b-1456099fdaaf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:49:20,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:49:20,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:49:20,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:49:20,865 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:49:20,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:49:20,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:49:20,992 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:49:20,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [424221911] [2021-11-07 01:49:20,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [424221911] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:49:20,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:49:20,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 01:49:20,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658420335] [2021-11-07 01:49:20,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:49:20,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:49:20,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:49:20,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:49:20,996 INFO L87 Difference]: Start difference. First operand 92 states and 220 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:49:21,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:49:21,126 INFO L93 Difference]: Finished difference Result 113 states and 261 transitions. [2021-11-07 01:49:21,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:49:21,129 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 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 19 [2021-11-07 01:49:21,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:49:21,131 INFO L225 Difference]: With dead ends: 113 [2021-11-07 01:49:21,131 INFO L226 Difference]: Without dead ends: 93 [2021-11-07 01:49:21,132 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 32 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 01:49:21,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-11-07 01:49:21,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2021-11-07 01:49:21,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 2.402173913043478) internal successors, (221), 92 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:49:21,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 221 transitions. [2021-11-07 01:49:21,149 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 221 transitions. Word has length 19 [2021-11-07 01:49:21,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:49:21,150 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 221 transitions. [2021-11-07 01:49:21,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:49:21,150 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 221 transitions. [2021-11-07 01:49:21,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-07 01:49:21,157 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:49:21,158 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] [2021-11-07 01:49:21,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e83d5b-f022-4190-a13b-1456099fdaaf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:49:21,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e83d5b-f022-4190-a13b-1456099fdaaf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:49:21,358 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-07 01:49:21,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:49:21,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1272484122, now seen corresponding path program 1 times [2021-11-07 01:49:21,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:49:21,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [385421492] [2021-11-07 01:49:21,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:49:21,360 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:49:21,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e83d5b-f022-4190-a13b-1456099fdaaf/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:49:21,366 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e83d5b-f022-4190-a13b-1456099fdaaf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:49:21,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e83d5b-f022-4190-a13b-1456099fdaaf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:49:21,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:49:21,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 01:49:21,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:49:21,749 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:49:21,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:49:21,961 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:49:21,962 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:49:21,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [385421492] [2021-11-07 01:49:21,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [385421492] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-07 01:49:21,962 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 01:49:21,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2021-11-07 01:49:21,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651534664] [2021-11-07 01:49:21,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:49:21,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:49:21,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:49:21,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:49:21,965 INFO L87 Difference]: Start difference. First operand 93 states and 221 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:49:22,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:49:22,108 INFO L93 Difference]: Finished difference Result 132 states and 312 transitions. [2021-11-07 01:49:22,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:49:22,115 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-07 01:49:22,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:49:22,117 INFO L225 Difference]: With dead ends: 132 [2021-11-07 01:49:22,117 INFO L226 Difference]: Without dead ends: 132 [2021-11-07 01:49:22,118 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:49:22,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-11-07 01:49:22,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 94. [2021-11-07 01:49:22,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 2.3870967741935485) internal successors, (222), 93 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:49:22,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 222 transitions. [2021-11-07 01:49:22,137 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 222 transitions. Word has length 20 [2021-11-07 01:49:22,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:49:22,137 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 222 transitions. [2021-11-07 01:49:22,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:49:22,137 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 222 transitions. [2021-11-07 01:49:22,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-07 01:49:22,143 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:49:22,143 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] [2021-11-07 01:49:22,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e83d5b-f022-4190-a13b-1456099fdaaf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:49:22,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e83d5b-f022-4190-a13b-1456099fdaaf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:49:22,344 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-07 01:49:22,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:49:22,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1971068647, now seen corresponding path program 1 times [2021-11-07 01:49:22,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:49:22,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1215925365] [2021-11-07 01:49:22,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:49:22,346 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:49:22,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e83d5b-f022-4190-a13b-1456099fdaaf/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:49:22,347 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e83d5b-f022-4190-a13b-1456099fdaaf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:49:22,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e83d5b-f022-4190-a13b-1456099fdaaf/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:49:22,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:49:22,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-07 01:49:22,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:49:23,174 INFO L354 Elim1Store]: treesize reduction 289, result has 11.9 percent of original size [2021-11-07 01:49:23,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 52 [2021-11-07 01:49:27,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:27,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:27,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:27,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:27,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:27,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:29,095 INFO L354 Elim1Store]: treesize reduction 2125, result has 4.7 percent of original size [2021-11-07 01:49:29,096 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 117 treesize of output 149 [2021-11-07 01:49:34,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:34,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:34,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:34,302 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:49:34,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:34,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:34,306 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:49:34,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:49:34,309 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:49:35,351 INFO L354 Elim1Store]: treesize reduction 916, result has 17.7 percent of original size [2021-11-07 01:49:35,352 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 36 case distinctions, treesize of input 103 treesize of output 263 [2021-11-07 01:49:47,532 INFO L354 Elim1Store]: treesize reduction 213, result has 68.4 percent of original size [2021-11-07 01:49:47,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 6 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 247 treesize of output 538