./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-inc-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_a2e07967-a58a-4367-8043-2ff1147b8033/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e07967-a58a-4367-8043-2ff1147b8033/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_a2e07967-a58a-4367-8043-2ff1147b8033/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e07967-a58a-4367-8043-2ff1147b8033/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e07967-a58a-4367-8043-2ff1147b8033/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_a2e07967-a58a-4367-8043-2ff1147b8033/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 cd94157895dc71e9f24fce5dbc4a71d4e4b55c4da9be28372139a3001decae0a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:11:18,934 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:11:18,936 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:11:18,984 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:11:18,985 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:11:18,989 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:11:18,991 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:11:18,995 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:11:18,998 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:11:19,004 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:11:19,005 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:11:19,007 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:11:19,007 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:11:19,010 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:11:19,012 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:11:19,016 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:11:19,018 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:11:19,020 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:11:19,022 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:11:19,030 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:11:19,032 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:11:19,033 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:11:19,036 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:11:19,037 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:11:19,046 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:11:19,047 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:11:19,047 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:11:19,049 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:11:19,050 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:11:19,051 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:11:19,052 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:11:19,053 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:11:19,055 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:11:19,056 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:11:19,058 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:11:19,058 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:11:19,059 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:11:19,059 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:11:19,059 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:11:19,060 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:11:19,061 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:11:19,061 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e07967-a58a-4367-8043-2ff1147b8033/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:11:19,108 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:11:19,111 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:11:19,113 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:11:19,113 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:11:19,113 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:11:19,113 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:11:19,114 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:11:19,114 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:11:19,120 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:11:19,120 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:11:19,121 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:11:19,122 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:11:19,122 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:11:19,122 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:11:19,123 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:11:19,123 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:11:19,124 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:11:19,124 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:11:19,124 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:11:19,125 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:11:19,126 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:11:19,131 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:11:19,132 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:11:19,133 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:11:19,133 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:11:19,133 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:11:19,134 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:11:19,134 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:11:19,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:11:19,134 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:11:19,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:11:19,135 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:11:19,135 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:11:19,135 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:11:19,136 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:11:19,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:11:19,136 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:11:19,136 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:11:19,137 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:11:19,137 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_a2e07967-a58a-4367-8043-2ff1147b8033/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e07967-a58a-4367-8043-2ff1147b8033/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd94157895dc71e9f24fce5dbc4a71d4e4b55c4da9be28372139a3001decae0a [2021-11-07 01:11:19,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:11:19,475 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:11:19,477 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:11:19,479 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:11:19,480 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:11:19,481 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e07967-a58a-4367-8043-2ff1147b8033/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c [2021-11-07 01:11:19,553 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e07967-a58a-4367-8043-2ff1147b8033/bin/utaipan-UUZaoUuFF8/data/167e77c30/20190ff53761431fb15f19906c209304/FLAGc6e7a3513 [2021-11-07 01:11:20,149 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:11:20,151 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e07967-a58a-4367-8043-2ff1147b8033/sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c [2021-11-07 01:11:20,167 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e07967-a58a-4367-8043-2ff1147b8033/bin/utaipan-UUZaoUuFF8/data/167e77c30/20190ff53761431fb15f19906c209304/FLAGc6e7a3513 [2021-11-07 01:11:20,454 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e07967-a58a-4367-8043-2ff1147b8033/bin/utaipan-UUZaoUuFF8/data/167e77c30/20190ff53761431fb15f19906c209304 [2021-11-07 01:11:20,457 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:11:20,460 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:11:20,462 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:11:20,462 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:11:20,466 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:11:20,467 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:11:20" (1/1) ... [2021-11-07 01:11:20,469 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59c5f050 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:20, skipping insertion in model container [2021-11-07 01:11:20,469 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:11:20" (1/1) ... [2021-11-07 01:11:20,477 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:11:20,497 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:11:20,722 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_a2e07967-a58a-4367-8043-2ff1147b8033/sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c[2924,2937] [2021-11-07 01:11:20,730 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:11:20,739 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 01:11:20,739 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4e9cc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:20, skipping insertion in model container [2021-11-07 01:11:20,740 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:11:20,740 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:11:20,743 INFO L168 Benchmark]: Toolchain (without parser) took 281.56 ms. Allocated memory is still 113.2 MB. Free memory was 75.0 MB in the beginning and 87.6 MB in the end (delta: -12.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:11:20,744 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 113.2 MB. Free memory was 91.3 MB in the beginning and 91.2 MB in the end (delta: 72.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:11:20,745 INFO L168 Benchmark]: CACSL2BoogieTranslator took 278.31 ms. Allocated memory is still 113.2 MB. Free memory was 74.8 MB in the beginning and 87.6 MB in the end (delta: -12.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:11:20,747 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 113.2 MB. Free memory was 91.3 MB in the beginning and 91.2 MB in the end (delta: 72.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 278.31 ms. Allocated memory is still 113.2 MB. Free memory was 74.8 MB in the beginning and 87.6 MB in the end (delta: -12.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 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_a2e07967-a58a-4367-8043-2ff1147b8033/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e07967-a58a-4367-8043-2ff1147b8033/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_a2e07967-a58a-4367-8043-2ff1147b8033/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e07967-a58a-4367-8043-2ff1147b8033/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e07967-a58a-4367-8043-2ff1147b8033/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_a2e07967-a58a-4367-8043-2ff1147b8033/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 cd94157895dc71e9f24fce5dbc4a71d4e4b55c4da9be28372139a3001decae0a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:11:23,060 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:11:23,063 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:11:23,120 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:11:23,121 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:11:23,126 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:11:23,128 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:11:23,133 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:11:23,136 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:11:23,144 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:11:23,145 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:11:23,147 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:11:23,148 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:11:23,151 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:11:23,153 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:11:23,157 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:11:23,159 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:11:23,161 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:11:23,163 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:11:23,172 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:11:23,174 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:11:23,176 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:11:23,180 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:11:23,182 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:11:23,192 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:11:23,192 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:11:23,193 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:11:23,195 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:11:23,196 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:11:23,197 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:11:23,198 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:11:23,199 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:11:23,201 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:11:23,202 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:11:23,204 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:11:23,205 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:11:23,206 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:11:23,206 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:11:23,207 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:11:23,209 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:11:23,210 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:11:23,211 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e07967-a58a-4367-8043-2ff1147b8033/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:11:23,256 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:11:23,256 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:11:23,258 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:11:23,258 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:11:23,258 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:11:23,258 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:11:23,259 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:11:23,259 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:11:23,259 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:11:23,261 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:11:23,262 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:11:23,262 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:11:23,262 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:11:23,262 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:11:23,263 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:11:23,263 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:11:23,263 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:11:23,263 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:11:23,264 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:11:23,264 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:11:23,264 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:11:23,264 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:11:23,264 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:11:23,265 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:11:23,265 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:11:23,265 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:11:23,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:11:23,266 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:11:23,266 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:11:23,266 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:11:23,266 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:11:23,267 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:11:23,267 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:11:23,267 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:11:23,268 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:11:23,268 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_a2e07967-a58a-4367-8043-2ff1147b8033/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e07967-a58a-4367-8043-2ff1147b8033/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd94157895dc71e9f24fce5dbc4a71d4e4b55c4da9be28372139a3001decae0a [2021-11-07 01:11:23,718 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:11:23,751 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:11:23,753 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:11:23,755 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:11:23,756 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:11:23,757 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e07967-a58a-4367-8043-2ff1147b8033/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c [2021-11-07 01:11:23,836 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e07967-a58a-4367-8043-2ff1147b8033/bin/utaipan-UUZaoUuFF8/data/250e8e073/61b4224a6eb94db9914c76630069fac8/FLAG6cdd9605f [2021-11-07 01:11:24,305 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:11:24,306 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e07967-a58a-4367-8043-2ff1147b8033/sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c [2021-11-07 01:11:24,319 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e07967-a58a-4367-8043-2ff1147b8033/bin/utaipan-UUZaoUuFF8/data/250e8e073/61b4224a6eb94db9914c76630069fac8/FLAG6cdd9605f [2021-11-07 01:11:24,699 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e07967-a58a-4367-8043-2ff1147b8033/bin/utaipan-UUZaoUuFF8/data/250e8e073/61b4224a6eb94db9914c76630069fac8 [2021-11-07 01:11:24,703 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:11:24,706 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:11:24,711 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:11:24,712 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:11:24,715 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:11:24,717 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:11:24" (1/1) ... [2021-11-07 01:11:24,718 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@694ef058 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:24, skipping insertion in model container [2021-11-07 01:11:24,718 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:11:24" (1/1) ... [2021-11-07 01:11:24,731 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:11:24,762 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:11:24,911 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_a2e07967-a58a-4367-8043-2ff1147b8033/sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c[2924,2937] [2021-11-07 01:11:24,920 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:11:24,952 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:11:24,974 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:11:24,994 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_a2e07967-a58a-4367-8043-2ff1147b8033/sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c[2924,2937] [2021-11-07 01:11:24,999 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:11:25,012 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:11:25,100 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_a2e07967-a58a-4367-8043-2ff1147b8033/sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c[2924,2937] [2021-11-07 01:11:25,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:11:25,134 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:11:25,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:25 WrapperNode [2021-11-07 01:11:25,135 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:11:25,136 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:11:25,136 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:11:25,136 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:11:25,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:25" (1/1) ... [2021-11-07 01:11:25,154 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:25" (1/1) ... [2021-11-07 01:11:25,180 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:11:25,190 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:11:25,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:11:25,191 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:11:25,200 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:25" (1/1) ... [2021-11-07 01:11:25,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:25" (1/1) ... [2021-11-07 01:11:25,218 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:25" (1/1) ... [2021-11-07 01:11:25,219 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:25" (1/1) ... [2021-11-07 01:11:25,229 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:25" (1/1) ... [2021-11-07 01:11:25,254 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:25" (1/1) ... [2021-11-07 01:11:25,257 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:25" (1/1) ... [2021-11-07 01:11:25,261 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:11:25,267 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:11:25,267 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:11:25,267 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:11:25,268 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:25" (1/1) ... [2021-11-07 01:11:25,275 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:11:25,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e07967-a58a-4367-8043-2ff1147b8033/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:11:25,308 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e07967-a58a-4367-8043-2ff1147b8033/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:11:25,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e07967-a58a-4367-8043-2ff1147b8033/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:11:25,358 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-07 01:11:25,358 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-07 01:11:25,358 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-07 01:11:25,360 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-07 01:11:25,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:11:25,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:11:25,360 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-07 01:11:25,361 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-07 01:11:25,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:11:25,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:11:25,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:11:25,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:11:25,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:11:25,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:11:25,363 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 01:11:26,310 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:11:26,310 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-11-07 01:11:26,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:11:26 BoogieIcfgContainer [2021-11-07 01:11:26,313 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:11:26,314 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:11:26,315 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:11:26,317 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:11:26,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:11:24" (1/3) ... [2021-11-07 01:11:26,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c6a4145 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:11:26, skipping insertion in model container [2021-11-07 01:11:26,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:25" (2/3) ... [2021-11-07 01:11:26,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c6a4145 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:11:26, skipping insertion in model container [2021-11-07 01:11:26,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:11:26" (3/3) ... [2021-11-07 01:11:26,320 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-inc-subseq.wvr.c [2021-11-07 01:11:26,325 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-07 01:11:26,326 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:11:26,326 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:11:26,326 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-07 01:11:26,370 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,370 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,370 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,371 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,371 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,371 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,371 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,372 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,372 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,372 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,372 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,373 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,373 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,373 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,373 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,373 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,374 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,374 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,374 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,374 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,374 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,375 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,375 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,375 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,375 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,375 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,376 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,376 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,376 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,376 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,377 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,377 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,377 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,378 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,378 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,378 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,378 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,379 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,379 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,379 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,379 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,379 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,380 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,380 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,380 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,380 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,380 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,381 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,381 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,381 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,381 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,390 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,398 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,398 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,399 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,399 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,399 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,399 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,400 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,405 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,406 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,406 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,407 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,407 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,407 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,407 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,408 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,408 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,408 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:11:26,416 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-11-07 01:11:26,474 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:11:26,481 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 01:11:26,481 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-07 01:11:26,499 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-07 01:11:26,532 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 156 places, 164 transitions, 344 flow [2021-11-07 01:11:26,535 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 156 places, 164 transitions, 344 flow [2021-11-07 01:11:26,537 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 156 places, 164 transitions, 344 flow [2021-11-07 01:11:26,610 INFO L129 PetriNetUnfolder]: 15/162 cut-off events. [2021-11-07 01:11:26,611 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-07 01:11:26,615 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 01:11:26,619 INFO L116 LiptonReduction]: Number of co-enabled transitions 690 [2021-11-07 01:11:41,631 INFO L131 LiptonReduction]: Checked pairs total: 1280 [2021-11-07 01:11:41,631 INFO L133 LiptonReduction]: Total number of compositions: 168 [2021-11-07 01:11:41,642 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 28 places, 26 transitions, 68 flow [2021-11-07 01:11:41,659 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 01:11:41,662 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 01:11:41,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-07 01:11:41,669 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:11:41,670 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:11:41,671 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-07 01:11:41,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:11:41,677 INFO L85 PathProgramCache]: Analyzing trace with hash -312662771, now seen corresponding path program 1 times [2021-11-07 01:11:41,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:11:41,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2066881884] [2021-11-07 01:11:41,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:11:41,692 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:11:41,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e07967-a58a-4367-8043-2ff1147b8033/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:11:41,697 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e07967-a58a-4367-8043-2ff1147b8033/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:11:41,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e07967-a58a-4367-8043-2ff1147b8033/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:11:41,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:11:41,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:11:41,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:11:41,917 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 01:11:41,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:11:42,031 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 01:11:42,032 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:11:42,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2066881884] [2021-11-07 01:11:42,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2066881884] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:11:42,033 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:11:42,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-11-07 01:11:42,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490756645] [2021-11-07 01:11:42,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:11:42,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:11:42,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:11:42,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:11:42,085 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 01:11:42,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:11:42,126 INFO L93 Difference]: Finished difference Result 89 states and 215 transitions. [2021-11-07 01:11:42,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:11:42,128 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 01:11:42,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:11:42,139 INFO L225 Difference]: With dead ends: 89 [2021-11-07 01:11:42,139 INFO L226 Difference]: Without dead ends: 74 [2021-11-07 01:11:42,140 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 01:11:42,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-11-07 01:11:42,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-11-07 01:11:42,196 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 01:11:42,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 178 transitions. [2021-11-07 01:11:42,203 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 178 transitions. Word has length 14 [2021-11-07 01:11:42,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:11:42,205 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 178 transitions. [2021-11-07 01:11:42,206 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 01:11:42,206 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 178 transitions. [2021-11-07 01:11:42,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-07 01:11:42,210 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:11:42,211 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:11:42,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e07967-a58a-4367-8043-2ff1147b8033/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:11:42,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e07967-a58a-4367-8043-2ff1147b8033/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:11:42,423 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-07 01:11:42,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:11:42,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1473599471, now seen corresponding path program 1 times [2021-11-07 01:11:42,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:11:42,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1351901157] [2021-11-07 01:11:42,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:11:42,425 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:11:42,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e07967-a58a-4367-8043-2ff1147b8033/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:11:42,426 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e07967-a58a-4367-8043-2ff1147b8033/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:11:42,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e07967-a58a-4367-8043-2ff1147b8033/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:11:42,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:11:42,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:11:42,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:11:42,712 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 01:11:42,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:11:42,849 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 01:11:42,849 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:11:42,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1351901157] [2021-11-07 01:11:42,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1351901157] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:11:42,850 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:11:42,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:11:42,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612696843] [2021-11-07 01:11:42,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:11:42,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:11:42,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:11:42,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:11:42,853 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 01:11:43,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:11:43,083 INFO L93 Difference]: Finished difference Result 106 states and 241 transitions. [2021-11-07 01:11:43,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:11:43,083 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 01:11:43,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:11:43,085 INFO L225 Difference]: With dead ends: 106 [2021-11-07 01:11:43,085 INFO L226 Difference]: Without dead ends: 92 [2021-11-07 01:11:43,086 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 01:11:43,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-11-07 01:11:43,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-11-07 01:11:43,096 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 01:11:43,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 220 transitions. [2021-11-07 01:11:43,098 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 220 transitions. Word has length 15 [2021-11-07 01:11:43,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:11:43,098 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 220 transitions. [2021-11-07 01:11:43,099 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 01:11:43,099 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 220 transitions. [2021-11-07 01:11:43,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-07 01:11:43,100 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:11:43,101 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 01:11:43,116 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e07967-a58a-4367-8043-2ff1147b8033/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-07 01:11:43,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e07967-a58a-4367-8043-2ff1147b8033/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:11:43,317 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-07 01:11:43,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:11:43,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1861180711, now seen corresponding path program 1 times [2021-11-07 01:11:43,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:11:43,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [924092131] [2021-11-07 01:11:43,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:11:43,322 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:11:43,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e07967-a58a-4367-8043-2ff1147b8033/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:11:43,326 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e07967-a58a-4367-8043-2ff1147b8033/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:11:43,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e07967-a58a-4367-8043-2ff1147b8033/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:11:43,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:11:43,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:11:43,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:11:43,679 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 01:11:43,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:11:43,770 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 01:11:43,770 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:11:43,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [924092131] [2021-11-07 01:11:43,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [924092131] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:11:43,771 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:11:43,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 01:11:43,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014637414] [2021-11-07 01:11:43,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:11:43,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:11:43,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:11:43,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:11:43,773 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 01:11:43,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:11:43,872 INFO L93 Difference]: Finished difference Result 113 states and 261 transitions. [2021-11-07 01:11:43,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:11:43,874 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 01:11:43,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:11:43,876 INFO L225 Difference]: With dead ends: 113 [2021-11-07 01:11:43,877 INFO L226 Difference]: Without dead ends: 93 [2021-11-07 01:11:43,877 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 01:11:43,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-11-07 01:11:43,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2021-11-07 01:11:43,888 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 01:11:43,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 221 transitions. [2021-11-07 01:11:43,890 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 221 transitions. Word has length 19 [2021-11-07 01:11:43,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:11:43,891 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 221 transitions. [2021-11-07 01:11:43,891 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 01:11:43,891 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 221 transitions. [2021-11-07 01:11:43,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-07 01:11:43,893 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:11:43,894 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 01:11:43,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e07967-a58a-4367-8043-2ff1147b8033/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:11:44,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e07967-a58a-4367-8043-2ff1147b8033/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:11:44,102 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-07 01:11:44,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:11:44,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1272484122, now seen corresponding path program 1 times [2021-11-07 01:11:44,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:11:44,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1491007040] [2021-11-07 01:11:44,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:11:44,104 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:11:44,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e07967-a58a-4367-8043-2ff1147b8033/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:11:44,105 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e07967-a58a-4367-8043-2ff1147b8033/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:11:44,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e07967-a58a-4367-8043-2ff1147b8033/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:11:44,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:11:44,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 01:11:44,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:11:44,467 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 01:11:44,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:11:44,670 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 01:11:44,671 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:11:44,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1491007040] [2021-11-07 01:11:44,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1491007040] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-07 01:11:44,671 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 01:11:44,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2021-11-07 01:11:44,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018056304] [2021-11-07 01:11:44,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:11:44,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:11:44,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:11:44,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:11:44,673 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 01:11:44,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:11:44,807 INFO L93 Difference]: Finished difference Result 132 states and 312 transitions. [2021-11-07 01:11:44,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:11:44,813 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 01:11:44,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:11:44,815 INFO L225 Difference]: With dead ends: 132 [2021-11-07 01:11:44,815 INFO L226 Difference]: Without dead ends: 132 [2021-11-07 01:11:44,815 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 01:11:44,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-11-07 01:11:44,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 94. [2021-11-07 01:11:44,833 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 01:11:44,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 222 transitions. [2021-11-07 01:11:44,835 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 222 transitions. Word has length 20 [2021-11-07 01:11:44,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:11:44,836 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 222 transitions. [2021-11-07 01:11:44,836 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 01:11:44,836 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 222 transitions. [2021-11-07 01:11:44,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-07 01:11:44,842 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:11:44,842 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 01:11:44,855 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e07967-a58a-4367-8043-2ff1147b8033/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-07 01:11:45,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e07967-a58a-4367-8043-2ff1147b8033/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:11:45,056 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-07 01:11:45,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:11:45,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1971068647, now seen corresponding path program 1 times [2021-11-07 01:11:45,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:11:45,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [399809494] [2021-11-07 01:11:45,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:11:45,059 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:11:45,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e07967-a58a-4367-8043-2ff1147b8033/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:11:45,060 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e07967-a58a-4367-8043-2ff1147b8033/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:11:45,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e07967-a58a-4367-8043-2ff1147b8033/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:11:45,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:11:45,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-07 01:11:45,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:11:45,762 INFO L354 Elim1Store]: treesize reduction 289, result has 11.9 percent of original size [2021-11-07 01:11:45,763 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 01:11:49,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:11:49,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:11:49,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:11:49,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:11:49,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:11:49,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:11:57,305 WARN L207 SmtUtils]: Spent 7.34 s on a formula simplification. DAG size of input: 343 DAG size of output: 56 [2021-11-07 01:11:57,311 INFO L354 Elim1Store]: treesize reduction 2125, result has 4.7 percent of original size [2021-11-07 01:11:57,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 39 case distinctions, treesize of input 117 treesize of output 149 [2021-11-07 01:11:59,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:11:59,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:11:59,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:11:59,250 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:11:59,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:11:59,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:11:59,253 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:11:59,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:11:59,256 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:12:00,151 INFO L354 Elim1Store]: treesize reduction 916, result has 17.7 percent of original size [2021-11-07 01:12:00,153 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 01:12:11,281 INFO L354 Elim1Store]: treesize reduction 213, result has 68.4 percent of original size [2021-11-07 01:12:11,282 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