./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE --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 b234d4da66d13ad0276052776f62378bdf65c30ede66b703a7e2884e6ce87193 ............................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE --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 b234d4da66d13ad0276052776f62378bdf65c30ede66b703a7e2884e6ce87193 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 09:56:57,047 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 09:56:57,050 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 09:56:57,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 09:56:57,086 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 09:56:57,087 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 09:56:57,089 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 09:56:57,092 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 09:56:57,095 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 09:56:57,096 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 09:56:57,098 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 09:56:57,100 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 09:56:57,100 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 09:56:57,102 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 09:56:57,104 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 09:56:57,106 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 09:56:57,107 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 09:56:57,109 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 09:56:57,112 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 09:56:57,115 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 09:56:57,117 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 09:56:57,119 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 09:56:57,121 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 09:56:57,122 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 09:56:57,127 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 09:56:57,127 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 09:56:57,128 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 09:56:57,129 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 09:56:57,130 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 09:56:57,132 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 09:56:57,132 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 09:56:57,134 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 09:56:57,135 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 09:56:57,136 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 09:56:57,138 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 09:56:57,138 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 09:56:57,139 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 09:56:57,140 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 09:56:57,140 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 09:56:57,142 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 09:56:57,143 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 09:56:57,144 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 09:56:57,175 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 09:56:57,176 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 09:56:57,177 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 09:56:57,177 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 09:56:57,177 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 09:56:57,178 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 09:56:57,178 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 09:56:57,178 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 09:56:57,179 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 09:56:57,179 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 09:56:57,179 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 09:56:57,179 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 09:56:57,180 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 09:56:57,180 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 09:56:57,180 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 09:56:57,181 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 09:56:57,181 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 09:56:57,182 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 09:56:57,182 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 09:56:57,182 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 09:56:57,182 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 09:56:57,183 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 09:56:57,183 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 09:56:57,183 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 09:56:57,183 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 09:56:57,183 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 09:56:57,184 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 09:56:57,184 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 09:56:57,184 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 09:56:57,184 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 09:56:57,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:56:57,185 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 09:56:57,185 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 09:56:57,185 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 09:56:57,186 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 09:56:57,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 09:56:57,186 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 09:56:57,186 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 09:56:57,187 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 09:56:57,187 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_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b234d4da66d13ad0276052776f62378bdf65c30ede66b703a7e2884e6ce87193 [2021-10-24 09:56:57,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 09:56:57,480 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 09:56:57,484 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 09:56:57,485 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 09:56:57,486 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 09:56:57,488 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c [2021-10-24 09:56:57,600 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/data/bc2af57d1/6a0315ff17d945c893309af15cc5ef73/FLAG992a8560a [2021-10-24 09:56:58,083 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 09:56:58,083 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c [2021-10-24 09:56:58,093 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/data/bc2af57d1/6a0315ff17d945c893309af15cc5ef73/FLAG992a8560a [2021-10-24 09:56:58,447 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/data/bc2af57d1/6a0315ff17d945c893309af15cc5ef73 [2021-10-24 09:56:58,450 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 09:56:58,452 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 09:56:58,454 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 09:56:58,455 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 09:56:58,464 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 09:56:58,464 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:56:58" (1/1) ... [2021-10-24 09:56:58,474 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39729e31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:58, skipping insertion in model container [2021-10-24 09:56:58,475 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:56:58" (1/1) ... [2021-10-24 09:56:58,481 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 09:56:58,511 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 09:56:58,768 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_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c[3648,3661] [2021-10-24 09:56:58,780 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:56:58,792 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) [2021-10-24 09:56:58,792 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@24cddcca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:58, skipping insertion in model container [2021-10-24 09:56:58,793 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 09:56:58,793 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-24 09:56:58,796 INFO L168 Benchmark]: Toolchain (without parser) took 342.45 ms. Allocated memory is still 96.5 MB. Free memory was 62.6 MB in the beginning and 71.1 MB in the end (delta: -8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 09:56:58,797 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 96.5 MB. Free memory is still 49.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:56:58,798 INFO L168 Benchmark]: CACSL2BoogieTranslator took 339.04 ms. Allocated memory is still 96.5 MB. Free memory was 62.4 MB in the beginning and 71.1 MB in the end (delta: -8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 09:56:58,801 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 96.5 MB. Free memory is still 49.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 339.04 ms. Allocated memory is still 96.5 MB. Free memory was 62.4 MB in the beginning and 71.1 MB in the end (delta: -8.6 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: 139]: 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... ### Bit-precise run ### This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 09:57:01,346 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 09:57:01,349 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 09:57:01,386 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 09:57:01,387 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 09:57:01,388 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 09:57:01,390 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 09:57:01,393 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 09:57:01,396 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 09:57:01,397 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 09:57:01,399 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 09:57:01,400 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 09:57:01,401 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 09:57:01,403 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 09:57:01,405 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 09:57:01,406 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 09:57:01,407 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 09:57:01,409 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 09:57:01,411 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 09:57:01,414 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 09:57:01,416 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 09:57:01,418 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 09:57:01,420 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 09:57:01,421 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 09:57:01,425 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 09:57:01,426 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 09:57:01,426 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 09:57:01,428 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 09:57:01,428 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 09:57:01,430 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 09:57:01,430 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 09:57:01,432 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 09:57:01,433 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 09:57:01,434 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 09:57:01,436 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 09:57:01,436 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 09:57:01,437 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 09:57:01,438 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 09:57:01,439 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 09:57:01,440 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 09:57:01,441 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 09:57:01,443 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-24 09:57:01,475 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 09:57:01,475 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 09:57:01,476 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 09:57:01,477 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 09:57:01,477 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 09:57:01,477 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 09:57:01,478 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 09:57:01,478 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 09:57:01,478 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 09:57:01,479 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 09:57:01,479 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 09:57:01,480 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 09:57:01,480 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 09:57:01,480 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 09:57:01,481 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 09:57:01,481 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 09:57:01,481 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 09:57:01,481 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-24 09:57:01,482 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-24 09:57:01,482 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 09:57:01,482 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 09:57:01,483 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 09:57:01,483 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 09:57:01,483 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 09:57:01,483 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-24 09:57:01,484 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 09:57:01,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:57:01,484 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 09:57:01,485 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 09:57:01,485 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 09:57:01,485 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-24 09:57:01,485 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-24 09:57:01,486 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 09:57:01,486 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 09:57:01,486 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 09:57:01,486 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_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b234d4da66d13ad0276052776f62378bdf65c30ede66b703a7e2884e6ce87193 [2021-10-24 09:57:01,965 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 09:57:01,993 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 09:57:02,004 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 09:57:02,005 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 09:57:02,006 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 09:57:02,010 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c [2021-10-24 09:57:02,102 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/data/b3ce8debc/69a104b9cd674f5b8d9a3f7487cbd3b1/FLAG13655a892 [2021-10-24 09:57:02,702 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 09:57:02,702 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c [2021-10-24 09:57:02,715 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/data/b3ce8debc/69a104b9cd674f5b8d9a3f7487cbd3b1/FLAG13655a892 [2021-10-24 09:57:03,015 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/data/b3ce8debc/69a104b9cd674f5b8d9a3f7487cbd3b1 [2021-10-24 09:57:03,021 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 09:57:03,023 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 09:57:03,025 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 09:57:03,025 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 09:57:03,029 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 09:57:03,030 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:57:03" (1/1) ... [2021-10-24 09:57:03,034 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52a2f08b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:03, skipping insertion in model container [2021-10-24 09:57:03,034 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:57:03" (1/1) ... [2021-10-24 09:57:03,047 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 09:57:03,091 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 09:57:03,326 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_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c[3648,3661] [2021-10-24 09:57:03,340 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:57:03,354 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-24 09:57:03,360 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 09:57:03,385 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_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c[3648,3661] [2021-10-24 09:57:03,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:57:03,444 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 09:57:03,501 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_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c[3648,3661] [2021-10-24 09:57:03,507 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:57:03,527 INFO L208 MainTranslator]: Completed translation [2021-10-24 09:57:03,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:03 WrapperNode [2021-10-24 09:57:03,528 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 09:57:03,529 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 09:57:03,529 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 09:57:03,530 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 09:57:03,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:03" (1/1) ... [2021-10-24 09:57:03,552 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:03" (1/1) ... [2021-10-24 09:57:03,589 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 09:57:03,590 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 09:57:03,590 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 09:57:03,597 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 09:57:03,606 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:03" (1/1) ... [2021-10-24 09:57:03,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:03" (1/1) ... [2021-10-24 09:57:03,614 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:03" (1/1) ... [2021-10-24 09:57:03,617 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:03" (1/1) ... [2021-10-24 09:57:03,645 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:03" (1/1) ... [2021-10-24 09:57:03,665 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:03" (1/1) ... [2021-10-24 09:57:03,672 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:03" (1/1) ... [2021-10-24 09:57:03,677 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 09:57:03,683 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 09:57:03,684 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 09:57:03,684 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 09:57:03,685 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:03" (1/1) ... [2021-10-24 09:57:03,692 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:57:03,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:57:03,721 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 09:57:03,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 09:57:03,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-24 09:57:03,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 09:57:03,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-24 09:57:03,776 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-24 09:57:03,777 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-24 09:57:03,777 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-24 09:57:03,777 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-24 09:57:03,777 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-24 09:57:03,778 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-24 09:57:03,778 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-10-24 09:57:03,778 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-10-24 09:57:03,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-24 09:57:03,779 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-24 09:57:03,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-24 09:57:03,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 09:57:03,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 09:57:03,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-24 09:57:03,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-24 09:57:03,782 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-24 09:57:05,752 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 09:57:05,752 INFO L299 CfgBuilder]: Removed 54 assume(true) statements. [2021-10-24 09:57:05,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:57:05 BoogieIcfgContainer [2021-10-24 09:57:05,756 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 09:57:05,758 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 09:57:05,758 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 09:57:05,761 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 09:57:05,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:57:03" (1/3) ... [2021-10-24 09:57:05,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@201d00b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:57:05, skipping insertion in model container [2021-10-24 09:57:05,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:03" (2/3) ... [2021-10-24 09:57:05,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@201d00b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:57:05, skipping insertion in model container [2021-10-24 09:57:05,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:57:05" (3/3) ... [2021-10-24 09:57:05,777 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult.wvr.c [2021-10-24 09:57:05,784 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-24 09:57:05,784 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 09:57:05,785 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 09:57:05,785 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-24 09:57:05,860 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,860 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,861 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,861 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,861 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,861 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,862 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,862 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,862 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,862 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,863 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,863 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,864 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,864 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,865 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,866 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,866 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,867 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,868 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,868 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,868 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,869 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,869 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,869 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,870 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,870 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,870 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,870 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,872 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,872 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,873 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,873 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,874 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,874 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,874 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,874 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,874 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,875 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,875 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,875 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,876 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,876 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,877 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,877 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,877 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,877 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,878 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,878 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,878 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,879 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,879 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,879 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,880 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,880 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,882 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,882 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,882 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,883 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,883 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,883 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,883 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,883 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~ret13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,884 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,884 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,885 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,885 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,885 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,885 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,886 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,886 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,886 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,886 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~ret13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,886 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,887 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,888 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,889 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,896 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,897 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,897 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,899 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,899 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,900 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,901 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,901 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,901 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,912 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,912 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,912 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,915 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,915 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,916 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,916 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,916 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,916 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,917 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,919 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,920 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,921 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,921 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,921 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,921 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~ret13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,922 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,922 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,922 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,922 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,923 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,923 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,926 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,927 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,927 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,927 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,927 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,928 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,928 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 09:57:05,945 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-10-24 09:57:06,027 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 09:57:06,037 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 [2021-10-24 09:57:06,037 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-10-24 09:57:06,064 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-24 09:57:06,078 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 190 places, 195 transitions, 422 flow [2021-10-24 09:57:06,082 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 190 places, 195 transitions, 422 flow [2021-10-24 09:57:06,084 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 190 places, 195 transitions, 422 flow [2021-10-24 09:57:06,206 INFO L129 PetriNetUnfolder]: 18/191 cut-off events. [2021-10-24 09:57:06,207 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-24 09:57:06,213 INFO L84 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 191 events. 18/191 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 89 event pairs, 0 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 157. Up to 2 conditions per place. [2021-10-24 09:57:06,219 INFO L116 LiptonReduction]: Number of co-enabled transitions 1376 [2021-10-24 09:57:30,113 WARN L207 SmtUtils]: Spent 6.88 s on a formula simplification. DAG size of input: 171 DAG size of output: 170 [2021-10-24 09:57:38,532 WARN L207 SmtUtils]: Spent 6.61 s on a formula simplification. DAG size of input: 177 DAG size of output: 174 [2021-10-24 09:57:40,430 INFO L131 LiptonReduction]: Checked pairs total: 3186 [2021-10-24 09:57:40,430 INFO L133 LiptonReduction]: Total number of compositions: 185 [2021-10-24 09:57:40,447 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 45 places, 38 transitions, 108 flow [2021-10-24 09:57:40,493 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 324 states, 323 states have (on average 4.027863777089784) internal successors, (1301), 323 states have internal predecessors, (1301), 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) [2021-10-24 09:57:40,498 INFO L276 IsEmpty]: Start isEmpty. Operand has 324 states, 323 states have (on average 4.027863777089784) internal successors, (1301), 323 states have internal predecessors, (1301), 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) [2021-10-24 09:57:40,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-24 09:57:40,524 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:57:40,524 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:57:40,525 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-24 09:57:40,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:57:40,533 INFO L82 PathProgramCache]: Analyzing trace with hash -310558535, now seen corresponding path program 1 times [2021-10-24 09:57:40,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:57:40,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [346532160] [2021-10-24 09:57:40,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:57:40,551 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:57:40,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:57:40,558 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:57:40,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-24 09:57:40,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:57:40,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-24 09:57:40,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:57:40,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:57:40,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:57:41,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:57:41,086 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:57:41,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [346532160] [2021-10-24 09:57:41,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [346532160] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:57:41,087 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:57:41,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-24 09:57:41,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578583850] [2021-10-24 09:57:41,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 09:57:41,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:57:41,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 09:57:41,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:57:41,131 INFO L87 Difference]: Start difference. First operand has 324 states, 323 states have (on average 4.027863777089784) internal successors, (1301), 323 states have internal predecessors, (1301), 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 3 states, 2 states have (on average 11.5) internal successors, (23), 2 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) [2021-10-24 09:57:41,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:57:41,241 INFO L93 Difference]: Finished difference Result 619 states and 2529 transitions. [2021-10-24 09:57:41,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 09:57:41,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 2 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 23 [2021-10-24 09:57:41,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:57:41,282 INFO L225 Difference]: With dead ends: 619 [2021-10-24 09:57:41,282 INFO L226 Difference]: Without dead ends: 590 [2021-10-24 09:57:41,283 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:57:41,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2021-10-24 09:57:41,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 440. [2021-10-24 09:57:41,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 439 states have (on average 4.0592255125284735) internal successors, (1782), 439 states have internal predecessors, (1782), 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) [2021-10-24 09:57:41,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 1782 transitions. [2021-10-24 09:57:41,414 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 1782 transitions. Word has length 23 [2021-10-24 09:57:41,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:57:41,415 INFO L470 AbstractCegarLoop]: Abstraction has 440 states and 1782 transitions. [2021-10-24 09:57:41,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 2 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) [2021-10-24 09:57:41,416 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 1782 transitions. [2021-10-24 09:57:41,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-24 09:57:41,427 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:57:41,428 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:57:41,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-24 09:57:41,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:57:41,647 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-24 09:57:41,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:57:41,647 INFO L82 PathProgramCache]: Analyzing trace with hash -37149897, now seen corresponding path program 1 times [2021-10-24 09:57:41,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:57:41,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [431421918] [2021-10-24 09:57:41,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:57:41,648 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:57:41,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:57:41,653 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:57:41,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-24 09:57:41,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:57:41,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-24 09:57:41,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:57:42,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:57:42,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:57:42,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:57:42,350 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:57:42,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [431421918] [2021-10-24 09:57:42,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [431421918] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:57:42,351 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:57:42,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-24 09:57:42,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706450257] [2021-10-24 09:57:42,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 09:57:42,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:57:42,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 09:57:42,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-24 09:57:42,354 INFO L87 Difference]: Start difference. First operand 440 states and 1782 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:57:42,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:57:42,675 INFO L93 Difference]: Finished difference Result 928 states and 3404 transitions. [2021-10-24 09:57:42,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 09:57:42,676 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-24 09:57:42,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:57:42,688 INFO L225 Difference]: With dead ends: 928 [2021-10-24 09:57:42,689 INFO L226 Difference]: Without dead ends: 866 [2021-10-24 09:57:42,689 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 42.2ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-24 09:57:42,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2021-10-24 09:57:42,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 614. [2021-10-24 09:57:42,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 613 states have (on average 4.0261011419249595) internal successors, (2468), 613 states have internal predecessors, (2468), 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) [2021-10-24 09:57:42,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 2468 transitions. [2021-10-24 09:57:42,731 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 2468 transitions. Word has length 25 [2021-10-24 09:57:42,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:57:42,731 INFO L470 AbstractCegarLoop]: Abstraction has 614 states and 2468 transitions. [2021-10-24 09:57:42,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:57:42,732 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 2468 transitions. [2021-10-24 09:57:42,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-24 09:57:42,736 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:57:42,736 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:57:42,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-24 09:57:42,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:57:42,951 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-24 09:57:42,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:57:42,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1006907333, now seen corresponding path program 1 times [2021-10-24 09:57:42,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:57:42,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [908225164] [2021-10-24 09:57:42,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:57:42,953 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:57:42,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:57:42,959 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:57:42,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-24 09:57:43,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:57:43,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 09:57:43,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:57:43,262 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:57:43,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:57:43,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:57:43,454 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:57:43,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [908225164] [2021-10-24 09:57:43,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [908225164] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:57:43,455 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:57:43,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-24 09:57:43,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419361879] [2021-10-24 09:57:43,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 09:57:43,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:57:43,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 09:57:43,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:57:43,457 INFO L87 Difference]: Start difference. First operand 614 states and 2468 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 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) [2021-10-24 09:57:43,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:57:43,542 INFO L93 Difference]: Finished difference Result 1146 states and 4397 transitions. [2021-10-24 09:57:43,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 09:57:43,544 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 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 25 [2021-10-24 09:57:43,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:57:43,559 INFO L225 Difference]: With dead ends: 1146 [2021-10-24 09:57:43,559 INFO L226 Difference]: Without dead ends: 1070 [2021-10-24 09:57:43,559 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:57:43,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2021-10-24 09:57:43,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 836. [2021-10-24 09:57:43,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 835 states have (on average 4.023952095808383) internal successors, (3360), 835 states have internal predecessors, (3360), 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) [2021-10-24 09:57:43,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 3360 transitions. [2021-10-24 09:57:43,635 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 3360 transitions. Word has length 25 [2021-10-24 09:57:43,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:57:43,636 INFO L470 AbstractCegarLoop]: Abstraction has 836 states and 3360 transitions. [2021-10-24 09:57:43,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 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) [2021-10-24 09:57:43,636 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 3360 transitions. [2021-10-24 09:57:43,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-24 09:57:43,641 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:57:43,641 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:57:43,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-24 09:57:43,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:57:43,856 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-24 09:57:43,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:57:43,856 INFO L82 PathProgramCache]: Analyzing trace with hash 121466413, now seen corresponding path program 1 times [2021-10-24 09:57:43,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:57:43,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2123251992] [2021-10-24 09:57:43,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:57:43,857 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:57:43,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:57:43,859 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:57:43,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-24 09:57:44,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:57:44,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-24 09:57:44,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:57:44,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-24 09:57:44,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:57:44,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-24 09:57:44,423 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:57:44,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2123251992] [2021-10-24 09:57:44,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2123251992] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:57:44,424 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:57:44,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-24 09:57:44,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848646054] [2021-10-24 09:57:44,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 09:57:44,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:57:44,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 09:57:44,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-24 09:57:44,426 INFO L87 Difference]: Start difference. First operand 836 states and 3360 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:57:44,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:57:44,607 INFO L93 Difference]: Finished difference Result 1158 states and 4371 transitions. [2021-10-24 09:57:44,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 09:57:44,609 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-24 09:57:44,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:57:44,623 INFO L225 Difference]: With dead ends: 1158 [2021-10-24 09:57:44,623 INFO L226 Difference]: Without dead ends: 1096 [2021-10-24 09:57:44,623 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 64.9ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-24 09:57:44,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2021-10-24 09:57:44,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 960. [2021-10-24 09:57:44,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 959 states have (on average 3.9697601668404587) internal successors, (3807), 959 states have internal predecessors, (3807), 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) [2021-10-24 09:57:44,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 3807 transitions. [2021-10-24 09:57:44,676 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 3807 transitions. Word has length 27 [2021-10-24 09:57:44,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:57:44,677 INFO L470 AbstractCegarLoop]: Abstraction has 960 states and 3807 transitions. [2021-10-24 09:57:44,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:57:44,677 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 3807 transitions. [2021-10-24 09:57:44,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-24 09:57:44,694 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:57:44,694 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:57:44,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-24 09:57:44,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:57:44,909 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-24 09:57:44,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:57:44,910 INFO L82 PathProgramCache]: Analyzing trace with hash -112417971, now seen corresponding path program 1 times [2021-10-24 09:57:44,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:57:44,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1068390746] [2021-10-24 09:57:44,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:57:44,911 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:57:44,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:57:44,912 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:57:44,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-24 09:57:45,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:57:45,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-24 09:57:45,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:57:45,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-24 09:57:45,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:57:45,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-24 09:57:45,413 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:57:45,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1068390746] [2021-10-24 09:57:45,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1068390746] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:57:45,413 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:57:45,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-24 09:57:45,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699298928] [2021-10-24 09:57:45,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 09:57:45,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:57:45,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 09:57:45,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-24 09:57:45,415 INFO L87 Difference]: Start difference. First operand 960 states and 3807 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 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) [2021-10-24 09:57:45,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:57:45,556 INFO L93 Difference]: Finished difference Result 1273 states and 4783 transitions. [2021-10-24 09:57:45,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 09:57:45,558 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-24 09:57:45,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:57:45,572 INFO L225 Difference]: With dead ends: 1273 [2021-10-24 09:57:45,573 INFO L226 Difference]: Without dead ends: 1210 [2021-10-24 09:57:45,573 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.5ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-24 09:57:45,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2021-10-24 09:57:45,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1010. [2021-10-24 09:57:45,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1010 states, 1009 states have (on average 3.9613478691774033) internal successors, (3997), 1009 states have internal predecessors, (3997), 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) [2021-10-24 09:57:45,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1010 states to 1010 states and 3997 transitions. [2021-10-24 09:57:45,634 INFO L78 Accepts]: Start accepts. Automaton has 1010 states and 3997 transitions. Word has length 27 [2021-10-24 09:57:45,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:57:45,635 INFO L470 AbstractCegarLoop]: Abstraction has 1010 states and 3997 transitions. [2021-10-24 09:57:45,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 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) [2021-10-24 09:57:45,635 INFO L276 IsEmpty]: Start isEmpty. Operand 1010 states and 3997 transitions. [2021-10-24 09:57:45,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-24 09:57:45,644 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:57:45,644 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:57:45,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-24 09:57:45,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:57:45,859 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-24 09:57:45,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:57:45,859 INFO L82 PathProgramCache]: Analyzing trace with hash 488407636, now seen corresponding path program 1 times [2021-10-24 09:57:45,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:57:45,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1936298708] [2021-10-24 09:57:45,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:57:45,860 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:57:45,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:57:45,861 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:57:45,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-24 09:57:46,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:57:46,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-24 09:57:46,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:57:46,329 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-24 09:57:46,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:57:46,515 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-24 09:57:46,516 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:57:46,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1936298708] [2021-10-24 09:57:46,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1936298708] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:57:46,516 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:57:46,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-24 09:57:46,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809504326] [2021-10-24 09:57:46,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-24 09:57:46,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:57:46,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-24 09:57:46,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-24 09:57:46,518 INFO L87 Difference]: Start difference. First operand 1010 states and 3997 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:57:47,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:57:47,102 INFO L93 Difference]: Finished difference Result 2232 states and 8167 transitions. [2021-10-24 09:57:47,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-24 09:57:47,103 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-24 09:57:47,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:57:47,128 INFO L225 Difference]: With dead ends: 2232 [2021-10-24 09:57:47,129 INFO L226 Difference]: Without dead ends: 2124 [2021-10-24 09:57:47,131 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 163.9ms TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-10-24 09:57:47,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2124 states. [2021-10-24 09:57:47,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2124 to 1248. [2021-10-24 09:57:47,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1248 states, 1247 states have (on average 3.9839615076182837) internal successors, (4968), 1247 states have internal predecessors, (4968), 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) [2021-10-24 09:57:47,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 4968 transitions. [2021-10-24 09:57:47,235 INFO L78 Accepts]: Start accepts. Automaton has 1248 states and 4968 transitions. Word has length 28 [2021-10-24 09:57:47,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:57:47,236 INFO L470 AbstractCegarLoop]: Abstraction has 1248 states and 4968 transitions. [2021-10-24 09:57:47,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:57:47,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states and 4968 transitions. [2021-10-24 09:57:47,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-24 09:57:47,244 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:57:47,244 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:57:47,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-24 09:57:47,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:57:47,464 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-24 09:57:47,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:57:47,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1667411400, now seen corresponding path program 2 times [2021-10-24 09:57:47,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:57:47,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1383739406] [2021-10-24 09:57:47,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-24 09:57:47,466 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:57:47,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:57:47,467 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:57:47,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-24 09:57:47,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-24 09:57:47,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-24 09:57:47,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-24 09:57:47,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:57:48,009 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-24 09:57:48,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:57:48,416 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-24 09:57:48,416 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:57:48,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1383739406] [2021-10-24 09:57:48,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1383739406] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:57:48,417 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:57:48,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 6] imperfect sequences [] total 9 [2021-10-24 09:57:48,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797257103] [2021-10-24 09:57:48,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-24 09:57:48,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:57:48,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-24 09:57:48,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-24 09:57:48,418 INFO L87 Difference]: Start difference. First operand 1248 states and 4968 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:57:49,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:57:49,537 INFO L93 Difference]: Finished difference Result 1756 states and 6182 transitions. [2021-10-24 09:57:49,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-24 09:57:49,538 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-24 09:57:49,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:57:49,557 INFO L225 Difference]: With dead ends: 1756 [2021-10-24 09:57:49,558 INFO L226 Difference]: Without dead ends: 1649 [2021-10-24 09:57:49,563 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 397.7ms TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-10-24 09:57:49,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1649 states. [2021-10-24 09:57:49,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1649 to 1041. [2021-10-24 09:57:49,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1041 states, 1040 states have (on average 3.893269230769231) internal successors, (4049), 1040 states have internal predecessors, (4049), 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) [2021-10-24 09:57:49,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 4049 transitions. [2021-10-24 09:57:49,628 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 4049 transitions. Word has length 28 [2021-10-24 09:57:49,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:57:49,630 INFO L470 AbstractCegarLoop]: Abstraction has 1041 states and 4049 transitions. [2021-10-24 09:57:49,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:57:49,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 4049 transitions. [2021-10-24 09:57:49,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-24 09:57:49,636 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:57:49,636 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:57:49,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-24 09:57:49,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:57:49,851 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-24 09:57:49,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:57:49,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1025517982, now seen corresponding path program 3 times [2021-10-24 09:57:49,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:57:49,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [821139715] [2021-10-24 09:57:49,852 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-24 09:57:49,853 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:57:49,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:57:49,855 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:57:49,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-24 09:57:50,207 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-24 09:57:50,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-24 09:57:50,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-24 09:57:50,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:57:50,482 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-24 09:57:50,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:57:50,892 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-24 09:57:50,893 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:57:50,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [821139715] [2021-10-24 09:57:50,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [821139715] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:57:50,893 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:57:50,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [] total 10 [2021-10-24 09:57:50,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539190416] [2021-10-24 09:57:50,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-24 09:57:50,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:57:50,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-24 09:57:50,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-10-24 09:57:50,895 INFO L87 Difference]: Start difference. First operand 1041 states and 4049 transitions. Second operand has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:57:51,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:57:51,940 INFO L93 Difference]: Finished difference Result 2601 states and 9451 transitions. [2021-10-24 09:57:51,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-24 09:57:51,941 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-24 09:57:51,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:57:51,971 INFO L225 Difference]: With dead ends: 2601 [2021-10-24 09:57:51,972 INFO L226 Difference]: Without dead ends: 2353 [2021-10-24 09:57:51,972 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 533.6ms TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2021-10-24 09:57:51,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2353 states. [2021-10-24 09:57:52,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2353 to 1591. [2021-10-24 09:57:52,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1591 states, 1590 states have (on average 4.022012578616352) internal successors, (6395), 1590 states have internal predecessors, (6395), 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) [2021-10-24 09:57:52,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1591 states to 1591 states and 6395 transitions. [2021-10-24 09:57:52,079 INFO L78 Accepts]: Start accepts. Automaton has 1591 states and 6395 transitions. Word has length 28 [2021-10-24 09:57:52,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:57:52,080 INFO L470 AbstractCegarLoop]: Abstraction has 1591 states and 6395 transitions. [2021-10-24 09:57:52,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:57:52,080 INFO L276 IsEmpty]: Start isEmpty. Operand 1591 states and 6395 transitions. [2021-10-24 09:57:52,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-24 09:57:52,089 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:57:52,089 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:57:52,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-24 09:57:52,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:57:52,303 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-24 09:57:52,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:57:52,304 INFO L82 PathProgramCache]: Analyzing trace with hash -840810280, now seen corresponding path program 4 times [2021-10-24 09:57:52,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:57:52,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [191832110] [2021-10-24 09:57:52,305 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-24 09:57:52,305 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:57:52,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:57:52,306 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:57:52,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-24 09:57:52,579 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-24 09:57:52,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-24 09:57:52,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-24 09:57:52,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:57:53,418 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-24 09:57:53,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:57:54,814 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-24 09:57:54,814 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:57:54,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [191832110] [2021-10-24 09:57:54,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [191832110] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 09:57:54,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1452529976] [2021-10-24 09:57:54,815 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-24 09:57:54,815 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-24 09:57:54,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/cvc4 [2021-10-24 09:57:54,817 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-24 09:57:54,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-10-24 09:57:55,239 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-24 09:57:55,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-24 09:57:55,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-24 09:57:55,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:57:55,912 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-24 09:57:55,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:57:56,851 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-24 09:57:56,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1452529976] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 09:57:56,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860838957] [2021-10-24 09:57:56,851 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-24 09:57:56,851 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:57:56,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:57:56,855 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 09:57:56,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-24 09:57:57,202 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-24 09:57:57,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-24 09:57:57,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-24 09:57:57,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:57:57,488 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-24 09:57:57,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:57:58,144 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-24 09:57:58,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860838957] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 09:57:58,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-24 09:57:58,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7, 7, 5, 5] total 29 [2021-10-24 09:57:58,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873376896] [2021-10-24 09:57:58,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-24 09:57:58,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:57:58,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-24 09:57:58,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=707, Unknown=0, NotChecked=0, Total=870 [2021-10-24 09:57:58,147 INFO L87 Difference]: Start difference. First operand 1591 states and 6395 transitions. Second operand has 30 states, 30 states have (on average 3.8333333333333335) internal successors, (115), 29 states have internal predecessors, (115), 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) [2021-10-24 09:58:43,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:58:43,421 INFO L93 Difference]: Finished difference Result 12271 states and 44764 transitions. [2021-10-24 09:58:43,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2021-10-24 09:58:43,425 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.8333333333333335) internal successors, (115), 29 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-24 09:58:43,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:58:43,552 INFO L225 Difference]: With dead ends: 12271 [2021-10-24 09:58:43,553 INFO L226 Difference]: Without dead ends: 9372 [2021-10-24 09:58:43,565 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 144 SyntacticMatches, 2 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11186 ImplicationChecksByTransitivity, 30473.6ms TimeCoverageRelationStatistics Valid=4479, Invalid=23577, Unknown=0, NotChecked=0, Total=28056 [2021-10-24 09:58:43,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9372 states. [2021-10-24 09:58:44,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9372 to 2712. [2021-10-24 09:58:44,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2712 states, 2711 states have (on average 4.250092216894135) internal successors, (11522), 2711 states have internal predecessors, (11522), 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) [2021-10-24 09:58:44,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2712 states to 2712 states and 11522 transitions. [2021-10-24 09:58:44,174 INFO L78 Accepts]: Start accepts. Automaton has 2712 states and 11522 transitions. Word has length 30 [2021-10-24 09:58:44,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:58:44,174 INFO L470 AbstractCegarLoop]: Abstraction has 2712 states and 11522 transitions. [2021-10-24 09:58:44,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.8333333333333335) internal successors, (115), 29 states have internal predecessors, (115), 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) [2021-10-24 09:58:44,181 INFO L276 IsEmpty]: Start isEmpty. Operand 2712 states and 11522 transitions. [2021-10-24 09:58:44,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-24 09:58:44,206 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:58:44,206 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:58:44,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-24 09:58:44,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-24 09:58:44,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-10-24 09:58:44,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt [2021-10-24 09:58:44,814 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-24 09:58:44,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:58:44,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1942268657, now seen corresponding path program 1 times [2021-10-24 09:58:44,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:58:44,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1403562606] [2021-10-24 09:58:44,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:58:44,817 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:58:44,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:58:44,818 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:58:44,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-24 09:58:45,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:58:45,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-24 09:58:45,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:58:45,924 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-24 09:58:45,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:58:46,369 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-24 09:58:46,369 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:58:46,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1403562606] [2021-10-24 09:58:46,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1403562606] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 09:58:46,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1804746441] [2021-10-24 09:58:46,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:58:46,370 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-24 09:58:46,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/cvc4 [2021-10-24 09:58:46,371 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-24 09:58:46,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-10-24 09:58:46,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:58:46,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-24 09:58:46,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:58:47,362 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-24 09:58:47,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:58:47,617 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-24 09:58:47,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1804746441] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 09:58:47,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950826853] [2021-10-24 09:58:47,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:58:47,618 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:58:47,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:58:47,619 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 09:58:47,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-24 09:58:48,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:58:48,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-24 09:58:48,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:58:48,529 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-24 09:58:48,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:58:48,769 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-24 09:58:48,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950826853] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 09:58:48,770 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-24 09:58:48,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 11 [2021-10-24 09:58:48,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409471528] [2021-10-24 09:58:48,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-24 09:58:48,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:58:48,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-24 09:58:48,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-10-24 09:58:48,772 INFO L87 Difference]: Start difference. First operand 2712 states and 11522 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 11 states have internal predecessors, (57), 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) [2021-10-24 09:58:49,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:58:49,374 INFO L93 Difference]: Finished difference Result 5688 states and 24424 transitions. [2021-10-24 09:58:49,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-24 09:58:49,377 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-24 09:58:49,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:58:49,413 INFO L225 Difference]: With dead ends: 5688 [2021-10-24 09:58:49,413 INFO L226 Difference]: Without dead ends: 5688 [2021-10-24 09:58:49,413 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 168 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 415.8ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-10-24 09:58:49,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5688 states. [2021-10-24 09:58:49,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5688 to 3350. [2021-10-24 09:58:49,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3350 states, 3349 states have (on average 4.2797850104508806) internal successors, (14333), 3349 states have internal predecessors, (14333), 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) [2021-10-24 09:58:49,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3350 states to 3350 states and 14333 transitions. [2021-10-24 09:58:49,684 INFO L78 Accepts]: Start accepts. Automaton has 3350 states and 14333 transitions. Word has length 31 [2021-10-24 09:58:49,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:58:49,685 INFO L470 AbstractCegarLoop]: Abstraction has 3350 states and 14333 transitions. [2021-10-24 09:58:49,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 11 states have internal predecessors, (57), 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) [2021-10-24 09:58:49,687 INFO L276 IsEmpty]: Start isEmpty. Operand 3350 states and 14333 transitions. [2021-10-24 09:58:49,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-24 09:58:49,706 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:58:49,706 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:58:49,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-24 09:58:49,932 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2021-10-24 09:58:50,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-24 09:58:50,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:58:50,327 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-24 09:58:50,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:58:50,327 INFO L82 PathProgramCache]: Analyzing trace with hash 266264431, now seen corresponding path program 1 times [2021-10-24 09:58:50,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:58:50,328 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1883278362] [2021-10-24 09:58:50,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:58:50,328 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:58:50,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:58:50,330 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:58:50,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-24 09:58:51,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:58:51,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-24 09:58:51,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:58:51,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:58:51,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:58:51,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:58:51,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:58:51,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:58:51,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:58:51,777 INFO L354 Elim1Store]: treesize reduction 419, result has 12.9 percent of original size [2021-10-24 09:58:51,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 186 treesize of output 222 [2021-10-24 09:58:53,846 INFO L354 Elim1Store]: treesize reduction 56, result has 23.3 percent of original size [2021-10-24 09:58:53,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 45 treesize of output 51 [2021-10-24 09:58:54,545 INFO L354 Elim1Store]: treesize reduction 163, result has 15.1 percent of original size [2021-10-24 09:58:54,548 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 39 treesize of output 47 [2021-10-24 10:01:55,348 WARN L207 SmtUtils]: Spent 2.84 m on a formula simplification. DAG size of input: 572 DAG size of output: 148 [2021-10-24 10:01:55,350 INFO L354 Elim1Store]: treesize reduction 3448, result has 12.2 percent of original size [2021-10-24 10:01:55,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 1 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 65 case distinctions, treesize of input 220 treesize of output 552 [2021-10-24 10:07:31,966 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-24 10:07:31,968 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:07:31,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1883278362] [2021-10-24 10:07:31,969 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-10-24 10:07:31,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1134045154] [2021-10-24 10:07:31,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:07:31,969 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-24 10:07:31,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/cvc4 [2021-10-24 10:07:31,978 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-24 10:07:31,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-10-24 10:07:31,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-10-24 10:07:33,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:07:33,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 59 conjunts are in the unsatisfiable core [2021-10-24 10:07:33,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:07:33,745 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-10-24 10:07:33,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607581832] [2021-10-24 10:07:33,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:07:33,745 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:07:33,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:07:33,754 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:07:33,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-24 10:07:34,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:07:34,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 53 conjunts are in the unsatisfiable core [2021-10-24 10:07:34,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:07:34,584 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-10-24 10:07:34,584 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:07:34,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-24 10:07:34,584 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-10-24 10:07:34,584 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-24 10:07:34,589 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:07:34,591 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-24 10:07:34,591 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-24 10:07:34,591 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-24 10:07:34,591 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATION [2021-10-24 10:07:34,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-24 10:07:34,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-24 10:07:34,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-10-24 10:07:35,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5732fa4-41c8-4e8c-b49e-6fffe7f821ee/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt [2021-10-24 10:07:35,197 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-24 10:07:35,198 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:07:35,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:07:35 BasicIcfg [2021-10-24 10:07:35,231 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:07:35,231 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:07:35,232 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:07:35,232 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:07:35,233 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:57:05" (3/4) ... [2021-10-24 10:07:35,236 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-24 10:07:35,237 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:07:35,238 INFO L168 Benchmark]: Toolchain (without parser) took 632214.48 ms. Allocated memory was 54.5 MB in the beginning and 245.4 MB in the end (delta: 190.8 MB). Free memory was 31.2 MB in the beginning and 149.0 MB in the end (delta: -117.7 MB). Peak memory consumption was 72.2 MB. Max. memory is 16.1 GB. [2021-10-24 10:07:35,239 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 54.5 MB. Free memory was 36.0 MB in the beginning and 36.0 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:07:35,240 INFO L168 Benchmark]: CACSL2BoogieTranslator took 503.27 ms. Allocated memory was 54.5 MB in the beginning and 71.3 MB in the end (delta: 16.8 MB). Free memory was 31.0 MB in the beginning and 52.8 MB in the end (delta: -21.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:07:35,240 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.86 ms. Allocated memory is still 71.3 MB. Free memory was 52.6 MB in the beginning and 50.1 MB in the end (delta: 2.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:07:35,241 INFO L168 Benchmark]: Boogie Preprocessor took 92.10 ms. Allocated memory is still 71.3 MB. Free memory was 50.1 MB in the beginning and 47.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-24 10:07:35,241 INFO L168 Benchmark]: RCFGBuilder took 2073.20 ms. Allocated memory is still 71.3 MB. Free memory was 47.9 MB in the beginning and 36.1 MB in the end (delta: 11.8 MB). Peak memory consumption was 20.6 MB. Max. memory is 16.1 GB. [2021-10-24 10:07:35,242 INFO L168 Benchmark]: TraceAbstraction took 629473.42 ms. Allocated memory was 71.3 MB in the beginning and 245.4 MB in the end (delta: 174.1 MB). Free memory was 35.8 MB in the beginning and 149.0 MB in the end (delta: -113.2 MB). Peak memory consumption was 60.3 MB. Max. memory is 16.1 GB. [2021-10-24 10:07:35,243 INFO L168 Benchmark]: Witness Printer took 5.39 ms. Allocated memory is still 245.4 MB. Free memory is still 149.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:07:35,247 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 54.5 MB. Free memory was 36.0 MB in the beginning and 36.0 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 503.27 ms. Allocated memory was 54.5 MB in the beginning and 71.3 MB in the end (delta: 16.8 MB). Free memory was 31.0 MB in the beginning and 52.8 MB in the end (delta: -21.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 59.86 ms. Allocated memory is still 71.3 MB. Free memory was 52.6 MB in the beginning and 50.1 MB in the end (delta: 2.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 92.10 ms. Allocated memory is still 71.3 MB. Free memory was 50.1 MB in the beginning and 47.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2073.20 ms. Allocated memory is still 71.3 MB. Free memory was 47.9 MB in the beginning and 36.1 MB in the end (delta: 11.8 MB). Peak memory consumption was 20.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 629473.42 ms. Allocated memory was 71.3 MB in the beginning and 245.4 MB in the end (delta: 174.1 MB). Free memory was 35.8 MB in the beginning and 149.0 MB in the end (delta: -113.2 MB). Peak memory consumption was 60.3 MB. Max. memory is 16.1 GB. * Witness Printer took 5.39 ms. Allocated memory is still 245.4 MB. Free memory is still 149.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 34348.4ms, 190 PlacesBefore, 45 PlacesAfterwards, 195 TransitionsBefore, 38 TransitionsAfterwards, 1376 CoEnabledTransitionPairs, 7 FixpointIterations, 120 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 22 TrivialYvCompositions, 8 ConcurrentYvCompositions, 12 ChoiceCompositions, 185 TotalNumberOfCompositions, 3186 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2025, positive: 1909, positive conditional: 0, positive unconditional: 1909, negative: 116, negative conditional: 0, negative unconditional: 116, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 971, positive: 946, positive conditional: 0, positive unconditional: 946, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 971, positive: 943, positive conditional: 0, positive unconditional: 943, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 28, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 1044, positive: 132, positive conditional: 0, positive unconditional: 132, negative: 912, negative conditional: 0, negative unconditional: 912, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2025, positive: 963, positive conditional: 0, positive unconditional: 963, negative: 91, negative conditional: 0, negative unconditional: 91, unknown: 971, unknown conditional: 0, unknown unconditional: 971] , Statistics on independence cache: Total cache size (in pairs): 134, Positive cache size: 123, Positive conditional cache size: 0, Positive unconditional cache size: 123, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 130]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L41] 0 int *q1, *q2; [L42] 0 int q1_front, q1_back, q2_front, q2_back, i, j, n1, n2, N, C, total; [L104] 0 pthread_t t1, t2, t3, t4; [L106] 0 C = __VERIFIER_nondet_int() [L107] 0 N = __VERIFIER_nondet_int() [L108] 0 n1 = __VERIFIER_nondet_int() [L109] 0 n2 = __VERIFIER_nondet_int() [L110] 0 q1_front = __VERIFIER_nondet_int() [L111] 0 q1_back = q1_front [L112] 0 q2_front = __VERIFIER_nondet_int() [L113] 0 q2_back = q2_front [L38] COND FALSE 0 !(!cond) [L38] COND TRUE 0 !cond [L139] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L140] 0 int i = 0; [L140] COND TRUE 0 i < size [L141] 0 arr[i] = __VERIFIER_nondet_int() [L140] 0 i++ [L143] 0 return arr; [L114] 0 q1 = create_fresh_int_array(n1) [L38] COND FALSE 0 !(!cond) [L38] COND TRUE 0 !cond [L139] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L140] 0 int i = 0; [L140] COND TRUE 0 i < size [L141] 0 arr[i] = __VERIFIER_nondet_int() [L140] 0 i++ [L140] COND FALSE 0 !(i < size) [L143] 0 return arr; [L115] 0 q2 = create_fresh_int_array(n2) [L38] COND TRUE 0 !cond [L120] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) [L48] COND TRUE 1 i < N [L38] COND FALSE 1 !(!cond) [L51] 1 q1[q1_back] [L38] COND TRUE 1 !cond [L38] COND TRUE 1 !cond [L53] 1 q1_back++ [L56] 1 i++ [L60] 1 return 0; [L121] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) [L64] COND TRUE 2 j < N [L38] COND TRUE 2 !cond [L67] 2 q2[q2_back] [L38] COND TRUE 2 !cond [L38] COND TRUE 2 !cond [L69] 2 q2_back++ [L122] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) [L72] 2 j++ [L123] FCALL, FORK 0 pthread_create(&t4, 0, thread4, 0) [L92] COND TRUE 4 j < N || q2_front < q2_back [L38] COND TRUE 4 !cond [L95] EXPR 4 q2[q2_front] [L38] COND TRUE 4 !cond [L38] COND FALSE 4 !(!cond) [L149] 4 return a + b; [L95] 4 total = plus(total, q2[q2_front]) [L96] 4 q2_front++ [L100] 4 return 0; [L124] 0 \read(t1) [L64] COND FALSE 2 !(j < N) [L76] 2 return 0; [L80] COND TRUE 3 i < N || q1_front < q1_back [L38] COND TRUE 3 !cond [L83] EXPR 3 q1[q1_front] [L38] COND TRUE 3 !cond [L38] COND TRUE 3 !cond [L149] 3 return a + b; [L83] 3 total = plus(total, q1[q1_front]) [L84] 3 q1_front++ [L88] 3 return 0; [L124] FCALL, JOIN 1 pthread_join(t1, 0) [L125] 0 \read(t2) [L125] FCALL, JOIN 2 pthread_join(t2, 0) [L126] 0 \read(t3) [L126] FCALL, JOIN 3 pthread_join(t3, 0) [L127] 0 \read(t4) [L127] FCALL, JOIN 4 pthread_join(t4, 0) [L38] COND FALSE 0 !(!cond) [L130] 0 reach_error() - UnprovableResult [Line: 122]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 121]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 123]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 120]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 204 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 629170.5ms, OverallIterations: 11, TraceHistogramMax: 2, EmptinessCheckTime: 140.6ms, AutomataDifference: 49864.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 34455.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 501 SDtfs, 5488 SDslu, 3150 SDs, 0 SdLazy, 2699 SolverSat, 1080 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 18223.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 915 GetRequests, 680 SyntacticMatches, 4 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11323 ImplicationChecksByTransitivity, 32154.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=3350occurred in iteration=10, InterpolantAutomatonStates: 225, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1500.3ms AutomataMinimizationTime, 10 MinimizatonAttempts, 12216 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 327.3ms SsaConstructionTime, 1529.9ms SatisfiabilityAnalysisTime, 10622.8ms InterpolantComputationTime, 394 NumberOfCodeBlocks, 392 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 760 ConstructedInterpolants, 8 QuantifiedInterpolants, 4052 SizeOfPredicates, 74 NumberOfNonLiveVariables, 2117 ConjunctsInSsa, 111 ConjunctsInUnsatCore, 28 InterpolantComputations, 16 PerfectInterpolantSequences, 63/96 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...