./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF --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 c6847e0a77224cc67de11826c53270ee36a6eb5754e5add0bb0a49165dff2879 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:39:23,017 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:39:23,020 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:39:23,050 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:39:23,051 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:39:23,052 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:39:23,054 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:39:23,056 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:39:23,058 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:39:23,059 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:39:23,061 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:39:23,062 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:39:23,063 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:39:23,064 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:39:23,066 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:39:23,068 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:39:23,069 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:39:23,070 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:39:23,072 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:39:23,074 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:39:23,076 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:39:23,078 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:39:23,079 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:39:23,080 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:39:23,084 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:39:23,085 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:39:23,085 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:39:23,086 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:39:23,087 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:39:23,088 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:39:23,089 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:39:23,090 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:39:23,091 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:39:23,092 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:39:23,093 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:39:23,093 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:39:23,094 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:39:23,095 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:39:23,095 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:39:23,097 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:39:23,098 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:39:23,099 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 22:39:23,124 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:39:23,124 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:39:23,125 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:39:23,125 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:39:23,126 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:39:23,126 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:39:23,126 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:39:23,126 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:39:23,127 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:39:23,127 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:39:23,127 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:39:23,128 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:39:23,128 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:39:23,128 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:39:23,129 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:39:23,129 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:39:23,130 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:39:23,130 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:39:23,130 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:39:23,131 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:39:23,131 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:39:23,131 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:39:23,131 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:39:23,132 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:39:23,132 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:39:23,132 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:39:23,133 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:39:23,133 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:39:23,133 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:39:23,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:39:23,134 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:39:23,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:39:23,134 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:39:23,135 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:39:23,135 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:39:23,135 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:39:23,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:39:23,136 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:39:23,136 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:39:23,136 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:39:23,137 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c6847e0a77224cc67de11826c53270ee36a6eb5754e5add0bb0a49165dff2879 [2021-11-12 22:39:23,418 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:39:23,437 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:39:23,439 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:39:23,441 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:39:23,446 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:39:23,448 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2021-11-12 22:39:23,516 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/data/f1b50810c/85837d7e08b54fb88b1a2f3743692b9a/FLAG427ee0434 [2021-11-12 22:39:23,934 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:39:23,935 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2021-11-12 22:39:23,941 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/data/f1b50810c/85837d7e08b54fb88b1a2f3743692b9a/FLAG427ee0434 [2021-11-12 22:39:24,326 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/data/f1b50810c/85837d7e08b54fb88b1a2f3743692b9a [2021-11-12 22:39:24,328 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:39:24,330 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:39:24,331 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:39:24,332 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:39:24,335 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:39:24,336 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:39:24" (1/1) ... [2021-11-12 22:39:24,337 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47b35ff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:24, skipping insertion in model container [2021-11-12 22:39:24,337 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:39:24" (1/1) ... [2021-11-12 22:39:24,344 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:39:24,369 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:39:24,588 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_5c8904b6-8b66-49a9-b617-efd85e498997/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c[3615,3628] [2021-11-12 22:39:24,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:39:24,606 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-12 22:39:24,607 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4eec4daf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:24, skipping insertion in model container [2021-11-12 22:39:24,607 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:39:24,608 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 22:39:24,610 INFO L158 Benchmark]: Toolchain (without parser) took 279.02ms. Allocated memory was 86.0MB in the beginning and 117.4MB in the end (delta: 31.5MB). Free memory was 48.2MB in the beginning and 92.8MB in the end (delta: -44.6MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. [2021-11-12 22:39:24,611 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 86.0MB. Free memory is still 64.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:39:24,612 INFO L158 Benchmark]: CACSL2BoogieTranslator took 276.36ms. Allocated memory was 86.0MB in the beginning and 117.4MB in the end (delta: 31.5MB). Free memory was 48.0MB in the beginning and 92.8MB in the end (delta: -44.8MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. [2021-11-12 22:39:24,615 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 86.0MB. Free memory is still 64.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 276.36ms. Allocated memory was 86.0MB in the beginning and 117.4MB in the end (delta: 31.5MB). Free memory was 48.0MB in the beginning and 92.8MB in the end (delta: -44.8MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 144]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF --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 c6847e0a77224cc67de11826c53270ee36a6eb5754e5add0bb0a49165dff2879 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:39:26,817 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:39:26,821 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:39:26,881 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:39:26,881 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:39:26,887 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:39:26,889 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:39:26,894 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:39:26,898 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:39:26,909 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:39:26,910 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:39:26,912 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:39:26,913 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:39:26,916 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:39:26,919 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:39:26,924 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:39:26,925 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:39:26,928 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:39:26,930 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:39:26,935 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:39:26,940 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:39:26,941 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:39:26,944 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:39:26,947 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:39:26,954 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:39:26,955 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:39:26,955 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:39:26,957 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:39:26,958 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:39:26,959 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:39:26,959 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:39:26,960 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:39:26,962 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:39:26,963 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:39:26,965 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:39:26,966 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:39:26,967 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:39:26,967 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:39:26,967 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:39:26,969 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:39:26,970 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:39:26,971 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-12 22:39:27,019 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:39:27,019 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:39:27,021 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:39:27,021 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:39:27,022 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:39:27,022 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:39:27,022 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:39:27,022 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:39:27,023 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:39:27,023 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:39:27,025 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:39:27,025 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:39:27,026 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:39:27,026 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:39:27,026 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:39:27,026 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:39:27,027 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:39:27,027 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:39:27,027 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 22:39:27,027 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 22:39:27,027 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:39:27,028 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:39:27,028 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:39:27,028 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:39:27,028 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:39:27,029 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 22:39:27,029 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:39:27,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:39:27,029 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:39:27,030 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:39:27,030 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:39:27,030 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 22:39:27,030 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 22:39:27,030 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:39:27,031 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:39:27,031 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:39:27,031 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_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c6847e0a77224cc67de11826c53270ee36a6eb5754e5add0bb0a49165dff2879 [2021-11-12 22:39:27,410 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:39:27,445 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:39:27,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:39:27,450 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:39:27,457 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:39:27,459 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2021-11-12 22:39:27,522 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/data/1487333be/1fccb87c8ad54114a3cfd677b12f4823/FLAG9bb8222f6 [2021-11-12 22:39:27,991 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:39:27,991 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2021-11-12 22:39:28,006 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/data/1487333be/1fccb87c8ad54114a3cfd677b12f4823/FLAG9bb8222f6 [2021-11-12 22:39:28,355 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/data/1487333be/1fccb87c8ad54114a3cfd677b12f4823 [2021-11-12 22:39:28,358 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:39:28,360 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:39:28,361 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:39:28,361 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:39:28,365 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:39:28,366 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:39:28" (1/1) ... [2021-11-12 22:39:28,367 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4985e7f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:28, skipping insertion in model container [2021-11-12 22:39:28,368 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:39:28" (1/1) ... [2021-11-12 22:39:28,375 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:39:28,412 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:39:28,644 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_5c8904b6-8b66-49a9-b617-efd85e498997/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c[3615,3628] [2021-11-12 22:39:28,676 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:39:28,691 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 22:39:28,705 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:39:28,753 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_5c8904b6-8b66-49a9-b617-efd85e498997/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c[3615,3628] [2021-11-12 22:39:28,760 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:39:28,766 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:39:28,792 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_5c8904b6-8b66-49a9-b617-efd85e498997/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c[3615,3628] [2021-11-12 22:39:28,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:39:28,814 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:39:28,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:28 WrapperNode [2021-11-12 22:39:28,815 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:39:28,816 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:39:28,816 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:39:28,816 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:39:28,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:28" (1/1) ... [2021-11-12 22:39:28,847 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:28" (1/1) ... [2021-11-12 22:39:28,879 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:39:28,879 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:39:28,880 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:39:28,880 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:39:28,888 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:28" (1/1) ... [2021-11-12 22:39:28,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:28" (1/1) ... [2021-11-12 22:39:28,894 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:28" (1/1) ... [2021-11-12 22:39:28,894 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:28" (1/1) ... [2021-11-12 22:39:28,905 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:28" (1/1) ... [2021-11-12 22:39:28,927 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:28" (1/1) ... [2021-11-12 22:39:28,929 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:28" (1/1) ... [2021-11-12 22:39:28,934 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:39:28,935 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:39:28,935 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:39:28,935 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:39:28,936 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:28" (1/1) ... [2021-11-12 22:39:28,943 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:39:28,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:39:28,980 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:39:28,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:39:29,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 22:39:29,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:39:29,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 22:39:29,032 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-12 22:39:29,032 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-12 22:39:29,032 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-12 22:39:29,032 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-12 22:39:29,033 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-12 22:39:29,033 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-12 22:39:29,033 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-12 22:39:29,033 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-12 22:39:29,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 22:39:29,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:39:29,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:39:29,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 22:39:29,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 22:39:29,036 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-12 22:39:29,889 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:39:29,889 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-12 22:39:29,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:39:29 BoogieIcfgContainer [2021-11-12 22:39:29,892 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:39:29,895 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:39:29,895 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:39:29,898 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:39:29,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:39:28" (1/3) ... [2021-11-12 22:39:29,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@774075eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:39:29, skipping insertion in model container [2021-11-12 22:39:29,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:28" (2/3) ... [2021-11-12 22:39:29,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@774075eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:39:29, skipping insertion in model container [2021-11-12 22:39:29,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:39:29" (3/3) ... [2021-11-12 22:39:29,903 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-3-nl.wvr.c [2021-11-12 22:39:29,909 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-12 22:39:29,909 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:39:29,909 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 22:39:29,910 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-12 22:39:29,960 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,960 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,960 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,960 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,961 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,961 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,961 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,961 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,961 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,961 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,962 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,962 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,962 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,962 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,962 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,963 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,963 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,963 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,963 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,963 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,963 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,964 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,964 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,964 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,964 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,964 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,965 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,965 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,965 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,965 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,965 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,965 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,966 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,966 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,966 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,966 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,967 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,967 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,967 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,967 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,967 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,968 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,968 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,968 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,968 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,968 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,968 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,969 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,969 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,969 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,969 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,971 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,971 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,971 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,971 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,972 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,973 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,973 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,973 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,973 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,973 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,974 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,974 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,975 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,975 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,975 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,976 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,976 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,976 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,977 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,977 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,977 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,977 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,978 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,978 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,979 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,979 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,983 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,984 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,984 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,984 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,984 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,985 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,986 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,986 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,986 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,992 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,992 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,992 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,992 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,995 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,996 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,996 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,996 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,996 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,996 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,996 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,997 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,997 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,998 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,998 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,998 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,998 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,998 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,998 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,999 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,999 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:29,999 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:30,000 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:30,000 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:30,000 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:30,000 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:30,000 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:30,000 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:30,001 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:30,001 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:39:30,008 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-11-12 22:39:30,061 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:39:30,068 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 22:39:30,068 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-12 22:39:30,085 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-12 22:39:30,100 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 208 places, 216 transitions, 456 flow [2021-11-12 22:39:30,102 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 208 places, 216 transitions, 456 flow [2021-11-12 22:39:30,104 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 208 places, 216 transitions, 456 flow [2021-11-12 22:39:30,224 INFO L129 PetriNetUnfolder]: 18/213 cut-off events. [2021-11-12 22:39:30,224 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-11-12 22:39:30,228 INFO L84 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 213 events. 18/213 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 119 event pairs, 0 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 173. Up to 3 conditions per place. [2021-11-12 22:39:30,231 INFO L116 LiptonReduction]: Number of co-enabled transitions 1880 [2021-11-12 22:39:53,409 INFO L131 LiptonReduction]: Checked pairs total: 2739 [2021-11-12 22:39:53,410 INFO L133 LiptonReduction]: Total number of compositions: 220 [2021-11-12 22:39:53,417 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 32 transitions, 88 flow [2021-11-12 22:39:53,443 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 138 states, 137 states have (on average 3.343065693430657) internal successors, (458), 137 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:53,462 INFO L276 IsEmpty]: Start isEmpty. Operand has 138 states, 137 states have (on average 3.343065693430657) internal successors, (458), 137 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:53,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-12 22:39:53,476 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:39:53,476 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:39:53,477 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-12 22:39:53,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:39:53,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1966862538, now seen corresponding path program 1 times [2021-11-12 22:39:53,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:39:53,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1909393330] [2021-11-12 22:39:53,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:39:53,502 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:39:53,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:39:53,505 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:39:53,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 22:39:53,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:39:53,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 22:39:53,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:39:53,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:53,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:39:53,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:53,879 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:39:53,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1909393330] [2021-11-12 22:39:53,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1909393330] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:39:53,880 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:39:53,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 22:39:53,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275109919] [2021-11-12 22:39:53,883 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:39:53,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 22:39:53,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:39:53,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 22:39:53,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:39:53,910 INFO L87 Difference]: Start difference. First operand has 138 states, 137 states have (on average 3.343065693430657) internal successors, (458), 137 states have internal predecessors, (458), 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 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:54,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:39:54,062 INFO L93 Difference]: Finished difference Result 138 states and 428 transitions. [2021-11-12 22:39:54,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 22:39:54,065 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 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 21 [2021-11-12 22:39:54,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:39:54,077 INFO L225 Difference]: With dead ends: 138 [2021-11-12 22:39:54,085 INFO L226 Difference]: Without dead ends: 138 [2021-11-12 22:39:54,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:39:54,091 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 111.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.48ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 130.40ms IncrementalHoareTripleChecker+Time [2021-11-12 22:39:54,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 26 Unknown, 0 Unchecked, 0.48ms Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 130.40ms Time] [2021-11-12 22:39:54,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-11-12 22:39:54,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2021-11-12 22:39:54,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 3.124087591240876) internal successors, (428), 137 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:54,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 428 transitions. [2021-11-12 22:39:54,181 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 428 transitions. Word has length 21 [2021-11-12 22:39:54,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:39:54,182 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 428 transitions. [2021-11-12 22:39:54,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:54,183 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 428 transitions. [2021-11-12 22:39:54,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-12 22:39:54,188 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:39:54,188 INFO L514 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] [2021-11-12 22:39:54,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:39:54,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:39:54,398 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-12 22:39:54,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:39:54,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1088394533, now seen corresponding path program 1 times [2021-11-12 22:39:54,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:39:54,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1615577400] [2021-11-12 22:39:54,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:39:54,400 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:39:54,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:39:54,401 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:39:54,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 22:39:54,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:39:54,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 22:39:54,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:39:54,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:54,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:39:54,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:54,822 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:39:54,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1615577400] [2021-11-12 22:39:54,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1615577400] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:39:54,823 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:39:54,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-12 22:39:54,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033754081] [2021-11-12 22:39:54,823 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:39:54,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:39:54,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:39:54,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:39:54,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:39:54,826 INFO L87 Difference]: Start difference. First operand 138 states and 428 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:55,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:39:55,087 INFO L93 Difference]: Finished difference Result 177 states and 515 transitions. [2021-11-12 22:39:55,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:39:55,087 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-12 22:39:55,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:39:55,090 INFO L225 Difference]: With dead ends: 177 [2021-11-12 22:39:55,090 INFO L226 Difference]: Without dead ends: 139 [2021-11-12 22:39:55,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:39:55,092 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 33 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 209.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.72ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 243.13ms IncrementalHoareTripleChecker+Time [2021-11-12 22:39:55,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 3 Invalid, 80 Unknown, 0 Unchecked, 1.72ms Time], IncrementalHoareTripleChecker [3 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 243.13ms Time] [2021-11-12 22:39:55,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-11-12 22:39:55,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2021-11-12 22:39:55,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 3.108695652173913) internal successors, (429), 138 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:55,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 429 transitions. [2021-11-12 22:39:55,110 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 429 transitions. Word has length 22 [2021-11-12 22:39:55,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:39:55,111 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 429 transitions. [2021-11-12 22:39:55,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:55,111 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 429 transitions. [2021-11-12 22:39:55,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-12 22:39:55,118 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:39:55,118 INFO L514 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] [2021-11-12 22:39:55,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 22:39:55,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:39:55,331 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-12 22:39:55,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:39:55,332 INFO L85 PathProgramCache]: Analyzing trace with hash 52667622, now seen corresponding path program 1 times [2021-11-12 22:39:55,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:39:55,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [375265633] [2021-11-12 22:39:55,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:39:55,336 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:39:55,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:39:55,337 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:39:55,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 22:39:55,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:39:55,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 22:39:55,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:39:55,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 22:39:55,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:39:55,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 22:39:55,798 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:39:55,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [375265633] [2021-11-12 22:39:55,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [375265633] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:39:55,798 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:39:55,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 22:39:55,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012326969] [2021-11-12 22:39:55,799 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:39:55,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:39:55,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:39:55,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:39:55,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:39:55,800 INFO L87 Difference]: Start difference. First operand 139 states and 429 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) [2021-11-12 22:39:56,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:39:56,200 INFO L93 Difference]: Finished difference Result 213 states and 614 transitions. [2021-11-12 22:39:56,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:39:56,201 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 23 [2021-11-12 22:39:56,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:39:56,203 INFO L225 Difference]: With dead ends: 213 [2021-11-12 22:39:56,203 INFO L226 Difference]: Without dead ends: 140 [2021-11-12 22:39:56,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:39:56,205 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 21 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 325.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.17ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 368.62ms IncrementalHoareTripleChecker+Time [2021-11-12 22:39:56,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 5 Invalid, 131 Unknown, 0 Unchecked, 2.17ms Time], IncrementalHoareTripleChecker [3 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 368.62ms Time] [2021-11-12 22:39:56,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-11-12 22:39:56,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2021-11-12 22:39:56,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 3.093525179856115) internal successors, (430), 139 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:56,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 430 transitions. [2021-11-12 22:39:56,228 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 430 transitions. Word has length 23 [2021-11-12 22:39:56,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:39:56,229 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 430 transitions. [2021-11-12 22:39:56,229 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) [2021-11-12 22:39:56,229 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 430 transitions. [2021-11-12 22:39:56,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-12 22:39:56,232 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:39:56,232 INFO L514 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] [2021-11-12 22:39:56,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 22:39:56,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:39:56,444 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-12 22:39:56,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:39:56,445 INFO L85 PathProgramCache]: Analyzing trace with hash 258896864, now seen corresponding path program 1 times [2021-11-12 22:39:56,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:39:56,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1284539338] [2021-11-12 22:39:56,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:39:56,446 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:39:56,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:39:56,447 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:39:56,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 22:39:56,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:39:56,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-12 22:39:56,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:39:57,774 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-11-12 22:39:57,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2021-11-12 22:39:57,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:39:57,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:39:58,676 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-11-12 22:39:58,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 101 treesize of output 79 [2021-11-12 22:40:13,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:40:13,844 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:40:13,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1284539338] [2021-11-12 22:40:13,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1284539338] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:40:13,844 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:40:13,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-11-12 22:40:13,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071839567] [2021-11-12 22:40:13,845 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:40:13,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-12 22:40:13,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:40:13,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-12 22:40:13,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-12 22:40:13,846 INFO L87 Difference]: Start difference. First operand 140 states and 430 transitions. Second operand has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:40:15,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:40:15,173 INFO L93 Difference]: Finished difference Result 229 states and 666 transitions. [2021-11-12 22:40:15,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-12 22:40:15,174 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 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 24 [2021-11-12 22:40:15,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:40:15,176 INFO L225 Difference]: With dead ends: 229 [2021-11-12 22:40:15,176 INFO L226 Difference]: Without dead ends: 225 [2021-11-12 22:40:15,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-12 22:40:15,178 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 50 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1151.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.74ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 170 IncrementalHoareTripleChecker+Unchecked, 1304.61ms IncrementalHoareTripleChecker+Time [2021-11-12 22:40:15,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 10 Invalid, 582 Unknown, 0 Unchecked, 4.74ms Time], IncrementalHoareTripleChecker [6 Valid, 406 Invalid, 0 Unknown, 170 Unchecked, 1304.61ms Time] [2021-11-12 22:40:15,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-11-12 22:40:15,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 219. [2021-11-12 22:40:15,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 3.0045871559633026) internal successors, (655), 218 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:40:15,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 655 transitions. [2021-11-12 22:40:15,195 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 655 transitions. Word has length 24 [2021-11-12 22:40:15,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:40:15,195 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 655 transitions. [2021-11-12 22:40:15,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:40:15,196 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 655 transitions. [2021-11-12 22:40:15,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-12 22:40:15,197 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:40:15,197 INFO L514 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] [2021-11-12 22:40:15,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 22:40:15,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:40:15,413 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-12 22:40:15,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:40:15,414 INFO L85 PathProgramCache]: Analyzing trace with hash 262183484, now seen corresponding path program 2 times [2021-11-12 22:40:15,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:40:15,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [391730917] [2021-11-12 22:40:15,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 22:40:15,415 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:40:15,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:40:15,415 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:40:15,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 22:40:15,525 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-12 22:40:15,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:40:15,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-12 22:40:15,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:40:16,259 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-11-12 22:40:16,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2021-11-12 22:40:16,359 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:40:16,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:40:16,930 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-11-12 22:40:16,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 101 treesize of output 79 [2021-11-12 22:40:31,612 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:40:31,612 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:40:31,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [391730917] [2021-11-12 22:40:31,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [391730917] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:40:31,612 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:40:31,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-11-12 22:40:31,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98723225] [2021-11-12 22:40:31,613 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:40:31,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-12 22:40:31,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:40:31,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-12 22:40:31,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-12 22:40:31,614 INFO L87 Difference]: Start difference. First operand 219 states and 655 transitions. Second operand has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:40:32,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:40:32,706 INFO L93 Difference]: Finished difference Result 255 states and 725 transitions. [2021-11-12 22:40:32,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-12 22:40:32,707 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 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 24 [2021-11-12 22:40:32,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:40:32,710 INFO L225 Difference]: With dead ends: 255 [2021-11-12 22:40:32,710 INFO L226 Difference]: Without dead ends: 250 [2021-11-12 22:40:32,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-12 22:40:32,711 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 46 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 935.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.30ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 160 IncrementalHoareTripleChecker+Unchecked, 1074.48ms IncrementalHoareTripleChecker+Time [2021-11-12 22:40:32,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 8 Invalid, 476 Unknown, 0 Unchecked, 3.30ms Time], IncrementalHoareTripleChecker [0 Valid, 316 Invalid, 0 Unknown, 160 Unchecked, 1074.48ms Time] [2021-11-12 22:40:32,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-11-12 22:40:32,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 233. [2021-11-12 22:40:32,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 232 states have (on average 2.9698275862068964) internal successors, (689), 232 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:40:32,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 689 transitions. [2021-11-12 22:40:32,725 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 689 transitions. Word has length 24 [2021-11-12 22:40:32,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:40:32,726 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 689 transitions. [2021-11-12 22:40:32,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:40:32,726 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 689 transitions. [2021-11-12 22:40:32,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-12 22:40:32,727 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:40:32,728 INFO L514 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] [2021-11-12 22:40:32,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 22:40:32,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:40:32,942 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-12 22:40:32,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:40:32,942 INFO L85 PathProgramCache]: Analyzing trace with hash 443610674, now seen corresponding path program 3 times [2021-11-12 22:40:32,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:40:32,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [66787016] [2021-11-12 22:40:32,943 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 22:40:32,943 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:40:32,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:40:32,953 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:40:32,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 22:40:33,050 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-12 22:40:33,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:40:33,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-12 22:40:33,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:40:33,699 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-11-12 22:40:33,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2021-11-12 22:40:33,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:40:33,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:40:34,289 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-11-12 22:40:34,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 101 treesize of output 79 [2021-11-12 22:40:48,271 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:40:48,272 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:40:48,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [66787016] [2021-11-12 22:40:48,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [66787016] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:40:48,272 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:40:48,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-11-12 22:40:48,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230251071] [2021-11-12 22:40:48,273 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:40:48,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-12 22:40:48,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:40:48,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-12 22:40:48,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-12 22:40:48,274 INFO L87 Difference]: Start difference. First operand 233 states and 689 transitions. Second operand has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:40:49,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:40:49,193 INFO L93 Difference]: Finished difference Result 322 states and 918 transitions. [2021-11-12 22:40:49,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-12 22:40:49,193 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 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 24 [2021-11-12 22:40:49,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:40:49,196 INFO L225 Difference]: With dead ends: 322 [2021-11-12 22:40:49,196 INFO L226 Difference]: Without dead ends: 312 [2021-11-12 22:40:49,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-12 22:40:49,197 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 35 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 792.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.79ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 193 IncrementalHoareTripleChecker+Unchecked, 903.64ms IncrementalHoareTripleChecker+Time [2021-11-12 22:40:49,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 10 Invalid, 483 Unknown, 0 Unchecked, 2.79ms Time], IncrementalHoareTripleChecker [0 Valid, 290 Invalid, 0 Unknown, 193 Unchecked, 903.64ms Time] [2021-11-12 22:40:49,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-11-12 22:40:49,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 272. [2021-11-12 22:40:49,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 271 states have (on average 2.985239852398524) internal successors, (809), 271 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:40:49,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 809 transitions. [2021-11-12 22:40:49,211 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 809 transitions. Word has length 24 [2021-11-12 22:40:49,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:40:49,211 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 809 transitions. [2021-11-12 22:40:49,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:40:49,212 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 809 transitions. [2021-11-12 22:40:49,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-12 22:40:49,213 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:40:49,213 INFO L514 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] [2021-11-12 22:40:49,228 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-12 22:40:49,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:40:49,425 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-12 22:40:49,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:40:49,426 INFO L85 PathProgramCache]: Analyzing trace with hash -720620432, now seen corresponding path program 4 times [2021-11-12 22:40:49,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:40:49,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1986727493] [2021-11-12 22:40:49,426 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-12 22:40:49,427 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:40:49,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:40:49,428 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:40:49,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 22:40:49,664 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-12 22:40:49,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:40:49,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-12 22:40:49,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:40:50,292 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-11-12 22:40:50,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2021-11-12 22:40:50,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:40:50,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:40:50,910 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-11-12 22:40:50,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 101 treesize of output 79 [2021-11-12 22:41:02,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:41:02,019 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:41:02,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1986727493] [2021-11-12 22:41:02,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1986727493] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:41:02,019 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:41:02,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-11-12 22:41:02,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201274147] [2021-11-12 22:41:02,020 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:41:02,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-12 22:41:02,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:41:02,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-12 22:41:02,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-12 22:41:02,021 INFO L87 Difference]: Start difference. First operand 272 states and 809 transitions. Second operand has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:41:03,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:41:03,012 INFO L93 Difference]: Finished difference Result 280 states and 816 transitions. [2021-11-12 22:41:03,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-12 22:41:03,013 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 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 24 [2021-11-12 22:41:03,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:41:03,016 INFO L225 Difference]: With dead ends: 280 [2021-11-12 22:41:03,016 INFO L226 Difference]: Without dead ends: 247 [2021-11-12 22:41:03,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-12 22:41:03,017 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 69 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 861.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.68ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 167 IncrementalHoareTripleChecker+Unchecked, 975.39ms IncrementalHoareTripleChecker+Time [2021-11-12 22:41:03,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 8 Invalid, 483 Unknown, 0 Unchecked, 3.68ms Time], IncrementalHoareTripleChecker [0 Valid, 316 Invalid, 0 Unknown, 167 Unchecked, 975.39ms Time] [2021-11-12 22:41:03,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-11-12 22:41:03,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 208. [2021-11-12 22:41:03,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 3.0483091787439616) internal successors, (631), 207 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:41:03,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 631 transitions. [2021-11-12 22:41:03,028 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 631 transitions. Word has length 24 [2021-11-12 22:41:03,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:41:03,028 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 631 transitions. [2021-11-12 22:41:03,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:41:03,029 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 631 transitions. [2021-11-12 22:41:03,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-12 22:41:03,030 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:41:03,030 INFO L514 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] [2021-11-12 22:41:03,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 22:41:03,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:41:03,238 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-12 22:41:03,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:41:03,238 INFO L85 PathProgramCache]: Analyzing trace with hash 968017986, now seen corresponding path program 5 times [2021-11-12 22:41:03,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:41:03,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2050575332] [2021-11-12 22:41:03,239 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-12 22:41:03,239 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:41:03,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:41:03,239 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:41:03,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 22:41:03,373 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 22:41:03,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:41:03,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-12 22:41:03,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:41:03,964 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-11-12 22:41:03,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2021-11-12 22:41:04,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:41:04,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:41:04,380 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-11-12 22:41:04,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 103 treesize of output 81 [2021-11-12 22:41:25,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:41:25,098 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:41:25,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2050575332] [2021-11-12 22:41:25,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2050575332] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:41:25,098 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:41:25,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-11-12 22:41:25,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676177982] [2021-11-12 22:41:25,098 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:41:25,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-12 22:41:25,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:41:25,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-12 22:41:25,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-12 22:41:25,099 INFO L87 Difference]: Start difference. First operand 208 states and 631 transitions. Second operand has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:41:26,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:41:26,079 INFO L93 Difference]: Finished difference Result 233 states and 673 transitions. [2021-11-12 22:41:26,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-12 22:41:26,081 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 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 24 [2021-11-12 22:41:26,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:41:26,083 INFO L225 Difference]: With dead ends: 233 [2021-11-12 22:41:26,083 INFO L226 Difference]: Without dead ends: 230 [2021-11-12 22:41:26,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-12 22:41:26,084 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 56 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 849.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.39ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 294 IncrementalHoareTripleChecker+Unchecked, 962.13ms IncrementalHoareTripleChecker+Time [2021-11-12 22:41:26,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 9 Invalid, 510 Unknown, 0 Unchecked, 3.39ms Time], IncrementalHoareTripleChecker [0 Valid, 216 Invalid, 0 Unknown, 294 Unchecked, 962.13ms Time] [2021-11-12 22:41:26,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-11-12 22:41:26,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 225. [2021-11-12 22:41:26,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 2.96875) internal successors, (665), 224 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:41:26,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 665 transitions. [2021-11-12 22:41:26,096 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 665 transitions. Word has length 24 [2021-11-12 22:41:26,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:41:26,096 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 665 transitions. [2021-11-12 22:41:26,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:41:26,097 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 665 transitions. [2021-11-12 22:41:26,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-12 22:41:26,098 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:41:26,098 INFO L514 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] [2021-11-12 22:41:26,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-12 22:41:26,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:41:26,318 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-12 22:41:26,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:41:26,318 INFO L85 PathProgramCache]: Analyzing trace with hash 971304606, now seen corresponding path program 6 times [2021-11-12 22:41:26,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:41:26,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1784471081] [2021-11-12 22:41:26,319 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-12 22:41:26,319 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:41:26,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:41:26,320 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:41:26,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 22:41:26,416 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-11-12 22:41:26,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:41:26,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-12 22:41:26,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:41:27,019 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-11-12 22:41:27,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2021-11-12 22:41:27,103 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:41:27,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:41:27,499 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-11-12 22:41:27,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 103 treesize of output 81 [2021-11-12 22:41:46,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:41:46,618 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:41:46,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1784471081] [2021-11-12 22:41:46,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1784471081] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:41:46,619 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:41:46,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-11-12 22:41:46,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784487752] [2021-11-12 22:41:46,619 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:41:46,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-12 22:41:46,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:41:46,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-12 22:41:46,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-12 22:41:46,621 INFO L87 Difference]: Start difference. First operand 225 states and 665 transitions. Second operand has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:41:47,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:41:47,460 INFO L93 Difference]: Finished difference Result 248 states and 703 transitions. [2021-11-12 22:41:47,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-12 22:41:47,461 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 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 24 [2021-11-12 22:41:47,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:41:47,464 INFO L225 Difference]: With dead ends: 248 [2021-11-12 22:41:47,464 INFO L226 Difference]: Without dead ends: 244 [2021-11-12 22:41:47,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-12 22:41:47,465 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 56 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 730.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.23ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 170 IncrementalHoareTripleChecker+Unchecked, 825.64ms IncrementalHoareTripleChecker+Time [2021-11-12 22:41:47,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 8 Invalid, 333 Unknown, 0 Unchecked, 2.23ms Time], IncrementalHoareTripleChecker [0 Valid, 163 Invalid, 0 Unknown, 170 Unchecked, 825.64ms Time] [2021-11-12 22:41:47,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-11-12 22:41:47,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 233. [2021-11-12 22:41:47,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 232 states have (on average 2.9439655172413794) internal successors, (683), 232 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:41:47,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 683 transitions. [2021-11-12 22:41:47,478 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 683 transitions. Word has length 24 [2021-11-12 22:41:47,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:41:47,478 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 683 transitions. [2021-11-12 22:41:47,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:41:47,479 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 683 transitions. [2021-11-12 22:41:47,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-12 22:41:47,480 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:41:47,480 INFO L514 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] [2021-11-12 22:41:47,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 22:41:47,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:41:47,706 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-12 22:41:47,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:41:47,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1152731796, now seen corresponding path program 7 times [2021-11-12 22:41:47,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:41:47,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1212192235] [2021-11-12 22:41:47,707 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-12 22:41:47,708 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:41:47,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:41:47,709 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:41:47,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 22:41:47,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:41:47,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-12 22:41:47,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:41:48,538 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-11-12 22:41:48,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2021-11-12 22:41:48,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:41:48,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:41:49,002 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-11-12 22:41:49,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 103 treesize of output 81 [2021-11-12 22:42:09,156 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:42:09,156 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:42:09,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1212192235] [2021-11-12 22:42:09,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1212192235] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:42:09,157 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:42:09,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-11-12 22:42:09,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765630701] [2021-11-12 22:42:09,157 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:42:09,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-12 22:42:09,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:42:09,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-12 22:42:09,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-12 22:42:09,158 INFO L87 Difference]: Start difference. First operand 233 states and 683 transitions. Second operand has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:09,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:42:09,985 INFO L93 Difference]: Finished difference Result 258 states and 716 transitions. [2021-11-12 22:42:09,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-12 22:42:09,986 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 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 24 [2021-11-12 22:42:09,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:42:09,988 INFO L225 Difference]: With dead ends: 258 [2021-11-12 22:42:09,988 INFO L226 Difference]: Without dead ends: 248 [2021-11-12 22:42:09,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-12 22:42:09,989 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 35 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 712.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.79ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 132 IncrementalHoareTripleChecker+Unchecked, 815.07ms IncrementalHoareTripleChecker+Time [2021-11-12 22:42:09,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 8 Invalid, 373 Unknown, 0 Unchecked, 1.79ms Time], IncrementalHoareTripleChecker [0 Valid, 241 Invalid, 0 Unknown, 132 Unchecked, 815.07ms Time] [2021-11-12 22:42:09,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-11-12 22:42:10,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 236. [2021-11-12 22:42:10,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 235 states have (on average 2.927659574468085) internal successors, (688), 235 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:10,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 688 transitions. [2021-11-12 22:42:10,010 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 688 transitions. Word has length 24 [2021-11-12 22:42:10,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:42:10,011 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 688 transitions. [2021-11-12 22:42:10,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:10,011 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 688 transitions. [2021-11-12 22:42:10,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-12 22:42:10,016 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:42:10,016 INFO L514 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] [2021-11-12 22:42:10,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 22:42:10,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:42:10,229 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-12 22:42:10,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:42:10,229 INFO L85 PathProgramCache]: Analyzing trace with hash -11499310, now seen corresponding path program 8 times [2021-11-12 22:42:10,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:42:10,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [872831434] [2021-11-12 22:42:10,230 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 22:42:10,230 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:42:10,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:42:10,231 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:42:10,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 22:42:10,336 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-12 22:42:10,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:42:10,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-12 22:42:10,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:42:10,825 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-11-12 22:42:10,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2021-11-12 22:42:10,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:42:10,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:42:11,284 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-11-12 22:42:11,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 103 treesize of output 81 [2021-11-12 22:42:31,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:42:31,498 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:42:31,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [872831434] [2021-11-12 22:42:31,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [872831434] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:42:31,499 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:42:31,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-11-12 22:42:31,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222850672] [2021-11-12 22:42:31,499 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:42:31,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-12 22:42:31,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:42:31,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-12 22:42:31,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-12 22:42:31,500 INFO L87 Difference]: Start difference. First operand 236 states and 688 transitions. Second operand has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:32,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:42:32,314 INFO L93 Difference]: Finished difference Result 243 states and 694 transitions. [2021-11-12 22:42:32,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-12 22:42:32,315 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 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 24 [2021-11-12 22:42:32,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:42:32,318 INFO L225 Difference]: With dead ends: 243 [2021-11-12 22:42:32,318 INFO L226 Difference]: Without dead ends: 232 [2021-11-12 22:42:32,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-12 22:42:32,319 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 60 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 699.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.21ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 184 IncrementalHoareTripleChecker+Unchecked, 798.91ms IncrementalHoareTripleChecker+Time [2021-11-12 22:42:32,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 9 Invalid, 415 Unknown, 0 Unchecked, 2.21ms Time], IncrementalHoareTripleChecker [0 Valid, 231 Invalid, 0 Unknown, 184 Unchecked, 798.91ms Time] [2021-11-12 22:42:32,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-11-12 22:42:32,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 222. [2021-11-12 22:42:32,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 2.9728506787330318) internal successors, (657), 221 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:32,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 657 transitions. [2021-11-12 22:42:32,329 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 657 transitions. Word has length 24 [2021-11-12 22:42:32,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:42:32,330 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 657 transitions. [2021-11-12 22:42:32,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:32,330 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 657 transitions. [2021-11-12 22:42:32,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-12 22:42:32,332 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:42:32,332 INFO L514 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] [2021-11-12 22:42:32,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-12 22:42:32,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:42:32,545 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-12 22:42:32,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:42:32,545 INFO L85 PathProgramCache]: Analyzing trace with hash -2063760946, now seen corresponding path program 9 times [2021-11-12 22:42:32,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:42:32,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [990181989] [2021-11-12 22:42:32,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 22:42:32,547 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:42:32,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:42:32,548 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:42:32,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-12 22:42:32,661 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-12 22:42:32,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:42:32,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-12 22:42:32,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:42:33,140 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-11-12 22:42:33,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2021-11-12 22:42:33,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:42:33,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:42:33,621 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-11-12 22:42:33,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 103 treesize of output 81 [2021-11-12 22:42:52,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:42:52,708 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:42:52,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [990181989] [2021-11-12 22:42:52,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [990181989] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:42:52,709 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:42:52,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-11-12 22:42:52,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223330578] [2021-11-12 22:42:52,709 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:42:52,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-12 22:42:52,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:42:52,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-12 22:42:52,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-12 22:42:52,710 INFO L87 Difference]: Start difference. First operand 222 states and 657 transitions. Second operand has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:53,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:42:53,712 INFO L93 Difference]: Finished difference Result 229 states and 663 transitions. [2021-11-12 22:42:53,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-12 22:42:53,713 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 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 24 [2021-11-12 22:42:53,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:42:53,716 INFO L225 Difference]: With dead ends: 229 [2021-11-12 22:42:53,716 INFO L226 Difference]: Without dead ends: 222 [2021-11-12 22:42:53,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-12 22:42:53,717 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 56 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 870.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.93ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 174 IncrementalHoareTripleChecker+Unchecked, 987.67ms IncrementalHoareTripleChecker+Time [2021-11-12 22:42:53,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 10 Invalid, 522 Unknown, 0 Unchecked, 2.93ms Time], IncrementalHoareTripleChecker [0 Valid, 348 Invalid, 0 Unknown, 174 Unchecked, 987.67ms Time] [2021-11-12 22:42:53,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-11-12 22:42:53,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 221. [2021-11-12 22:42:53,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 2.9727272727272727) internal successors, (654), 220 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:53,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 654 transitions. [2021-11-12 22:42:53,728 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 654 transitions. Word has length 24 [2021-11-12 22:42:53,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:42:53,728 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 654 transitions. [2021-11-12 22:42:53,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:53,729 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 654 transitions. [2021-11-12 22:42:53,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-12 22:42:53,730 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:42:53,730 INFO L514 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] [2021-11-12 22:42:53,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-12 22:42:53,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:42:53,945 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-12 22:42:53,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:42:53,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1304307092, now seen corresponding path program 10 times [2021-11-12 22:42:53,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:42:53,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1781880848] [2021-11-12 22:42:53,946 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-12 22:42:53,946 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:42:53,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:42:53,947 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:42:53,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-12 22:42:54,211 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-12 22:42:54,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:42:54,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-12 22:42:54,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:42:54,680 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-11-12 22:42:54,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2021-11-12 22:42:54,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:42:54,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:42:55,210 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-11-12 22:42:55,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 103 treesize of output 81 [2021-11-12 22:43:12,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:43:12,849 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:43:12,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1781880848] [2021-11-12 22:43:12,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1781880848] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:43:12,850 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:43:12,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-11-12 22:43:12,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555708582] [2021-11-12 22:43:12,850 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:43:12,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-12 22:43:12,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:43:12,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-12 22:43:12,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-12 22:43:12,851 INFO L87 Difference]: Start difference. First operand 221 states and 654 transitions. Second operand has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:43:13,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:43:13,793 INFO L93 Difference]: Finished difference Result 228 states and 660 transitions. [2021-11-12 22:43:13,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-12 22:43:13,794 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 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 24 [2021-11-12 22:43:13,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:43:13,796 INFO L225 Difference]: With dead ends: 228 [2021-11-12 22:43:13,796 INFO L226 Difference]: Without dead ends: 220 [2021-11-12 22:43:13,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-12 22:43:13,797 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 51 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 801.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.61ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 233 IncrementalHoareTripleChecker+Unchecked, 928.20ms IncrementalHoareTripleChecker+Time [2021-11-12 22:43:13,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 11 Invalid, 557 Unknown, 0 Unchecked, 2.61ms Time], IncrementalHoareTripleChecker [0 Valid, 324 Invalid, 0 Unknown, 233 Unchecked, 928.20ms Time] [2021-11-12 22:43:13,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-11-12 22:43:13,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2021-11-12 22:43:13,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 2.9771689497716896) internal successors, (652), 219 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:43:13,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 652 transitions. [2021-11-12 22:43:13,807 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 652 transitions. Word has length 24 [2021-11-12 22:43:13,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:43:13,807 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 652 transitions. [2021-11-12 22:43:13,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:43:13,808 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 652 transitions. [2021-11-12 22:43:13,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-12 22:43:13,809 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:43:13,809 INFO L514 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] [2021-11-12 22:43:13,821 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-12 22:43:14,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:43:14,024 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-12 22:43:14,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:43:14,024 INFO L85 PathProgramCache]: Analyzing trace with hash 990257626, now seen corresponding path program 11 times [2021-11-12 22:43:14,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:43:14,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [598991145] [2021-11-12 22:43:14,025 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-12 22:43:14,025 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:43:14,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:43:14,027 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:43:14,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-12 22:43:14,137 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 22:43:14,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:43:14,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-12 22:43:14,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:43:14,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:43:14,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:43:14,968 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:43:14,968 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:43:14,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [598991145] [2021-11-12 22:43:14,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [598991145] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:43:14,968 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:43:14,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-11-12 22:43:14,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078016139] [2021-11-12 22:43:14,968 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:43:14,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-12 22:43:14,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:43:14,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-12 22:43:14,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-11-12 22:43:14,969 INFO L87 Difference]: Start difference. First operand 220 states and 652 transitions. Second operand has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:43:16,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:43:16,237 INFO L93 Difference]: Finished difference Result 327 states and 982 transitions. [2021-11-12 22:43:16,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-12 22:43:16,238 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 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 24 [2021-11-12 22:43:16,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:43:16,240 INFO L225 Difference]: With dead ends: 327 [2021-11-12 22:43:16,241 INFO L226 Difference]: Without dead ends: 320 [2021-11-12 22:43:16,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2021-11-12 22:43:16,242 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 117 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1067.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.26ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1199.61ms IncrementalHoareTripleChecker+Time [2021-11-12 22:43:16,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 8 Invalid, 647 Unknown, 0 Unchecked, 3.26ms Time], IncrementalHoareTripleChecker [15 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 1199.61ms Time] [2021-11-12 22:43:16,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2021-11-12 22:43:16,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 234. [2021-11-12 22:43:16,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 2.9012875536480687) internal successors, (676), 233 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:43:16,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 676 transitions. [2021-11-12 22:43:16,269 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 676 transitions. Word has length 24 [2021-11-12 22:43:16,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:43:16,270 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 676 transitions. [2021-11-12 22:43:16,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:43:16,270 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 676 transitions. [2021-11-12 22:43:16,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-12 22:43:16,270 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:43:16,271 INFO L514 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] [2021-11-12 22:43:16,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-12 22:43:16,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:43:16,471 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-12 22:43:16,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:43:16,472 INFO L85 PathProgramCache]: Analyzing trace with hash -873131244, now seen corresponding path program 12 times [2021-11-12 22:43:16,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:43:16,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1537511044] [2021-11-12 22:43:16,472 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-12 22:43:16,472 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:43:16,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:43:16,474 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:43:16,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-12 22:43:16,612 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-11-12 22:43:16,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:43:16,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:43:16,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:43:16,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:43:16,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:43:16,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:43:16,800 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:43:16,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1537511044] [2021-11-12 22:43:16,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1537511044] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:43:16,801 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:43:16,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-12 22:43:16,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715180739] [2021-11-12 22:43:16,801 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:43:16,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:43:16,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:43:16,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:43:16,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:43:16,803 INFO L87 Difference]: Start difference. First operand 234 states and 676 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:43:16,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:43:16,933 INFO L93 Difference]: Finished difference Result 198 states and 529 transitions. [2021-11-12 22:43:16,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:43:16,933 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 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 24 [2021-11-12 22:43:16,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:43:16,935 INFO L225 Difference]: With dead ends: 198 [2021-11-12 22:43:16,935 INFO L226 Difference]: Without dead ends: 198 [2021-11-12 22:43:16,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:43:16,936 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 8 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 101.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.23ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 125.13ms IncrementalHoareTripleChecker+Time [2021-11-12 22:43:16,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 1 Invalid, 46 Unknown, 0 Unchecked, 0.23ms Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 125.13ms Time] [2021-11-12 22:43:16,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-11-12 22:43:16,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2021-11-12 22:43:16,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 2.685279187817259) internal successors, (529), 197 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:43:16,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 529 transitions. [2021-11-12 22:43:16,945 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 529 transitions. Word has length 24 [2021-11-12 22:43:16,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:43:16,946 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 529 transitions. [2021-11-12 22:43:16,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:43:16,946 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 529 transitions. [2021-11-12 22:43:16,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-12 22:43:16,947 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:43:16,948 INFO L514 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] [2021-11-12 22:43:16,965 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-11-12 22:43:17,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:43:17,161 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-12 22:43:17,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:43:17,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1162764132, now seen corresponding path program 13 times [2021-11-12 22:43:17,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:43:17,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1522789732] [2021-11-12 22:43:17,162 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-12 22:43:17,163 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:43:17,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:43:17,163 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:43:17,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c8904b6-8b66-49a9-b617-efd85e498997/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-12 22:43:17,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:43:17,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-12 22:43:17,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:43:18,415 INFO L354 Elim1Store]: treesize reduction 554, result has 0.2 percent of original size [2021-11-12 22:43:18,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 174 treesize of output 34 [2021-11-12 22:43:18,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:43:18,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:43:27,356 WARN L227 SmtUtils]: Spent 7.21s on a formula simplification. DAG size of input: 530 DAG size of output: 322 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-12 22:43:27,366 INFO L354 Elim1Store]: treesize reduction 1008, result has 56.0 percent of original size [2021-11-12 22:43:27,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 185 treesize of output 1329