./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs --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 66bad0b3af9652533ba2b1d57f9db188817907af ............................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs --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 66bad0b3af9652533ba2b1d57f9db188817907af ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:31:07,619 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:31:07,622 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:31:07,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:31:07,697 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:31:07,703 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:31:07,706 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:31:07,712 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:31:07,716 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:31:07,723 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:31:07,724 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:31:07,727 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:31:07,727 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:31:07,731 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:31:07,734 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:31:07,744 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:31:07,747 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:31:07,748 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:31:07,752 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:31:07,764 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:31:07,767 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:31:07,769 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:31:07,773 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:31:07,774 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:31:07,780 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:31:07,781 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:31:07,781 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:31:07,784 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:31:07,785 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:31:07,787 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:31:07,788 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:31:07,789 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:31:07,792 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:31:07,793 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:31:07,795 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:31:07,796 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:31:07,797 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:31:07,797 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:31:07,797 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:31:07,799 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:31:07,800 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:31:07,801 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:31:07,858 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:31:07,861 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:31:07,863 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:31:07,863 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:31:07,863 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:31:07,864 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:31:07,864 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:31:07,864 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:31:07,865 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:31:07,865 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:31:07,866 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:31:07,867 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:31:07,867 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:31:07,867 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:31:07,868 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:31:07,869 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:31:07,869 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:31:07,869 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:31:07,870 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:31:07,870 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:31:07,870 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:31:07,870 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:31:07,871 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:31:07,871 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:31:07,871 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:31:07,872 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:31:07,872 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:31:07,872 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:31:07,873 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:31:07,874 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:31:07,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:31:07,875 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:31:07,875 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:31:07,876 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:31:07,876 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:31:07,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:31:07,877 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:31:07,877 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:31:07,877 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:31:07,877 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_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 66bad0b3af9652533ba2b1d57f9db188817907af [2021-10-16 02:31:08,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:31:08,268 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:31:08,271 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:31:08,276 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:31:08,277 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:31:08,279 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c [2021-10-16 02:31:08,369 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/data/f33aa3119/f7ba9194db7f498f8512b3c2d0aa5b31/FLAG93a0502dd [2021-10-16 02:31:09,071 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:31:09,071 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c [2021-10-16 02:31:09,088 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/data/f33aa3119/f7ba9194db7f498f8512b3c2d0aa5b31/FLAG93a0502dd [2021-10-16 02:31:09,369 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/data/f33aa3119/f7ba9194db7f498f8512b3c2d0aa5b31 [2021-10-16 02:31:09,387 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:31:09,389 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:31:09,391 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:31:09,392 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:31:09,397 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:31:09,398 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:31:09" (1/1) ... [2021-10-16 02:31:09,401 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ec7184c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:09, skipping insertion in model container [2021-10-16 02:31:09,402 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:31:09" (1/1) ... [2021-10-16 02:31:09,410 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:31:09,460 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:31:09,789 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_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c[3648,3661] [2021-10-16 02:31:09,801 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:31:09,813 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-10-16 02:31:09,814 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@785bc3a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:09, skipping insertion in model container [2021-10-16 02:31:09,814 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:31:09,815 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-16 02:31:09,818 INFO L168 Benchmark]: Toolchain (without parser) took 426.60 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 48.4 MB in the beginning and 79.7 MB in the end (delta: -31.3 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:31:09,819 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 86.0 MB. Free memory is still 64.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:31:09,820 INFO L168 Benchmark]: CACSL2BoogieTranslator took 423.28 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 48.2 MB in the beginning and 79.7 MB in the end (delta: -31.6 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:31:09,822 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 86.0 MB. Free memory is still 64.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 423.28 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 48.2 MB in the beginning and 79.7 MB in the end (delta: -31.6 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 139]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:31:12,450 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:31:12,453 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:31:12,496 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:31:12,497 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:31:12,498 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:31:12,501 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:31:12,504 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:31:12,507 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:31:12,508 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:31:12,510 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:31:12,512 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:31:12,513 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:31:12,515 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:31:12,517 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:31:12,520 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:31:12,521 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:31:12,523 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:31:12,526 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:31:12,530 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:31:12,532 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:31:12,534 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:31:12,537 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:31:12,538 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:31:12,543 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:31:12,544 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:31:12,544 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:31:12,546 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:31:12,547 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:31:12,549 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:31:12,550 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:31:12,551 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:31:12,552 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:31:12,554 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:31:12,555 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:31:12,556 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:31:12,557 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:31:12,569 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:31:12,570 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:31:12,571 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:31:12,572 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:31:12,577 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 02:31:12,636 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:31:12,636 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:31:12,638 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:31:12,638 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:31:12,639 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:31:12,639 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:31:12,639 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:31:12,640 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:31:12,640 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:31:12,642 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:31:12,643 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:31:12,644 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:31:12,644 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:31:12,644 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:31:12,645 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:31:12,645 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:31:12,645 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:31:12,645 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:31:12,646 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:31:12,646 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:31:12,646 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:31:12,647 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:31:12,647 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:31:12,647 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:31:12,648 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:31:12,648 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:31:12,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:31:12,648 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:31:12,649 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:31:12,649 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:31:12,649 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:31:12,650 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:31:12,650 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:31:12,650 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:31:12,651 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:31:12,651 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_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 66bad0b3af9652533ba2b1d57f9db188817907af [2021-10-16 02:31:13,159 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:31:13,195 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:31:13,198 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:31:13,199 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:31:13,201 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:31:13,203 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c [2021-10-16 02:31:13,309 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/data/a9f2c07fc/219eb8c39a5b41b2bb558fab7090fbd3/FLAG6f041ba78 [2021-10-16 02:31:14,073 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:31:14,075 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c [2021-10-16 02:31:14,088 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/data/a9f2c07fc/219eb8c39a5b41b2bb558fab7090fbd3/FLAG6f041ba78 [2021-10-16 02:31:14,356 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/data/a9f2c07fc/219eb8c39a5b41b2bb558fab7090fbd3 [2021-10-16 02:31:14,359 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:31:14,361 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:31:14,363 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:31:14,364 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:31:14,368 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:31:14,369 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:31:14" (1/1) ... [2021-10-16 02:31:14,371 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@785eb1b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:14, skipping insertion in model container [2021-10-16 02:31:14,371 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:31:14" (1/1) ... [2021-10-16 02:31:14,381 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:31:14,408 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:31:14,692 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_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c[3648,3661] [2021-10-16 02:31:14,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:31:14,743 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-16 02:31:14,763 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:31:14,853 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_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c[3648,3661] [2021-10-16 02:31:14,861 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:31:14,884 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:31:14,938 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_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c[3648,3661] [2021-10-16 02:31:14,944 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:31:14,978 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:31:14,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:14 WrapperNode [2021-10-16 02:31:14,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:31:14,982 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:31:14,982 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:31:14,982 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:31:14,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:14" (1/1) ... [2021-10-16 02:31:15,021 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:14" (1/1) ... [2021-10-16 02:31:15,085 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:31:15,086 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:31:15,086 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:31:15,086 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:31:15,102 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:14" (1/1) ... [2021-10-16 02:31:15,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:14" (1/1) ... [2021-10-16 02:31:15,125 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:14" (1/1) ... [2021-10-16 02:31:15,126 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:14" (1/1) ... [2021-10-16 02:31:15,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:14" (1/1) ... [2021-10-16 02:31:15,165 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:14" (1/1) ... [2021-10-16 02:31:15,174 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:14" (1/1) ... [2021-10-16 02:31:15,179 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:31:15,189 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:31:15,190 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:31:15,190 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:31:15,191 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:14" (1/1) ... [2021-10-16 02:31:15,199 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:31:15,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:31:15,234 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:31:15,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:31:15,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:31:15,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:31:15,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-16 02:31:15,308 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-16 02:31:15,308 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-16 02:31:15,308 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-16 02:31:15,309 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-16 02:31:15,309 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-16 02:31:15,309 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-16 02:31:15,309 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-10-16 02:31:15,309 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-10-16 02:31:15,309 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-16 02:31:15,309 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-16 02:31:15,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-16 02:31:15,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:31:15,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:31:15,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 02:31:15,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-16 02:31:15,312 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-16 02:31:17,366 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:31:17,366 INFO L299 CfgBuilder]: Removed 54 assume(true) statements. [2021-10-16 02:31:17,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:31:17 BoogieIcfgContainer [2021-10-16 02:31:17,369 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:31:17,371 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:31:17,372 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:31:17,382 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:31:17,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:31:14" (1/3) ... [2021-10-16 02:31:17,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5163f8c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:31:17, skipping insertion in model container [2021-10-16 02:31:17,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:14" (2/3) ... [2021-10-16 02:31:17,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5163f8c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:31:17, skipping insertion in model container [2021-10-16 02:31:17,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:31:17" (3/3) ... [2021-10-16 02:31:17,393 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult.wvr.c [2021-10-16 02:31:17,405 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-16 02:31:17,406 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:31:17,406 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:31:17,406 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-16 02:31:17,472 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,472 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,473 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,473 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,473 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,473 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,474 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,474 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,474 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,474 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,475 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,475 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,475 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,476 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,477 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,477 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,477 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,479 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,479 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,479 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,479 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,480 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,480 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,480 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,481 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,481 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,482 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,483 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,484 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,484 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,484 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,484 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,485 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,485 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,485 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,490 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,490 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,491 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,491 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,491 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,492 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,492 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,506 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,512 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,513 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,513 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,513 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,513 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,514 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,514 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,515 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,515 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,517 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,517 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,519 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,519 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,519 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,519 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,520 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,520 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,520 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,520 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~ret13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,520 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,521 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,521 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,522 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,522 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,522 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,522 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,523 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,523 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,523 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~ret13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,523 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,523 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,524 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,525 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,534 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,534 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,534 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,537 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,538 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,539 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,539 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,539 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,540 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,547 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,548 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,548 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,552 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,553 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,553 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,553 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,554 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,554 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,555 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,558 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,558 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,558 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,559 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,559 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,559 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~ret13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,559 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,560 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,560 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,560 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,560 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,560 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,565 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,565 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,566 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,566 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,566 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,566 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,567 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:31:17,588 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-10-16 02:31:17,656 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:31:17,664 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, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 02:31:17,664 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-10-16 02:31:17,686 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-16 02:31:17,700 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 190 places, 195 transitions, 422 flow [2021-10-16 02:31:17,704 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 190 places, 195 transitions, 422 flow [2021-10-16 02:31:17,706 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 190 places, 195 transitions, 422 flow [2021-10-16 02:31:17,823 INFO L129 PetriNetUnfolder]: 18/191 cut-off events. [2021-10-16 02:31:17,823 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-16 02:31:17,836 INFO L84 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 191 events. 18/191 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 89 event pairs, 0 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 157. Up to 2 conditions per place. [2021-10-16 02:31:17,843 INFO L116 LiptonReduction]: Number of co-enabled transitions 1376 [2021-10-16 02:31:42,289 WARN L207 SmtUtils]: Spent 6.81 s on a formula simplification. DAG size of input: 171 DAG size of output: 170 [2021-10-16 02:31:50,829 WARN L207 SmtUtils]: Spent 6.67 s on a formula simplification. DAG size of input: 177 DAG size of output: 174 [2021-10-16 02:31:52,774 INFO L131 LiptonReduction]: Checked pairs total: 3186 [2021-10-16 02:31:52,774 INFO L133 LiptonReduction]: Total number of compositions: 185 [2021-10-16 02:31:52,785 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 45 places, 38 transitions, 108 flow [2021-10-16 02:31:52,845 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 324 states, 323 states have (on average 4.027863777089784) internal successors, (1301), 323 states have internal predecessors, (1301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:31:52,851 INFO L276 IsEmpty]: Start isEmpty. Operand has 324 states, 323 states have (on average 4.027863777089784) internal successors, (1301), 323 states have internal predecessors, (1301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:31:52,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-16 02:31:52,889 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:31:52,890 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:31:52,891 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-16 02:31:52,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:31:52,900 INFO L82 PathProgramCache]: Analyzing trace with hash -310558535, now seen corresponding path program 1 times [2021-10-16 02:31:52,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:31:52,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1804239856] [2021-10-16 02:31:52,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:52,922 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:31:52,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:31:52,929 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:31:52,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:31:53,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:53,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:31:53,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:53,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:31:53,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:53,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:31:53,574 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:31:53,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1804239856] [2021-10-16 02:31:53,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1804239856] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:31:53,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:31:53,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-16 02:31:53,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215795557] [2021-10-16 02:31:53,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:31:53,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:31:53,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:31:53,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:31:53,607 INFO L87 Difference]: Start difference. First operand has 324 states, 323 states have (on average 4.027863777089784) internal successors, (1301), 323 states have internal predecessors, (1301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:31:53,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:31:53,699 INFO L93 Difference]: Finished difference Result 619 states and 2529 transitions. [2021-10-16 02:31:53,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:31:53,701 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-16 02:31:53,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:31:53,726 INFO L225 Difference]: With dead ends: 619 [2021-10-16 02:31:53,726 INFO L226 Difference]: Without dead ends: 590 [2021-10-16 02:31:53,727 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:31:53,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2021-10-16 02:31:53,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 440. [2021-10-16 02:31:53,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 439 states have (on average 4.0592255125284735) internal successors, (1782), 439 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:31:53,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 1782 transitions. [2021-10-16 02:31:53,885 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 1782 transitions. Word has length 23 [2021-10-16 02:31:53,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:31:53,887 INFO L470 AbstractCegarLoop]: Abstraction has 440 states and 1782 transitions. [2021-10-16 02:31:53,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:31:53,887 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 1782 transitions. [2021-10-16 02:31:53,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-16 02:31:53,894 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:31:53,894 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:31:53,921 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-16 02:31:54,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:31:54,107 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-16 02:31:54,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:31:54,108 INFO L82 PathProgramCache]: Analyzing trace with hash -37149897, now seen corresponding path program 1 times [2021-10-16 02:31:54,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:31:54,109 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2126168713] [2021-10-16 02:31:54,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:54,109 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:31:54,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:31:54,111 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:31:54,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:31:54,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:54,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:31:54,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:54,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:31:54,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:54,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:31:54,771 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:31:54,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2126168713] [2021-10-16 02:31:54,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2126168713] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:31:54,772 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:31:54,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-16 02:31:54,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635099363] [2021-10-16 02:31:54,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:31:54,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:31:54,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:31:54,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:31:54,775 INFO L87 Difference]: Start difference. First operand 440 states and 1782 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:31:55,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:31:55,057 INFO L93 Difference]: Finished difference Result 928 states and 3404 transitions. [2021-10-16 02:31:55,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:31:55,058 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-16 02:31:55,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:31:55,074 INFO L225 Difference]: With dead ends: 928 [2021-10-16 02:31:55,074 INFO L226 Difference]: Without dead ends: 866 [2021-10-16 02:31:55,075 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 41.4ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:31:55,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2021-10-16 02:31:55,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 614. [2021-10-16 02:31:55,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 613 states have (on average 4.0261011419249595) internal successors, (2468), 613 states have internal predecessors, (2468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:31:55,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 2468 transitions. [2021-10-16 02:31:55,171 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 2468 transitions. Word has length 25 [2021-10-16 02:31:55,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:31:55,172 INFO L470 AbstractCegarLoop]: Abstraction has 614 states and 2468 transitions. [2021-10-16 02:31:55,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:31:55,172 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 2468 transitions. [2021-10-16 02:31:55,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-16 02:31:55,194 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:31:55,194 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:31:55,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:31:55,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:31:55,414 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-16 02:31:55,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:31:55,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1006907333, now seen corresponding path program 1 times [2021-10-16 02:31:55,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:31:55,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1813916895] [2021-10-16 02:31:55,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:55,416 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:31:55,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:31:55,417 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:31:55,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:31:55,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:55,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:31:55,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:55,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:31:55,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:55,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:31:55,974 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:31:55,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1813916895] [2021-10-16 02:31:55,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1813916895] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:31:55,974 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:31:55,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-16 02:31:55,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821266509] [2021-10-16 02:31:55,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:31:55,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:31:55,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:31:55,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:31:55,976 INFO L87 Difference]: Start difference. First operand 614 states and 2468 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:31:56,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:31:56,065 INFO L93 Difference]: Finished difference Result 1146 states and 4397 transitions. [2021-10-16 02:31:56,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:31:56,067 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-16 02:31:56,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:31:56,082 INFO L225 Difference]: With dead ends: 1146 [2021-10-16 02:31:56,082 INFO L226 Difference]: Without dead ends: 1070 [2021-10-16 02:31:56,083 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:31:56,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2021-10-16 02:31:56,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 836. [2021-10-16 02:31:56,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 835 states have (on average 4.023952095808383) internal successors, (3360), 835 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:31:56,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 3360 transitions. [2021-10-16 02:31:56,155 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 3360 transitions. Word has length 25 [2021-10-16 02:31:56,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:31:56,156 INFO L470 AbstractCegarLoop]: Abstraction has 836 states and 3360 transitions. [2021-10-16 02:31:56,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:31:56,156 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 3360 transitions. [2021-10-16 02:31:56,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-16 02:31:56,161 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:31:56,161 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:31:56,179 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-16 02:31:56,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:31:56,375 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-16 02:31:56,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:31:56,375 INFO L82 PathProgramCache]: Analyzing trace with hash 121466413, now seen corresponding path program 1 times [2021-10-16 02:31:56,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:31:56,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [619371737] [2021-10-16 02:31:56,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:56,377 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:31:56,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:31:56,379 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:31:56,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 02:31:56,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:56,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-16 02:31:56,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:56,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:31:56,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:57,048 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:31:57,048 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:31:57,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [619371737] [2021-10-16 02:31:57,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [619371737] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:31:57,050 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:31:57,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 02:31:57,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340317580] [2021-10-16 02:31:57,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:31:57,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:31:57,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:31:57,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:31:57,053 INFO L87 Difference]: Start difference. First operand 836 states and 3360 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:31:57,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:31:57,216 INFO L93 Difference]: Finished difference Result 1158 states and 4371 transitions. [2021-10-16 02:31:57,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:31:57,219 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-16 02:31:57,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:31:57,233 INFO L225 Difference]: With dead ends: 1158 [2021-10-16 02:31:57,234 INFO L226 Difference]: Without dead ends: 1096 [2021-10-16 02:31:57,234 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 92.6ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:31:57,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2021-10-16 02:31:57,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 960. [2021-10-16 02:31:57,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 959 states have (on average 3.9697601668404587) internal successors, (3807), 959 states have internal predecessors, (3807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:31:57,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 3807 transitions. [2021-10-16 02:31:57,295 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 3807 transitions. Word has length 27 [2021-10-16 02:31:57,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:31:57,295 INFO L470 AbstractCegarLoop]: Abstraction has 960 states and 3807 transitions. [2021-10-16 02:31:57,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:31:57,296 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 3807 transitions. [2021-10-16 02:31:57,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-16 02:31:57,302 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:31:57,302 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:31:57,318 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-16 02:31:57,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:31:57,518 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-16 02:31:57,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:31:57,519 INFO L82 PathProgramCache]: Analyzing trace with hash -112417971, now seen corresponding path program 1 times [2021-10-16 02:31:57,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:31:57,519 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1659876879] [2021-10-16 02:31:57,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:57,520 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:31:57,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:31:57,521 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:31:57,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-16 02:31:57,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:57,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-16 02:31:57,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:57,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:31:57,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:58,087 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:31:58,087 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:31:58,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1659876879] [2021-10-16 02:31:58,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1659876879] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:31:58,088 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:31:58,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-16 02:31:58,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218200686] [2021-10-16 02:31:58,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:31:58,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:31:58,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:31:58,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:31:58,090 INFO L87 Difference]: Start difference. First operand 960 states and 3807 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:31:58,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:31:58,227 INFO L93 Difference]: Finished difference Result 1273 states and 4783 transitions. [2021-10-16 02:31:58,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:31:58,229 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-16 02:31:58,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:31:58,246 INFO L225 Difference]: With dead ends: 1273 [2021-10-16 02:31:58,246 INFO L226 Difference]: Without dead ends: 1210 [2021-10-16 02:31:58,247 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.5ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:31:58,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2021-10-16 02:31:58,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1010. [2021-10-16 02:31:58,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1010 states, 1009 states have (on average 3.9613478691774033) internal successors, (3997), 1009 states have internal predecessors, (3997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:31:58,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1010 states to 1010 states and 3997 transitions. [2021-10-16 02:31:58,325 INFO L78 Accepts]: Start accepts. Automaton has 1010 states and 3997 transitions. Word has length 27 [2021-10-16 02:31:58,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:31:58,326 INFO L470 AbstractCegarLoop]: Abstraction has 1010 states and 3997 transitions. [2021-10-16 02:31:58,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:31:58,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1010 states and 3997 transitions. [2021-10-16 02:31:58,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-16 02:31:58,332 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:31:58,333 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:31:58,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-16 02:31:58,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:31:58,548 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-16 02:31:58,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:31:58,548 INFO L82 PathProgramCache]: Analyzing trace with hash 488407636, now seen corresponding path program 1 times [2021-10-16 02:31:58,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:31:58,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [952038149] [2021-10-16 02:31:58,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:58,549 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:31:58,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:31:58,551 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:31:58,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-16 02:31:58,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:58,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:31:58,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:59,137 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 02:31:59,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:59,352 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 02:31:59,352 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:31:59,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [952038149] [2021-10-16 02:31:59,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [952038149] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:31:59,353 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:31:59,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-16 02:31:59,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809562057] [2021-10-16 02:31:59,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 02:31:59,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:31:59,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 02:31:59,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:31:59,355 INFO L87 Difference]: Start difference. First operand 1010 states and 3997 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:31:59,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:31:59,964 INFO L93 Difference]: Finished difference Result 2232 states and 8167 transitions. [2021-10-16 02:31:59,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-16 02:31:59,965 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-16 02:31:59,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:31:59,992 INFO L225 Difference]: With dead ends: 2232 [2021-10-16 02:31:59,992 INFO L226 Difference]: Without dead ends: 2124 [2021-10-16 02:31:59,993 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 164.3ms TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-10-16 02:32:00,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2124 states. [2021-10-16 02:32:00,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2124 to 1248. [2021-10-16 02:32:00,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1248 states, 1247 states have (on average 3.9839615076182837) internal successors, (4968), 1247 states have internal predecessors, (4968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:00,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 4968 transitions. [2021-10-16 02:32:00,085 INFO L78 Accepts]: Start accepts. Automaton has 1248 states and 4968 transitions. Word has length 28 [2021-10-16 02:32:00,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:32:00,085 INFO L470 AbstractCegarLoop]: Abstraction has 1248 states and 4968 transitions. [2021-10-16 02:32:00,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:00,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states and 4968 transitions. [2021-10-16 02:32:00,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-16 02:32:00,093 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:32:00,093 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:32:00,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-16 02:32:00,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:32:00,309 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-16 02:32:00,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:32:00,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1667411400, now seen corresponding path program 2 times [2021-10-16 02:32:00,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:32:00,310 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1108394739] [2021-10-16 02:32:00,310 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:32:00,310 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:32:00,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:32:00,311 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:32:00,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-16 02:32:00,724 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:32:00,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:32:00,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-16 02:32:00,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:32:00,980 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 02:32:00,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:32:01,431 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 02:32:01,431 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:32:01,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1108394739] [2021-10-16 02:32:01,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1108394739] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:32:01,432 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:32:01,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 6] imperfect sequences [] total 9 [2021-10-16 02:32:01,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508806401] [2021-10-16 02:32:01,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-16 02:32:01,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:32:01,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-16 02:32:01,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:32:01,434 INFO L87 Difference]: Start difference. First operand 1248 states and 4968 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:02,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:32:02,552 INFO L93 Difference]: Finished difference Result 1756 states and 6182 transitions. [2021-10-16 02:32:02,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-16 02:32:02,554 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-16 02:32:02,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:32:02,574 INFO L225 Difference]: With dead ends: 1756 [2021-10-16 02:32:02,574 INFO L226 Difference]: Without dead ends: 1649 [2021-10-16 02:32:02,575 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 418.2ms TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-10-16 02:32:02,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1649 states. [2021-10-16 02:32:02,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1649 to 1041. [2021-10-16 02:32:02,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1041 states, 1040 states have (on average 3.893269230769231) internal successors, (4049), 1040 states have internal predecessors, (4049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:02,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 4049 transitions. [2021-10-16 02:32:02,646 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 4049 transitions. Word has length 28 [2021-10-16 02:32:02,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:32:02,647 INFO L470 AbstractCegarLoop]: Abstraction has 1041 states and 4049 transitions. [2021-10-16 02:32:02,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:02,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 4049 transitions. [2021-10-16 02:32:02,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-16 02:32:02,653 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:32:02,653 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:32:02,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-16 02:32:02,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:32:02,870 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-16 02:32:02,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:32:02,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1025517982, now seen corresponding path program 3 times [2021-10-16 02:32:02,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:32:02,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [975910603] [2021-10-16 02:32:02,871 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-16 02:32:02,871 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:32:02,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:32:02,875 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:32:02,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-16 02:32:03,316 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-16 02:32:03,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:32:03,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-16 02:32:03,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:32:03,661 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 02:32:03,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:32:04,128 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 02:32:04,129 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:32:04,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [975910603] [2021-10-16 02:32:04,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [975910603] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:32:04,129 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:32:04,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [] total 10 [2021-10-16 02:32:04,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877320587] [2021-10-16 02:32:04,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-16 02:32:04,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:32:04,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-16 02:32:04,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-10-16 02:32:04,131 INFO L87 Difference]: Start difference. First operand 1041 states and 4049 transitions. Second operand has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:05,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:32:05,040 INFO L93 Difference]: Finished difference Result 2601 states and 9451 transitions. [2021-10-16 02:32:05,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-16 02:32:05,042 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-16 02:32:05,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:32:05,068 INFO L225 Difference]: With dead ends: 2601 [2021-10-16 02:32:05,068 INFO L226 Difference]: Without dead ends: 2353 [2021-10-16 02:32:05,068 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 489.0ms TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2021-10-16 02:32:05,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2353 states. [2021-10-16 02:32:05,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2353 to 1591. [2021-10-16 02:32:05,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1591 states, 1590 states have (on average 4.022012578616352) internal successors, (6395), 1590 states have internal predecessors, (6395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:05,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1591 states to 1591 states and 6395 transitions. [2021-10-16 02:32:05,178 INFO L78 Accepts]: Start accepts. Automaton has 1591 states and 6395 transitions. Word has length 28 [2021-10-16 02:32:05,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:32:05,179 INFO L470 AbstractCegarLoop]: Abstraction has 1591 states and 6395 transitions. [2021-10-16 02:32:05,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:05,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1591 states and 6395 transitions. [2021-10-16 02:32:05,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-16 02:32:05,187 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:32:05,187 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:32:05,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-16 02:32:05,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:32:05,402 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-16 02:32:05,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:32:05,403 INFO L82 PathProgramCache]: Analyzing trace with hash -840810280, now seen corresponding path program 4 times [2021-10-16 02:32:05,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:32:05,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1956523376] [2021-10-16 02:32:05,404 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-16 02:32:05,404 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:32:05,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:32:05,405 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:32:05,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-16 02:32:05,742 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-16 02:32:05,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:32:05,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-16 02:32:05,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:32:06,710 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:32:06,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:32:08,435 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:32:08,436 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:32:08,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1956523376] [2021-10-16 02:32:08,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1956523376] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:32:08,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1446859016] [2021-10-16 02:32:08,436 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-16 02:32:08,436 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:32:08,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:32:08,438 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:32:08,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-10-16 02:32:08,924 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-16 02:32:08,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:32:08,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-16 02:32:08,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:32:09,684 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 02:32:09,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:32:10,718 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 02:32:10,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1446859016] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:32:10,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774805944] [2021-10-16 02:32:10,719 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-16 02:32:10,720 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:32:10,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:32:10,723 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:32:10,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-16 02:32:11,098 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-16 02:32:11,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:32:11,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:32:11,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:32:11,432 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 02:32:11,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:32:12,044 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 02:32:12,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774805944] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:32:12,045 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:32:12,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7, 7, 5, 5] total 29 [2021-10-16 02:32:12,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509020282] [2021-10-16 02:32:12,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-16 02:32:12,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:32:12,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-16 02:32:12,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=707, Unknown=0, NotChecked=0, Total=870 [2021-10-16 02:32:12,048 INFO L87 Difference]: Start difference. First operand 1591 states and 6395 transitions. Second operand has 30 states, 30 states have (on average 3.8333333333333335) internal successors, (115), 29 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:52,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:32:52,888 INFO L93 Difference]: Finished difference Result 12271 states and 44764 transitions. [2021-10-16 02:32:52,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2021-10-16 02:32:52,908 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.8333333333333335) internal successors, (115), 29 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-16 02:32:52,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:32:53,101 INFO L225 Difference]: With dead ends: 12271 [2021-10-16 02:32:53,102 INFO L226 Difference]: Without dead ends: 9372 [2021-10-16 02:32:53,113 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 144 SyntacticMatches, 2 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11186 ImplicationChecksByTransitivity, 28028.7ms TimeCoverageRelationStatistics Valid=4479, Invalid=23577, Unknown=0, NotChecked=0, Total=28056 [2021-10-16 02:32:53,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9372 states. [2021-10-16 02:32:53,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9372 to 2712. [2021-10-16 02:32:53,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2712 states, 2711 states have (on average 4.250092216894135) internal successors, (11522), 2711 states have internal predecessors, (11522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:53,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2712 states to 2712 states and 11522 transitions. [2021-10-16 02:32:53,602 INFO L78 Accepts]: Start accepts. Automaton has 2712 states and 11522 transitions. Word has length 30 [2021-10-16 02:32:53,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:32:53,602 INFO L470 AbstractCegarLoop]: Abstraction has 2712 states and 11522 transitions. [2021-10-16 02:32:53,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.8333333333333335) internal successors, (115), 29 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:53,603 INFO L276 IsEmpty]: Start isEmpty. Operand 2712 states and 11522 transitions. [2021-10-16 02:32:53,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-16 02:32:53,616 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:32:53,617 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:32:53,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-16 02:32:53,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-16 02:32:54,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-10-16 02:32:54,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:32:54,245 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-16 02:32:54,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:32:54,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1942268657, now seen corresponding path program 1 times [2021-10-16 02:32:54,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:32:54,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [241282324] [2021-10-16 02:32:54,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:54,247 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:32:54,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:32:54,278 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:32:54,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-16 02:32:54,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:32:54,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-16 02:32:54,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:32:55,277 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 02:32:55,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:32:55,722 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 02:32:55,722 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:32:55,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [241282324] [2021-10-16 02:32:55,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [241282324] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:32:55,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [38693044] [2021-10-16 02:32:55,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:55,723 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:32:55,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:32:55,723 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:32:55,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-10-16 02:32:56,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:32:56,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 02:32:56,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:32:56,676 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 02:32:56,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:32:56,877 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 02:32:56,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [38693044] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:32:56,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55012263] [2021-10-16 02:32:56,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:56,878 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:32:56,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:32:56,879 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:32:56,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-16 02:32:57,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:32:57,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 02:32:57,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:32:57,736 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 02:32:57,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:32:57,956 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 02:32:57,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55012263] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:32:57,957 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:32:57,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 11 [2021-10-16 02:32:57,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528122175] [2021-10-16 02:32:57,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-16 02:32:57,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:32:57,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-16 02:32:57,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-10-16 02:32:57,958 INFO L87 Difference]: Start difference. First operand 2712 states and 11522 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:58,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:32:58,537 INFO L93 Difference]: Finished difference Result 5688 states and 24424 transitions. [2021-10-16 02:32:58,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-16 02:32:58,540 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-16 02:32:58,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:32:58,573 INFO L225 Difference]: With dead ends: 5688 [2021-10-16 02:32:58,573 INFO L226 Difference]: Without dead ends: 5688 [2021-10-16 02:32:58,573 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 168 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 350.2ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-10-16 02:32:58,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5688 states. [2021-10-16 02:32:58,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5688 to 3350. [2021-10-16 02:32:58,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3350 states, 3349 states have (on average 4.2797850104508806) internal successors, (14333), 3349 states have internal predecessors, (14333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:58,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3350 states to 3350 states and 14333 transitions. [2021-10-16 02:32:58,806 INFO L78 Accepts]: Start accepts. Automaton has 3350 states and 14333 transitions. Word has length 31 [2021-10-16 02:32:58,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:32:58,807 INFO L470 AbstractCegarLoop]: Abstraction has 3350 states and 14333 transitions. [2021-10-16 02:32:58,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:32:58,807 INFO L276 IsEmpty]: Start isEmpty. Operand 3350 states and 14333 transitions. [2021-10-16 02:32:58,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-16 02:32:58,823 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:32:58,823 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:32:58,827 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2021-10-16 02:32:59,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-16 02:32:59,237 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-10-16 02:32:59,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:32:59,428 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-16 02:32:59,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:32:59,429 INFO L82 PathProgramCache]: Analyzing trace with hash 266264431, now seen corresponding path program 1 times [2021-10-16 02:32:59,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:32:59,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1709360921] [2021-10-16 02:32:59,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:32:59,430 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:32:59,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:32:59,431 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:32:59,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-16 02:33:00,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:00,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-16 02:33:00,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:33:00,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:33:00,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:33:00,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:33:00,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:33:00,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:33:00,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:33:00,775 INFO L354 Elim1Store]: treesize reduction 419, result has 12.9 percent of original size [2021-10-16 02:33:00,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 186 treesize of output 222 [2021-10-16 02:33:02,924 INFO L354 Elim1Store]: treesize reduction 56, result has 23.3 percent of original size [2021-10-16 02:33:02,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 45 treesize of output 51 [2021-10-16 02:33:03,536 INFO L354 Elim1Store]: treesize reduction 163, result has 15.1 percent of original size [2021-10-16 02:33:03,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 47 [2021-10-16 02:36:07,651 WARN L207 SmtUtils]: Spent 2.90 m on a formula simplification. DAG size of input: 572 DAG size of output: 148 [2021-10-16 02:36:07,653 INFO L354 Elim1Store]: treesize reduction 3448, result has 12.2 percent of original size [2021-10-16 02:36:07,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 1 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 65 case distinctions, treesize of input 220 treesize of output 552 [2021-10-16 02:41:13,674 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-16 02:41:13,675 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:41:13,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1709360921] [2021-10-16 02:41:13,675 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-10-16 02:41:13,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1676097791] [2021-10-16 02:41:13,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:41:13,675 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:41:13,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:41:13,677 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:41:13,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-10-16 02:41:13,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-10-16 02:41:15,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:41:15,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 59 conjunts are in the unsatisfiable core [2021-10-16 02:41:15,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:41:15,260 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-10-16 02:41:15,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180045081] [2021-10-16 02:41:15,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:41:15,261 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:41:15,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:41:15,262 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:41:15,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-16 02:41:15,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:41:15,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 53 conjunts are in the unsatisfiable core [2021-10-16 02:41:15,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:41:15,920 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-10-16 02:41:15,920 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:41:15,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-16 02:41:15,920 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-10-16 02:41:15,921 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-16 02:41:15,926 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:41:15,928 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-16 02:41:15,929 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-16 02:41:15,929 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-16 02:41:15,929 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATION [2021-10-16 02:41:15,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-16 02:41:16,133 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2021-10-16 02:41:16,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-16 02:41:16,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb5f2580-c85a-4a83-b5cd-5adbb4c541c4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:41:16,534 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-16 02:41:16,535 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:41:16,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:41:16 BasicIcfg [2021-10-16 02:41:16,586 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:41:16,595 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:41:16,595 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:41:16,595 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:41:16,596 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:31:17" (3/4) ... [2021-10-16 02:41:16,598 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-16 02:41:16,598 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:41:16,599 INFO L168 Benchmark]: Toolchain (without parser) took 602237.80 ms. Allocated memory was 79.7 MB in the beginning and 274.7 MB in the end (delta: 195.0 MB). Free memory was 44.4 MB in the beginning and 107.7 MB in the end (delta: -63.3 MB). Peak memory consumption was 133.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:41:16,599 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 79.7 MB. Free memory was 60.9 MB in the beginning and 60.8 MB in the end (delta: 72.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:41:16,599 INFO L168 Benchmark]: CACSL2BoogieTranslator took 615.61 ms. Allocated memory is still 79.7 MB. Free memory was 44.2 MB in the beginning and 61.0 MB in the end (delta: -16.8 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2021-10-16 02:41:16,600 INFO L168 Benchmark]: Boogie Procedure Inliner took 103.50 ms. Allocated memory is still 79.7 MB. Free memory was 61.0 MB in the beginning and 58.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:41:16,600 INFO L168 Benchmark]: Boogie Preprocessor took 102.51 ms. Allocated memory is still 79.7 MB. Free memory was 58.5 MB in the beginning and 56.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:41:16,601 INFO L168 Benchmark]: RCFGBuilder took 2180.15 ms. Allocated memory is still 79.7 MB. Free memory was 56.2 MB in the beginning and 36.8 MB in the end (delta: 19.4 MB). Peak memory consumption was 26.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:41:16,601 INFO L168 Benchmark]: TraceAbstraction took 599214.91 ms. Allocated memory was 79.7 MB in the beginning and 274.7 MB in the end (delta: 195.0 MB). Free memory was 36.5 MB in the beginning and 107.7 MB in the end (delta: -71.2 MB). Peak memory consumption was 122.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:41:16,601 INFO L168 Benchmark]: Witness Printer took 2.98 ms. Allocated memory is still 274.7 MB. Free memory is still 107.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:41:16,603 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 79.7 MB. Free memory was 60.9 MB in the beginning and 60.8 MB in the end (delta: 72.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 615.61 ms. Allocated memory is still 79.7 MB. Free memory was 44.2 MB in the beginning and 61.0 MB in the end (delta: -16.8 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 103.50 ms. Allocated memory is still 79.7 MB. Free memory was 61.0 MB in the beginning and 58.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 102.51 ms. Allocated memory is still 79.7 MB. Free memory was 58.5 MB in the beginning and 56.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2180.15 ms. Allocated memory is still 79.7 MB. Free memory was 56.2 MB in the beginning and 36.8 MB in the end (delta: 19.4 MB). Peak memory consumption was 26.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 599214.91 ms. Allocated memory was 79.7 MB in the beginning and 274.7 MB in the end (delta: 195.0 MB). Free memory was 36.5 MB in the beginning and 107.7 MB in the end (delta: -71.2 MB). Peak memory consumption was 122.5 MB. Max. memory is 16.1 GB. * Witness Printer took 2.98 ms. Allocated memory is still 274.7 MB. Free memory is still 107.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 35071.0ms, 190 PlacesBefore, 45 PlacesAfterwards, 195 TransitionsBefore, 38 TransitionsAfterwards, 1376 CoEnabledTransitionPairs, 7 FixpointIterations, 120 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 22 TrivialYvCompositions, 8 ConcurrentYvCompositions, 12 ChoiceCompositions, 185 TotalNumberOfCompositions, 3186 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2025, positive: 1909, positive conditional: 0, positive unconditional: 1909, negative: 116, negative conditional: 0, negative unconditional: 116, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 971, positive: 946, positive conditional: 0, positive unconditional: 946, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 971, positive: 943, positive conditional: 0, positive unconditional: 943, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 28, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 1036, positive: 115, positive conditional: 0, positive unconditional: 115, negative: 920, negative conditional: 0, negative unconditional: 920, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2025, positive: 963, positive conditional: 0, positive unconditional: 963, negative: 91, negative conditional: 0, negative unconditional: 91, unknown: 971, unknown conditional: 0, unknown unconditional: 971] , Statistics on independence cache: Total cache size (in pairs): 134, Positive cache size: 123, Positive conditional cache size: 0, Positive unconditional cache size: 123, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 130]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L41] 0 int *q1, *q2; [L42] 0 int q1_front, q1_back, q2_front, q2_back, i, j, n1, n2, N, C, total; [L104] 0 pthread_t t1, t2, t3, t4; [L106] 0 C = __VERIFIER_nondet_int() [L107] 0 N = __VERIFIER_nondet_int() [L108] 0 n1 = __VERIFIER_nondet_int() [L109] 0 n2 = __VERIFIER_nondet_int() [L110] 0 q1_front = __VERIFIER_nondet_int() [L111] 0 q1_back = q1_front [L112] 0 q2_front = __VERIFIER_nondet_int() [L113] 0 q2_back = q2_front [L38] COND FALSE 0 !(!cond) [L38] COND TRUE 0 !cond [L139] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L140] 0 int i = 0; [L140] COND TRUE 0 i < size [L141] 0 arr[i] = __VERIFIER_nondet_int() [L140] 0 i++ [L143] 0 return arr; [L114] 0 q1 = create_fresh_int_array(n1) [L38] COND FALSE 0 !(!cond) [L38] COND TRUE 0 !cond [L139] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L140] 0 int i = 0; [L140] COND TRUE 0 i < size [L141] 0 arr[i] = __VERIFIER_nondet_int() [L140] 0 i++ [L140] COND FALSE 0 !(i < size) [L143] 0 return arr; [L115] 0 q2 = create_fresh_int_array(n2) [L38] COND TRUE 0 !cond [L120] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) [L48] COND TRUE 1 i < N [L38] COND FALSE 1 !(!cond) [L51] 1 q1[q1_back] [L38] COND TRUE 1 !cond [L38] COND TRUE 1 !cond [L53] 1 q1_back++ [L56] 1 i++ [L60] 1 return 0; [L121] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) [L64] COND TRUE 2 j < N [L38] COND TRUE 2 !cond [L67] 2 q2[q2_back] [L38] COND TRUE 2 !cond [L38] COND TRUE 2 !cond [L69] 2 q2_back++ [L122] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) [L72] 2 j++ [L123] FCALL, FORK 0 pthread_create(&t4, 0, thread4, 0) [L92] COND TRUE 4 j < N || q2_front < q2_back [L38] COND TRUE 4 !cond [L95] EXPR 4 q2[q2_front] [L38] COND TRUE 4 !cond [L38] COND FALSE 4 !(!cond) [L149] 4 return a + b; [L95] 4 total = plus(total, q2[q2_front]) [L96] 4 q2_front++ [L100] 4 return 0; [L124] 0 \read(t1) [L64] COND FALSE 2 !(j < N) [L76] 2 return 0; [L80] COND TRUE 3 i < N || q1_front < q1_back [L38] COND TRUE 3 !cond [L83] EXPR 3 q1[q1_front] [L38] COND TRUE 3 !cond [L38] COND TRUE 3 !cond [L149] 3 return a + b; [L83] 3 total = plus(total, q1[q1_front]) [L84] 3 q1_front++ [L88] 3 return 0; [L124] FCALL, JOIN 1 pthread_join(t1, 0) [L125] 0 \read(t2) [L125] FCALL, JOIN 2 pthread_join(t2, 0) [L126] 0 \read(t3) [L126] FCALL, JOIN 3 pthread_join(t3, 0) [L127] 0 \read(t4) [L127] FCALL, JOIN 4 pthread_join(t4, 0) [L38] COND FALSE 0 !(!cond) [L130] 0 reach_error() - UnprovableResult [Line: 122]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 121]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 123]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 120]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 204 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 598879.3ms, OverallIterations: 11, TraceHistogramMax: 2, EmptinessCheckTime: 137.8ms, AutomataDifference: 45281.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 35180.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 501 SDtfs, 5488 SDslu, 3150 SDs, 0 SdLazy, 2699 SolverSat, 1080 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16505.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 915 GetRequests, 680 SyntacticMatches, 4 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11323 ImplicationChecksByTransitivity, 29653.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=3350occurred in iteration=10, InterpolantAutomatonStates: 225, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1445.2ms AutomataMinimizationTime, 10 MinimizatonAttempts, 12216 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 361.5ms SsaConstructionTime, 1723.2ms SatisfiabilityAnalysisTime, 11505.4ms InterpolantComputationTime, 394 NumberOfCodeBlocks, 392 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 760 ConstructedInterpolants, 8 QuantifiedInterpolants, 4052 SizeOfPredicates, 74 NumberOfNonLiveVariables, 2117 ConjunctsInSsa, 111 ConjunctsInUnsatCore, 28 InterpolantComputations, 16 PerfectInterpolantSequences, 63/96 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...