./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product37.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product37.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG --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 e3509f37a4190025a6bf9c4e7a81c42e49e3316a9582aab003e20039c8a6c594 ............................................................................................................................................ 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_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product37.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG --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 e3509f37a4190025a6bf9c4e7a81c42e49e3316a9582aab003e20039c8a6c594 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 04:55:41,557 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 04:55:41,561 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 04:55:41,611 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 04:55:41,612 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 04:55:41,618 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 04:55:41,620 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 04:55:41,624 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 04:55:41,626 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 04:55:41,634 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 04:55:41,635 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 04:55:41,637 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 04:55:41,638 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 04:55:41,640 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 04:55:41,643 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 04:55:41,648 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 04:55:41,650 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 04:55:41,651 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 04:55:41,654 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 04:55:41,661 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 04:55:41,663 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 04:55:41,664 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 04:55:41,668 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 04:55:41,669 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 04:55:41,675 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 04:55:41,675 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 04:55:41,676 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 04:55:41,678 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 04:55:41,678 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 04:55:41,680 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 04:55:41,681 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 04:55:41,682 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 04:55:41,684 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 04:55:41,685 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 04:55:41,687 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 04:55:41,687 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 04:55:41,688 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 04:55:41,688 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 04:55:41,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 04:55:41,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 04:55:41,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 04:55:41,691 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 04:55:41,744 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 04:55:41,745 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 04:55:41,746 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 04:55:41,746 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 04:55:41,747 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 04:55:41,747 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 04:55:41,747 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 04:55:41,747 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 04:55:41,753 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 04:55:41,754 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 04:55:41,755 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 04:55:41,755 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 04:55:41,755 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 04:55:41,755 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 04:55:41,756 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 04:55:41,757 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 04:55:41,757 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 04:55:41,757 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 04:55:41,758 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 04:55:41,758 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 04:55:41,758 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 04:55:41,758 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 04:55:41,759 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 04:55:41,759 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 04:55:41,759 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 04:55:41,759 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 04:55:41,760 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 04:55:41,760 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 04:55:41,760 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 04:55:41,762 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 04:55:41,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:55:41,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 04:55:41,763 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 04:55:41,763 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 04:55:41,763 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 04:55:41,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 04:55:41,764 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 04:55:41,764 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 04:55:41,764 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 04:55:41,764 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_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3509f37a4190025a6bf9c4e7a81c42e49e3316a9582aab003e20039c8a6c594 [2021-10-29 04:55:42,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 04:55:42,041 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 04:55:42,043 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 04:55:42,046 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 04:55:42,047 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 04:55:42,048 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/product-lines/minepump_spec4_product37.cil.c [2021-10-29 04:55:42,127 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/data/fc415548c/64fbc6810df94ab1a706e90d8ffb9af1/FLAG319f1b98d [2021-10-29 04:55:42,700 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 04:55:42,701 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/sv-benchmarks/c/product-lines/minepump_spec4_product37.cil.c [2021-10-29 04:55:42,720 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/data/fc415548c/64fbc6810df94ab1a706e90d8ffb9af1/FLAG319f1b98d [2021-10-29 04:55:43,015 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/data/fc415548c/64fbc6810df94ab1a706e90d8ffb9af1 [2021-10-29 04:55:43,018 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 04:55:43,020 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 04:55:43,023 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 04:55:43,024 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 04:55:43,028 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 04:55:43,028 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:55:43" (1/1) ... [2021-10-29 04:55:43,031 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d751b9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:43, skipping insertion in model container [2021-10-29 04:55:43,031 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:55:43" (1/1) ... [2021-10-29 04:55:43,037 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 04:55:43,098 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 04:55:43,329 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_be324731-81fd-48fb-8a3f-1a7348727e04/sv-benchmarks/c/product-lines/minepump_spec4_product37.cil.c[6698,6711] [2021-10-29 04:55:43,391 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:55:43,401 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) [2021-10-29 04:55:43,402 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@334c7e2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:43, skipping insertion in model container [2021-10-29 04:55:43,402 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 04:55:43,403 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-29 04:55:43,405 INFO L168 Benchmark]: Toolchain (without parser) took 383.52 ms. Allocated memory is still 96.5 MB. Free memory was 62.7 MB in the beginning and 67.2 MB in the end (delta: -4.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 04:55:43,405 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 96.5 MB. Free memory is still 51.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:55:43,406 INFO L168 Benchmark]: CACSL2BoogieTranslator took 379.20 ms. Allocated memory is still 96.5 MB. Free memory was 62.5 MB in the beginning and 67.2 MB in the end (delta: -4.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-29 04:55:43,408 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 96.5 MB. Free memory is still 51.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 379.20 ms. Allocated memory is still 96.5 MB. Free memory was 62.5 MB in the beginning and 67.2 MB in the end (delta: -4.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 572]: 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-b2eff8b [2021-10-29 04:55:45,604 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 04:55:45,606 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 04:55:45,664 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 04:55:45,665 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 04:55:45,668 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 04:55:45,671 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 04:55:45,675 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 04:55:45,678 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 04:55:45,685 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 04:55:45,687 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 04:55:45,689 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 04:55:45,690 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 04:55:45,693 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 04:55:45,695 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 04:55:45,700 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 04:55:45,702 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 04:55:45,703 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 04:55:45,706 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 04:55:45,716 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 04:55:45,718 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 04:55:45,723 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 04:55:45,726 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 04:55:45,728 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 04:55:45,737 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 04:55:45,737 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 04:55:45,738 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 04:55:45,740 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 04:55:45,740 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 04:55:45,741 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 04:55:45,742 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 04:55:45,743 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 04:55:45,745 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 04:55:45,745 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 04:55:45,747 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 04:55:45,747 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 04:55:45,748 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 04:55:45,748 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 04:55:45,749 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 04:55:45,751 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 04:55:45,751 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 04:55:45,756 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-29 04:55:45,802 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 04:55:45,804 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 04:55:45,805 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 04:55:45,806 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 04:55:45,806 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 04:55:45,806 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 04:55:45,806 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 04:55:45,807 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 04:55:45,807 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 04:55:45,809 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 04:55:45,810 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 04:55:45,810 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 04:55:45,810 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 04:55:45,811 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 04:55:45,811 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 04:55:45,811 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 04:55:45,811 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 04:55:45,812 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-29 04:55:45,812 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-29 04:55:45,812 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 04:55:45,812 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 04:55:45,812 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 04:55:45,813 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 04:55:45,813 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 04:55:45,813 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 04:55:45,813 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 04:55:45,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:55:45,814 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 04:55:45,814 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 04:55:45,814 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 04:55:45,814 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-29 04:55:45,815 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-29 04:55:45,815 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 04:55:45,815 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 04:55:45,816 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 04:55:45,816 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_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3509f37a4190025a6bf9c4e7a81c42e49e3316a9582aab003e20039c8a6c594 [2021-10-29 04:55:46,191 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 04:55:46,214 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 04:55:46,217 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 04:55:46,219 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 04:55:46,219 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 04:55:46,222 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/product-lines/minepump_spec4_product37.cil.c [2021-10-29 04:55:46,306 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/data/7b011e8d6/ac84cbf7f76c4702adfeda6c09bae43e/FLAG301c0ee59 [2021-10-29 04:55:46,926 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 04:55:46,942 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/sv-benchmarks/c/product-lines/minepump_spec4_product37.cil.c [2021-10-29 04:55:46,958 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/data/7b011e8d6/ac84cbf7f76c4702adfeda6c09bae43e/FLAG301c0ee59 [2021-10-29 04:55:47,230 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/data/7b011e8d6/ac84cbf7f76c4702adfeda6c09bae43e [2021-10-29 04:55:47,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 04:55:47,234 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 04:55:47,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 04:55:47,236 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 04:55:47,241 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 04:55:47,242 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:55:47" (1/1) ... [2021-10-29 04:55:47,243 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fd56a08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:47, skipping insertion in model container [2021-10-29 04:55:47,243 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:55:47" (1/1) ... [2021-10-29 04:55:47,250 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 04:55:47,314 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 04:55:47,541 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_be324731-81fd-48fb-8a3f-1a7348727e04/sv-benchmarks/c/product-lines/minepump_spec4_product37.cil.c[6698,6711] [2021-10-29 04:55:47,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:55:47,648 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-29 04:55:47,656 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 04:55:47,679 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_be324731-81fd-48fb-8a3f-1a7348727e04/sv-benchmarks/c/product-lines/minepump_spec4_product37.cil.c[6698,6711] [2021-10-29 04:55:47,718 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:55:47,723 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 04:55:47,781 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_be324731-81fd-48fb-8a3f-1a7348727e04/sv-benchmarks/c/product-lines/minepump_spec4_product37.cil.c[6698,6711] [2021-10-29 04:55:47,838 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:55:47,870 INFO L208 MainTranslator]: Completed translation [2021-10-29 04:55:47,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:47 WrapperNode [2021-10-29 04:55:47,871 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 04:55:47,872 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 04:55:47,872 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 04:55:47,872 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 04:55:47,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:47" (1/1) ... [2021-10-29 04:55:47,900 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:47" (1/1) ... [2021-10-29 04:55:47,949 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 04:55:47,950 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 04:55:47,950 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 04:55:47,950 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 04:55:47,958 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:47" (1/1) ... [2021-10-29 04:55:47,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:47" (1/1) ... [2021-10-29 04:55:47,964 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:47" (1/1) ... [2021-10-29 04:55:47,965 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:47" (1/1) ... [2021-10-29 04:55:47,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:47" (1/1) ... [2021-10-29 04:55:47,985 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:47" (1/1) ... [2021-10-29 04:55:47,988 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:47" (1/1) ... [2021-10-29 04:55:47,994 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 04:55:47,995 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 04:55:47,995 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 04:55:47,995 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 04:55:47,996 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:47" (1/1) ... [2021-10-29 04:55:48,006 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:55:48,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:55:48,043 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 04:55:48,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 04:55:48,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 04:55:48,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-29 04:55:48,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 04:55:48,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 04:55:50,310 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 04:55:50,310 INFO L299 CfgBuilder]: Removed 156 assume(true) statements. [2021-10-29 04:55:50,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:55:50 BoogieIcfgContainer [2021-10-29 04:55:50,312 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 04:55:50,314 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 04:55:50,314 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 04:55:50,317 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 04:55:50,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:55:47" (1/3) ... [2021-10-29 04:55:50,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64ab6b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:55:50, skipping insertion in model container [2021-10-29 04:55:50,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:47" (2/3) ... [2021-10-29 04:55:50,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64ab6b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:55:50, skipping insertion in model container [2021-10-29 04:55:50,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:55:50" (3/3) ... [2021-10-29 04:55:50,320 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product37.cil.c [2021-10-29 04:55:50,325 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 04:55:50,325 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-29 04:55:50,371 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 04:55:50,377 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 04:55:50,377 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-29 04:55:50,393 INFO L276 IsEmpty]: Start isEmpty. Operand has 111 states, 107 states have (on average 1.5700934579439252) internal successors, (168), 110 states have internal predecessors, (168), 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) [2021-10-29 04:55:50,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-29 04:55:50,399 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:55:50,400 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:55:50,400 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:55:50,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:55:50,406 INFO L85 PathProgramCache]: Analyzing trace with hash 2109695399, now seen corresponding path program 1 times [2021-10-29 04:55:50,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:55:50,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [190345354] [2021-10-29 04:55:50,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:55:50,426 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:55:50,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:55:50,428 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:55:50,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 04:55:50,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:55:50,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-29 04:55:50,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:55:50,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:55:50,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:55:50,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:55:50,836 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:55:50,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [190345354] [2021-10-29 04:55:50,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [190345354] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:55:50,837 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:55:50,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-29 04:55:50,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927459294] [2021-10-29 04:55:50,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 04:55:50,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:55:50,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 04:55:50,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 04:55:50,873 INFO L87 Difference]: Start difference. First operand has 111 states, 107 states have (on average 1.5700934579439252) internal successors, (168), 110 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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) [2021-10-29 04:55:50,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:55:50,899 INFO L93 Difference]: Finished difference Result 216 states and 329 transitions. [2021-10-29 04:55:50,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 04:55:50,901 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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 16 [2021-10-29 04:55:50,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:55:50,910 INFO L225 Difference]: With dead ends: 216 [2021-10-29 04:55:50,911 INFO L226 Difference]: Without dead ends: 107 [2021-10-29 04:55:50,913 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 04:55:50,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-10-29 04:55:50,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2021-10-29 04:55:50,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 104 states have (on average 1.5) internal successors, (156), 106 states have internal predecessors, (156), 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) [2021-10-29 04:55:50,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 156 transitions. [2021-10-29 04:55:50,954 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 156 transitions. Word has length 16 [2021-10-29 04:55:50,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:55:50,955 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 156 transitions. [2021-10-29 04:55:50,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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) [2021-10-29 04:55:50,955 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 156 transitions. [2021-10-29 04:55:50,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-29 04:55:50,957 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:55:50,957 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:55:50,978 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-29 04:55:51,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:55:51,174 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:55:51,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:55:51,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1093063509, now seen corresponding path program 1 times [2021-10-29 04:55:51,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:55:51,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [880903125] [2021-10-29 04:55:51,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:55:51,176 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:55:51,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:55:51,177 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:55:51,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-29 04:55:51,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:55:51,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 04:55:51,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:55:51,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:55:51,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:55:51,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:55:51,504 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:55:51,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [880903125] [2021-10-29 04:55:51,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [880903125] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:55:51,505 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:55:51,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-29 04:55:51,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356474497] [2021-10-29 04:55:51,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 04:55:51,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:55:51,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 04:55:51,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 04:55:51,512 INFO L87 Difference]: Start difference. First operand 107 states and 156 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:55:51,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:55:51,543 INFO L93 Difference]: Finished difference Result 107 states and 156 transitions. [2021-10-29 04:55:51,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 04:55:51,543 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-29 04:55:51,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:55:51,546 INFO L225 Difference]: With dead ends: 107 [2021-10-29 04:55:51,547 INFO L226 Difference]: Without dead ends: 45 [2021-10-29 04:55:51,548 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 04:55:51,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-10-29 04:55:51,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-10-29 04:55:51,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.4772727272727273) internal successors, (65), 44 states have internal predecessors, (65), 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) [2021-10-29 04:55:51,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 65 transitions. [2021-10-29 04:55:51,561 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 65 transitions. Word has length 17 [2021-10-29 04:55:51,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:55:51,562 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 65 transitions. [2021-10-29 04:55:51,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:55:51,562 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 65 transitions. [2021-10-29 04:55:51,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-29 04:55:51,564 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:55:51,567 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:55:51,582 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-29 04:55:51,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:55:51,782 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:55:51,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:55:51,783 INFO L85 PathProgramCache]: Analyzing trace with hash -720159228, now seen corresponding path program 1 times [2021-10-29 04:55:51,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:55:51,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [230538991] [2021-10-29 04:55:51,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:55:51,784 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:55:51,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:55:51,786 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:55:51,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-29 04:55:51,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:55:51,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 04:55:51,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:55:52,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:55:52,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:55:52,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:55:52,147 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:55:52,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [230538991] [2021-10-29 04:55:52,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [230538991] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:55:52,147 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:55:52,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-29 04:55:52,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787261659] [2021-10-29 04:55:52,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 04:55:52,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:55:52,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 04:55:52,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 04:55:52,149 INFO L87 Difference]: Start difference. First operand 45 states and 65 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) [2021-10-29 04:55:52,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:55:52,158 INFO L93 Difference]: Finished difference Result 84 states and 124 transitions. [2021-10-29 04:55:52,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 04:55:52,159 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 22 [2021-10-29 04:55:52,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:55:52,159 INFO L225 Difference]: With dead ends: 84 [2021-10-29 04:55:52,160 INFO L226 Difference]: Without dead ends: 45 [2021-10-29 04:55:52,160 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 04:55:52,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-10-29 04:55:52,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-10-29 04:55:52,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.4545454545454546) internal successors, (64), 44 states have internal predecessors, (64), 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) [2021-10-29 04:55:52,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 64 transitions. [2021-10-29 04:55:52,165 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 64 transitions. Word has length 22 [2021-10-29 04:55:52,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:55:52,166 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 64 transitions. [2021-10-29 04:55:52,166 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) [2021-10-29 04:55:52,166 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 64 transitions. [2021-10-29 04:55:52,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-29 04:55:52,167 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:55:52,167 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:55:52,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-29 04:55:52,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:55:52,380 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:55:52,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:55:52,380 INFO L85 PathProgramCache]: Analyzing trace with hash 2091202829, now seen corresponding path program 1 times [2021-10-29 04:55:52,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:55:52,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [119527041] [2021-10-29 04:55:52,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:55:52,381 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:55:52,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:55:52,382 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:55:52,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-29 04:55:52,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:55:52,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 04:55:52,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:55:52,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:55:52,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:55:52,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:55:52,759 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:55:52,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [119527041] [2021-10-29 04:55:52,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [119527041] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:55:52,760 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:55:52,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-29 04:55:52,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820105896] [2021-10-29 04:55:52,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 04:55:52,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:55:52,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 04:55:52,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:55:52,762 INFO L87 Difference]: Start difference. First operand 45 states and 64 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-10-29 04:55:52,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:55:52,826 INFO L93 Difference]: Finished difference Result 105 states and 152 transitions. [2021-10-29 04:55:52,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 04:55:52,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-29 04:55:52,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:55:52,828 INFO L225 Difference]: With dead ends: 105 [2021-10-29 04:55:52,828 INFO L226 Difference]: Without dead ends: 66 [2021-10-29 04:55:52,828 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:55:52,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-29 04:55:52,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2021-10-29 04:55:52,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.4285714285714286) internal successors, (90), 63 states have internal predecessors, (90), 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) [2021-10-29 04:55:52,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 90 transitions. [2021-10-29 04:55:52,836 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 90 transitions. Word has length 24 [2021-10-29 04:55:52,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:55:52,837 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 90 transitions. [2021-10-29 04:55:52,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-10-29 04:55:52,837 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 90 transitions. [2021-10-29 04:55:52,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-29 04:55:52,838 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:55:52,839 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:55:52,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-29 04:55:53,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:55:53,051 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:55:53,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:55:53,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1013899842, now seen corresponding path program 1 times [2021-10-29 04:55:53,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:55:53,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1025983917] [2021-10-29 04:55:53,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:55:53,053 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:55:53,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:55:53,054 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:55:53,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-29 04:55:53,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:55:53,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 04:55:53,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:55:53,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:55:53,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:55:53,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:55:53,501 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:55:53,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1025983917] [2021-10-29 04:55:53,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1025983917] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:55:53,505 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:55:53,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-29 04:55:53,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519639607] [2021-10-29 04:55:53,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 04:55:53,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:55:53,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 04:55:53,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 04:55:53,507 INFO L87 Difference]: Start difference. First operand 64 states and 90 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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) [2021-10-29 04:55:53,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:55:53,592 INFO L93 Difference]: Finished difference Result 171 states and 239 transitions. [2021-10-29 04:55:53,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 04:55:53,592 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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 [2021-10-29 04:55:53,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:55:53,594 INFO L225 Difference]: With dead ends: 171 [2021-10-29 04:55:53,594 INFO L226 Difference]: Without dead ends: 113 [2021-10-29 04:55:53,595 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-29 04:55:53,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-10-29 04:55:53,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 70. [2021-10-29 04:55:53,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.391304347826087) internal successors, (96), 69 states have internal predecessors, (96), 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) [2021-10-29 04:55:53,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 96 transitions. [2021-10-29 04:55:53,605 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 96 transitions. Word has length 30 [2021-10-29 04:55:53,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:55:53,606 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 96 transitions. [2021-10-29 04:55:53,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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) [2021-10-29 04:55:53,606 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 96 transitions. [2021-10-29 04:55:53,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-29 04:55:53,607 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:55:53,607 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:55:53,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-29 04:55:53,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:55:53,825 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:55:53,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:55:53,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1648611201, now seen corresponding path program 1 times [2021-10-29 04:55:53,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:55:53,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [24691997] [2021-10-29 04:55:53,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:55:53,827 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:55:53,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:55:53,828 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:55:53,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-29 04:55:54,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:55:54,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 04:55:54,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:55:54,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:55:54,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:55:54,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:55:54,332 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:55:54,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [24691997] [2021-10-29 04:55:54,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [24691997] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:55:54,333 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:55:54,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-29 04:55:54,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558026919] [2021-10-29 04:55:54,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 04:55:54,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:55:54,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 04:55:54,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-29 04:55:54,335 INFO L87 Difference]: Start difference. First operand 70 states and 96 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 7 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) [2021-10-29 04:55:54,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:55:54,634 INFO L93 Difference]: Finished difference Result 518 states and 731 transitions. [2021-10-29 04:55:54,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-29 04:55:54,635 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 7 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 30 [2021-10-29 04:55:54,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:55:54,638 INFO L225 Difference]: With dead ends: 518 [2021-10-29 04:55:54,638 INFO L226 Difference]: Without dead ends: 454 [2021-10-29 04:55:54,640 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2021-10-29 04:55:54,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2021-10-29 04:55:54,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 169. [2021-10-29 04:55:54,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 1.3630952380952381) internal successors, (229), 168 states have internal predecessors, (229), 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) [2021-10-29 04:55:54,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 229 transitions. [2021-10-29 04:55:54,675 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 229 transitions. Word has length 30 [2021-10-29 04:55:54,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:55:54,676 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 229 transitions. [2021-10-29 04:55:54,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 7 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) [2021-10-29 04:55:54,676 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 229 transitions. [2021-10-29 04:55:54,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-10-29 04:55:54,679 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:55:54,679 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-29 04:55:54,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-29 04:55:54,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:55:54,892 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:55:54,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:55:54,893 INFO L85 PathProgramCache]: Analyzing trace with hash 2043138488, now seen corresponding path program 1 times [2021-10-29 04:55:54,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:55:54,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1956584266] [2021-10-29 04:55:54,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:55:54,894 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:55:54,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:55:54,895 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:55:54,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-29 04:55:55,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:55:55,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-29 04:55:55,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:55:55,306 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-29 04:55:55,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:55:55,455 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-29 04:55:55,455 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:55:55,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1956584266] [2021-10-29 04:55:55,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1956584266] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:55:55,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:55:55,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-29 04:55:55,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638293875] [2021-10-29 04:55:55,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 04:55:55,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:55:55,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 04:55:55,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-29 04:55:55,458 INFO L87 Difference]: Start difference. First operand 169 states and 229 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2021-10-29 04:55:55,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:55:55,536 INFO L93 Difference]: Finished difference Result 399 states and 539 transitions. [2021-10-29 04:55:55,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 04:55:55,537 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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 48 [2021-10-29 04:55:55,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:55:55,538 INFO L225 Difference]: With dead ends: 399 [2021-10-29 04:55:55,539 INFO L226 Difference]: Without dead ends: 236 [2021-10-29 04:55:55,540 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-29 04:55:55,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-10-29 04:55:55,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 148. [2021-10-29 04:55:55,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.3333333333333333) internal successors, (196), 147 states have internal predecessors, (196), 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) [2021-10-29 04:55:55,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 196 transitions. [2021-10-29 04:55:55,557 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 196 transitions. Word has length 48 [2021-10-29 04:55:55,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:55:55,557 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 196 transitions. [2021-10-29 04:55:55,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2021-10-29 04:55:55,558 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 196 transitions. [2021-10-29 04:55:55,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-10-29 04:55:55,560 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:55:55,560 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1] [2021-10-29 04:55:55,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-29 04:55:55,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:55:55,775 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:55:55,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:55:55,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1197109900, now seen corresponding path program 1 times [2021-10-29 04:55:55,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:55:55,776 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [116893604] [2021-10-29 04:55:55,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:55:55,777 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:55:55,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:55:55,778 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:55:55,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-29 04:55:56,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:55:56,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-29 04:55:56,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:55:56,250 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-29 04:55:56,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:55:56,430 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-29 04:55:56,431 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:55:56,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [116893604] [2021-10-29 04:55:56,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [116893604] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:55:56,431 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:55:56,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-29 04:55:56,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160649245] [2021-10-29 04:55:56,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 04:55:56,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:55:56,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 04:55:56,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-29 04:55:56,434 INFO L87 Difference]: Start difference. First operand 148 states and 196 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 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) [2021-10-29 04:55:56,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:55:56,605 INFO L93 Difference]: Finished difference Result 766 states and 1050 transitions. [2021-10-29 04:55:56,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-29 04:55:56,605 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 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 49 [2021-10-29 04:55:56,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:55:56,610 INFO L225 Difference]: With dead ends: 766 [2021-10-29 04:55:56,610 INFO L226 Difference]: Without dead ends: 624 [2021-10-29 04:55:56,612 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-10-29 04:55:56,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2021-10-29 04:55:56,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 288. [2021-10-29 04:55:56,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 287 states have (on average 1.3170731707317074) internal successors, (378), 287 states have internal predecessors, (378), 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) [2021-10-29 04:55:56,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 378 transitions. [2021-10-29 04:55:56,672 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 378 transitions. Word has length 49 [2021-10-29 04:55:56,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:55:56,673 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 378 transitions. [2021-10-29 04:55:56,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 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) [2021-10-29 04:55:56,674 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 378 transitions. [2021-10-29 04:55:56,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-29 04:55:56,679 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:55:56,680 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2021-10-29 04:55:56,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-29 04:55:56,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:55:56,893 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:55:56,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:55:56,893 INFO L85 PathProgramCache]: Analyzing trace with hash 2022214963, now seen corresponding path program 1 times [2021-10-29 04:55:56,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:55:56,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [252675672] [2021-10-29 04:55:56,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:55:56,894 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:55:56,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:55:56,895 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:55:56,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-29 04:55:57,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:55:57,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-29 04:55:57,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:55:57,360 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-29 04:55:57,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:55:57,568 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-29 04:55:57,569 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:55:57,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [252675672] [2021-10-29 04:55:57,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [252675672] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:55:57,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1683612715] [2021-10-29 04:55:57,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:55:57,570 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-29 04:55:57,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/cvc4 [2021-10-29 04:55:57,574 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-29 04:55:57,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-10-29 04:55:57,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:55:57,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-29 04:55:57,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:55:58,066 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-29 04:55:58,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:55:58,240 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-29 04:55:58,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1683612715] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:55:58,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124429040] [2021-10-29 04:55:58,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:55:58,241 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:55:58,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:55:58,246 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:55:58,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-29 04:55:58,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:55:58,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-29 04:55:58,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:55:58,742 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-29 04:55:58,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:55:58,893 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-29 04:55:58,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124429040] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:55:58,894 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-29 04:55:58,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 9 [2021-10-29 04:55:58,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427779958] [2021-10-29 04:55:58,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-29 04:55:58,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:55:58,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-29 04:55:58,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-29 04:55:58,896 INFO L87 Difference]: Start difference. First operand 288 states and 378 transitions. Second operand has 10 states, 10 states have (on average 8.9) internal successors, (89), 9 states have internal predecessors, (89), 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) [2021-10-29 04:56:02,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:56:02,216 INFO L93 Difference]: Finished difference Result 1895 states and 2527 transitions. [2021-10-29 04:56:02,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-29 04:56:02,216 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 9 states have internal predecessors, (89), 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 50 [2021-10-29 04:56:02,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:56:02,226 INFO L225 Difference]: With dead ends: 1895 [2021-10-29 04:56:02,226 INFO L226 Difference]: Without dead ends: 1661 [2021-10-29 04:56:02,227 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2021-10-29 04:56:02,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1661 states. [2021-10-29 04:56:02,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1661 to 520. [2021-10-29 04:56:02,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 519 states have (on average 1.3333333333333333) internal successors, (692), 519 states have internal predecessors, (692), 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) [2021-10-29 04:56:02,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 692 transitions. [2021-10-29 04:56:02,309 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 692 transitions. Word has length 50 [2021-10-29 04:56:02,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:56:02,309 INFO L470 AbstractCegarLoop]: Abstraction has 520 states and 692 transitions. [2021-10-29 04:56:02,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 9 states have internal predecessors, (89), 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) [2021-10-29 04:56:02,310 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 692 transitions. [2021-10-29 04:56:02,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-10-29 04:56:02,311 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:56:02,311 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:56:02,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-10-29 04:56:02,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-29 04:56:02,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-29 04:56:02,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:56:02,914 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:56:02,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:56:02,914 INFO L85 PathProgramCache]: Analyzing trace with hash 866267864, now seen corresponding path program 2 times [2021-10-29 04:56:02,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:56:02,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1289570029] [2021-10-29 04:56:02,915 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-29 04:56:02,915 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:56:02,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:56:02,916 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:56:02,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-29 04:56:04,415 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-29 04:56:04,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-10-29 04:56:04,415 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 04:56:05,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 04:56:06,000 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-29 04:56:06,000 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 04:56:06,001 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:56:06,003 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:56:06,003 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:56:06,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-29 04:56:06,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:56:06,225 INFO L731 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:56:06,229 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 04:56:06,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 04:56:06 BoogieIcfgContainer [2021-10-29 04:56:06,470 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 04:56:06,470 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 04:56:06,471 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 04:56:06,471 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 04:56:06,471 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:55:50" (3/4) ... [2021-10-29 04:56:06,473 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-29 04:56:06,610 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 04:56:06,610 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 04:56:06,611 INFO L168 Benchmark]: Toolchain (without parser) took 19376.33 ms. Allocated memory was 65.0 MB in the beginning and 107.0 MB in the end (delta: 41.9 MB). Free memory was 43.1 MB in the beginning and 43.9 MB in the end (delta: -804.0 kB). Peak memory consumption was 40.7 MB. Max. memory is 16.1 GB. [2021-10-29 04:56:06,612 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 65.0 MB. Free memory is still 44.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:56:06,612 INFO L168 Benchmark]: CACSL2BoogieTranslator took 635.52 ms. Allocated memory is still 65.0 MB. Free memory was 42.9 MB in the beginning and 32.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 04:56:06,613 INFO L168 Benchmark]: Boogie Procedure Inliner took 77.13 ms. Allocated memory is still 65.0 MB. Free memory was 32.1 MB in the beginning and 46.0 MB in the end (delta: -13.9 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2021-10-29 04:56:06,613 INFO L168 Benchmark]: Boogie Preprocessor took 44.59 ms. Allocated memory is still 65.0 MB. Free memory was 46.0 MB in the beginning and 43.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:56:06,613 INFO L168 Benchmark]: RCFGBuilder took 2317.69 ms. Allocated memory was 65.0 MB in the beginning and 83.9 MB in the end (delta: 18.9 MB). Free memory was 43.4 MB in the beginning and 53.9 MB in the end (delta: -10.6 MB). Peak memory consumption was 32.3 MB. Max. memory is 16.1 GB. [2021-10-29 04:56:06,614 INFO L168 Benchmark]: TraceAbstraction took 16155.76 ms. Allocated memory was 83.9 MB in the beginning and 107.0 MB in the end (delta: 23.1 MB). Free memory was 53.4 MB in the beginning and 71.2 MB in the end (delta: -17.8 MB). Peak memory consumption was 54.2 MB. Max. memory is 16.1 GB. [2021-10-29 04:56:06,614 INFO L168 Benchmark]: Witness Printer took 139.55 ms. Allocated memory is still 107.0 MB. Free memory was 71.2 MB in the beginning and 43.9 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2021-10-29 04:56:06,616 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 65.0 MB. Free memory is still 44.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 635.52 ms. Allocated memory is still 65.0 MB. Free memory was 42.9 MB in the beginning and 32.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 77.13 ms. Allocated memory is still 65.0 MB. Free memory was 32.1 MB in the beginning and 46.0 MB in the end (delta: -13.9 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.59 ms. Allocated memory is still 65.0 MB. Free memory was 46.0 MB in the beginning and 43.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2317.69 ms. Allocated memory was 65.0 MB in the beginning and 83.9 MB in the end (delta: 18.9 MB). Free memory was 43.4 MB in the beginning and 53.9 MB in the end (delta: -10.6 MB). Peak memory consumption was 32.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 16155.76 ms. Allocated memory was 83.9 MB in the beginning and 107.0 MB in the end (delta: 23.1 MB). Free memory was 53.4 MB in the beginning and 71.2 MB in the end (delta: -17.8 MB). Peak memory consumption was 54.2 MB. Max. memory is 16.1 GB. * Witness Printer took 139.55 ms. Allocated memory is still 107.0 MB. Free memory was 71.2 MB in the beginning and 43.9 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 444]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L165] int pumpRunning = 0; [L166] int systemActive = 1; [L344] int cleanupTimeShifts = 4; [L450] int waterLevel = 1; [L451] int methaneLevelCritical = 0; [L713] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L417] int retValue_acc ; [L418] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L79] int retValue_acc ; [L82] retValue_acc = 1 [L83] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L424] tmp = valid_product() [L426] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L93] int splverifierCounter ; [L94] int tmp ; [L95] int tmp___0 ; [L96] int tmp___1 ; [L97] int tmp___2 ; [L100] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L102] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L104] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L110] tmp = __VERIFIER_nondet_int() [L112] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L468] COND TRUE waterLevel < 2 [L469] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L120] tmp___0 = __VERIFIER_nondet_int() [L122] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L130] tmp___2 = __VERIFIER_nondet_int() [L132] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L173] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L180] COND TRUE \read(systemActive) [L228] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L231] COND FALSE !(\read(pumpRunning)) [L202] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L205] COND TRUE ! pumpRunning [L325] int retValue_acc ; [L326] int tmp ; [L327] int tmp___0 ; [L530] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L533] COND FALSE !(waterLevel < 2) [L537] retValue_acc = 0 [L538] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L331] tmp = isHighWaterSensorDry() [L333] COND FALSE !(\read(tmp)) [L336] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L338] retValue_acc = tmp___0 [L339] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L207] tmp = isHighWaterLevel() [L209] COND TRUE \read(tmp) [L256] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L911] int tmp ; [L912] int tmp___0 ; [L521] int retValue_acc ; [L524] retValue_acc = waterLevel [L525] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L916] tmp = getWaterLevel() [L918] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L102] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L104] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L110] tmp = __VERIFIER_nondet_int() [L112] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L120] tmp___0 = __VERIFIER_nondet_int() [L122] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L130] tmp___2 = __VERIFIER_nondet_int() [L132] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L173] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L456] COND TRUE waterLevel > 0 [L457] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L180] COND TRUE \read(systemActive) [L228] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L231] COND TRUE \read(pumpRunning) [L269] int retValue_acc ; [L489] int retValue_acc ; [L492] retValue_acc = methaneLevelCritical [L493] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L273] retValue_acc = isMethaneLevelCritical() [L275] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L233] tmp = isMethaneAlarm() [L235] COND FALSE !(\read(tmp)) [L202] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L205] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L911] int tmp ; [L912] int tmp___0 ; [L521] int retValue_acc ; [L524] retValue_acc = waterLevel [L525] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L916] tmp = getWaterLevel() [L918] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L102] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L104] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L110] tmp = __VERIFIER_nondet_int() [L112] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L120] tmp___0 = __VERIFIER_nondet_int() [L122] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L130] tmp___2 = __VERIFIER_nondet_int() [L132] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L173] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L456] COND TRUE waterLevel > 0 [L457] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L180] COND TRUE \read(systemActive) [L228] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L231] COND TRUE \read(pumpRunning) [L269] int retValue_acc ; [L489] int retValue_acc ; [L492] retValue_acc = methaneLevelCritical [L493] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L273] retValue_acc = isMethaneLevelCritical() [L275] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L233] tmp = isMethaneAlarm() [L235] COND FALSE !(\read(tmp)) [L202] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L205] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L911] int tmp ; [L912] int tmp___0 ; [L521] int retValue_acc ; [L524] retValue_acc = waterLevel [L525] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L916] tmp = getWaterLevel() [L918] COND TRUE tmp == 0 [L280] int retValue_acc ; [L283] retValue_acc = pumpRunning [L284] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L920] tmp___0 = isPumpRunning() [L922] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L444] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - UnprovableResult [Line: 444]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 444]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 111 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 15.8s, OverallIterations: 10, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 901 SDtfs, 2238 SDslu, 2250 SDs, 0 SdLazy, 417 SolverSat, 108 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 788 GetRequests, 723 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=520occurred in iteration=9, InterpolantAutomatonStates: 70, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 1895 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.4s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 455 NumberOfCodeBlocks, 455 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 750 ConstructedInterpolants, 0 QuantifiedInterpolants, 1855 SizeOfPredicates, 23 NumberOfNonLiveVariables, 2365 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 22 InterpolantComputations, 16 PerfectInterpolantSequences, 86/140 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 proved your program to be incorrect! [2021-10-29 04:56:06,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be324731-81fd-48fb-8a3f-1a7348727e04/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...