./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product21.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product21.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5c2801af81eeb5fcd439b1a1907444cd22ba07dc03ae6cb195ad73614e32dad5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:55:34,593 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:55:34,596 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:55:34,671 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:55:34,672 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:55:34,680 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:55:34,682 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:55:34,684 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:55:34,686 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:55:34,687 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:55:34,688 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:55:34,690 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:55:34,691 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:55:34,692 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:55:34,694 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:55:34,696 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:55:34,697 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:55:34,698 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:55:34,701 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:55:34,704 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:55:34,706 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:55:34,708 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:55:34,710 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:55:34,711 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:55:34,716 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:55:34,716 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:55:34,717 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:55:34,718 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:55:34,719 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:55:34,720 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:55:34,721 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:55:34,722 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:55:34,723 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:55:34,724 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:55:34,726 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:55:34,726 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:55:34,727 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:55:34,728 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:55:34,728 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:55:34,730 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:55:34,730 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:55:34,731 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:55:34,761 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:55:34,762 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:55:34,763 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:55:34,763 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:55:34,763 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:55:34,763 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:55:34,764 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:55:34,764 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:55:34,764 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:55:34,764 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:55:34,765 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:55:34,765 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:55:34,765 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:55:34,765 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:55:34,766 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:55:34,767 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:55:34,767 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:55:34,767 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:55:34,767 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:55:34,768 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:55:34,768 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:55:34,768 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:55:34,768 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:55:34,769 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:55:34,769 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:55:34,769 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:55:34,769 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:55:34,770 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:55:34,770 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:55:34,770 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:55:34,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:55:34,771 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:55:34,771 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:55:34,771 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:55:34,771 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:55:34,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:55:34,772 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:55:34,772 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:55:34,772 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:55:34,773 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_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c2801af81eeb5fcd439b1a1907444cd22ba07dc03ae6cb195ad73614e32dad5 [2021-11-07 01:55:35,114 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:55:35,158 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:55:35,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:55:35,163 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:55:35,164 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:55:35,165 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/elevator_spec3_product21.cil.c [2021-11-07 01:55:35,285 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/data/74ebe315e/fa3daa87acba43d895676db991b8c730/FLAGdf79365e3 [2021-11-07 01:55:36,000 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:55:36,002 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/sv-benchmarks/c/product-lines/elevator_spec3_product21.cil.c [2021-11-07 01:55:36,039 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/data/74ebe315e/fa3daa87acba43d895676db991b8c730/FLAGdf79365e3 [2021-11-07 01:55:36,147 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/data/74ebe315e/fa3daa87acba43d895676db991b8c730 [2021-11-07 01:55:36,150 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:55:36,151 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:55:36,153 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:55:36,154 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:55:36,157 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:55:36,158 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:55:36" (1/1) ... [2021-11-07 01:55:36,160 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fc0cd2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:55:36, skipping insertion in model container [2021-11-07 01:55:36,160 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:55:36" (1/1) ... [2021-11-07 01:55:36,167 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:55:36,265 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:55:36,979 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_d53d0729-5af1-4d0f-aae8-ac899671f306/sv-benchmarks/c/product-lines/elevator_spec3_product21.cil.c[62420,62433] [2021-11-07 01:55:37,044 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:55:37,057 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 01:55:37,058 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@279297d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:55:37, skipping insertion in model container [2021-11-07 01:55:37,058 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:55:37,059 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:55:37,062 INFO L168 Benchmark]: Toolchain (without parser) took 908.56 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 52.5 MB in the beginning and 70.7 MB in the end (delta: -18.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:55:37,063 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 90.2 MB. Free memory was 61.5 MB in the beginning and 61.5 MB in the end (delta: 27.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:55:37,064 INFO L168 Benchmark]: CACSL2BoogieTranslator took 905.50 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 52.2 MB in the beginning and 70.7 MB in the end (delta: -18.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:55:37,066 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 90.2 MB. Free memory was 61.5 MB in the beginning and 61.5 MB in the end (delta: 27.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 905.50 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 52.2 MB in the beginning and 70.7 MB in the end (delta: -18.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 3042]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product21.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5c2801af81eeb5fcd439b1a1907444cd22ba07dc03ae6cb195ad73614e32dad5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:55:39,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:55:39,539 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:55:39,609 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:55:39,610 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:55:39,615 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:55:39,617 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:55:39,623 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:55:39,627 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:55:39,637 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:55:39,640 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:55:39,642 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:55:39,643 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:55:39,646 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:55:39,649 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:55:39,654 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:55:39,656 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:55:39,658 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:55:39,660 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:55:39,673 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:55:39,676 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:55:39,682 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:55:39,685 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:55:39,688 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:55:39,698 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:55:39,699 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:55:39,699 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:55:39,701 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:55:39,702 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:55:39,703 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:55:39,704 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:55:39,705 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:55:39,707 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:55:39,708 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:55:39,710 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:55:39,727 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:55:39,728 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:55:39,728 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:55:39,728 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:55:39,730 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:55:39,731 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:55:39,737 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:55:39,789 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:55:39,790 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:55:39,791 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:55:39,792 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:55:39,792 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:55:39,792 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:55:39,792 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:55:39,793 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:55:39,793 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:55:39,795 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:55:39,796 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:55:39,796 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:55:39,796 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:55:39,797 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:55:39,797 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:55:39,797 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:55:39,797 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:55:39,797 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:55:39,798 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:55:39,798 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:55:39,798 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:55:39,798 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:55:39,799 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:55:39,799 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:55:39,799 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:55:39,799 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:55:39,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:55:39,800 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:55:39,800 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:55:39,800 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:55:39,801 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:55:39,801 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:55:39,801 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:55:39,801 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:55:39,802 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:55:39,802 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_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c2801af81eeb5fcd439b1a1907444cd22ba07dc03ae6cb195ad73614e32dad5 [2021-11-07 01:55:40,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:55:40,303 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:55:40,306 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:55:40,308 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:55:40,309 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:55:40,310 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/elevator_spec3_product21.cil.c [2021-11-07 01:55:40,394 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/data/e552d3561/eb8e4dd46e5d478f9fc11aa98a4d43c7/FLAGf82b724dd [2021-11-07 01:55:41,209 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:55:41,219 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/sv-benchmarks/c/product-lines/elevator_spec3_product21.cil.c [2021-11-07 01:55:41,259 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/data/e552d3561/eb8e4dd46e5d478f9fc11aa98a4d43c7/FLAGf82b724dd [2021-11-07 01:55:41,339 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/data/e552d3561/eb8e4dd46e5d478f9fc11aa98a4d43c7 [2021-11-07 01:55:41,342 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:55:41,345 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:55:41,349 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:55:41,349 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:55:41,353 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:55:41,354 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:55:41" (1/1) ... [2021-11-07 01:55:41,355 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30e009cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:55:41, skipping insertion in model container [2021-11-07 01:55:41,356 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:55:41" (1/1) ... [2021-11-07 01:55:41,365 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:55:41,445 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:55:42,079 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_d53d0729-5af1-4d0f-aae8-ac899671f306/sv-benchmarks/c/product-lines/elevator_spec3_product21.cil.c[62420,62433] [2021-11-07 01:55:42,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:55:42,141 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:55:42,166 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:55:42,330 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_d53d0729-5af1-4d0f-aae8-ac899671f306/sv-benchmarks/c/product-lines/elevator_spec3_product21.cil.c[62420,62433] [2021-11-07 01:55:42,350 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:55:42,370 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:55:42,519 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_d53d0729-5af1-4d0f-aae8-ac899671f306/sv-benchmarks/c/product-lines/elevator_spec3_product21.cil.c[62420,62433] [2021-11-07 01:55:42,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:55:42,569 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:55:42,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:55:42 WrapperNode [2021-11-07 01:55:42,570 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:55:42,571 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:55:42,571 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:55:42,572 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:55:42,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:55:42" (1/1) ... [2021-11-07 01:55:42,643 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:55:42" (1/1) ... [2021-11-07 01:55:43,319 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:55:43,320 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:55:43,320 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:55:43,320 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:55:43,335 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:55:42" (1/1) ... [2021-11-07 01:55:43,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:55:42" (1/1) ... [2021-11-07 01:55:43,531 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:55:42" (1/1) ... [2021-11-07 01:55:43,545 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:55:42" (1/1) ... [2021-11-07 01:55:43,818 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:55:42" (1/1) ... [2021-11-07 01:55:44,140 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:55:42" (1/1) ... [2021-11-07 01:55:44,217 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:55:42" (1/1) ... [2021-11-07 01:55:44,347 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:55:44,349 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:55:44,352 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:55:44,352 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:55:44,353 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:55:42" (1/1) ... [2021-11-07 01:55:44,366 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:55:44,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:55:44,407 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:55:44,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:55:44,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:55:44,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:55:44,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:55:44,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:56:08,335 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:56:08,336 INFO L299 CfgBuilder]: Removed 1897 assume(true) statements. [2021-11-07 01:56:08,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:56:08 BoogieIcfgContainer [2021-11-07 01:56:08,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:56:08,353 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:56:08,354 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:56:08,357 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:56:08,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:55:41" (1/3) ... [2021-11-07 01:56:08,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66dfb865 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:56:08, skipping insertion in model container [2021-11-07 01:56:08,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:55:42" (2/3) ... [2021-11-07 01:56:08,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66dfb865 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:56:08, skipping insertion in model container [2021-11-07 01:56:08,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:56:08" (3/3) ... [2021-11-07 01:56:08,362 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product21.cil.c [2021-11-07 01:56:08,369 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:56:08,369 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-07 01:56:08,475 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:56:08,483 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:56:08,484 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-07 01:56:08,710 INFO L276 IsEmpty]: Start isEmpty. Operand has 8708 states, 8697 states have (on average 1.8943313786363114) internal successors, (16475), 8707 states have internal predecessors, (16475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:56:08,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-07 01:56:08,740 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:56:08,741 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:56:08,742 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:56:08,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:56:08,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1830845599, now seen corresponding path program 1 times [2021-11-07 01:56:08,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:56:08,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [578254645] [2021-11-07 01:56:08,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:56:08,772 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:56:08,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:56:08,776 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:56:08,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:56:09,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:56:09,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:56:09,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:56:09,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:56:09,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:56:09,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:56:09,748 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:56:09,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [578254645] [2021-11-07 01:56:09,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [578254645] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:56:09,750 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:56:09,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:56:09,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560668586] [2021-11-07 01:56:09,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:56:09,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:56:09,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:56:09,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:56:09,832 INFO L87 Difference]: Start difference. First operand has 8708 states, 8697 states have (on average 1.8943313786363114) internal successors, (16475), 8707 states have internal predecessors, (16475), 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 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) [2021-11-07 01:56:14,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:56:14,120 INFO L93 Difference]: Finished difference Result 60578 states and 114606 transitions. [2021-11-07 01:56:14,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:56:14,122 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 46 [2021-11-07 01:56:14,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:56:14,542 INFO L225 Difference]: With dead ends: 60578 [2021-11-07 01:56:14,542 INFO L226 Difference]: Without dead ends: 51871 [2021-11-07 01:56:14,589 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:56:14,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51871 states. [2021-11-07 01:56:15,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51871 to 8720. [2021-11-07 01:56:15,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8720 states, 8710 states have (on average 1.8911595866819748) internal successors, (16472), 8719 states have internal predecessors, (16472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:56:15,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8720 states to 8720 states and 16472 transitions. [2021-11-07 01:56:15,739 INFO L78 Accepts]: Start accepts. Automaton has 8720 states and 16472 transitions. Word has length 46 [2021-11-07 01:56:15,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:56:15,740 INFO L470 AbstractCegarLoop]: Abstraction has 8720 states and 16472 transitions. [2021-11-07 01:56:15,740 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) [2021-11-07 01:56:15,741 INFO L276 IsEmpty]: Start isEmpty. Operand 8720 states and 16472 transitions. [2021-11-07 01:56:15,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-07 01:56:15,745 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:56:15,746 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:56:15,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:56:15,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:56:15,966 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:56:15,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:56:15,968 INFO L85 PathProgramCache]: Analyzing trace with hash -916149833, now seen corresponding path program 1 times [2021-11-07 01:56:15,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:56:15,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1732299858] [2021-11-07 01:56:15,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:56:15,970 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:56:15,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:56:15,971 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:56:15,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:56:16,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:56:16,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:56:16,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:56:16,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:56:16,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:56:16,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:56:16,891 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:56:16,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1732299858] [2021-11-07 01:56:16,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1732299858] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:56:16,893 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:56:16,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:56:16,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007947661] [2021-11-07 01:56:16,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:56:16,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:56:16,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:56:16,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:56:16,904 INFO L87 Difference]: Start difference. First operand 8720 states and 16472 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:56:17,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:56:17,229 INFO L93 Difference]: Finished difference Result 17352 states and 32787 transitions. [2021-11-07 01:56:17,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:56:17,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-07 01:56:17,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:56:17,277 INFO L225 Difference]: With dead ends: 17352 [2021-11-07 01:56:17,278 INFO L226 Difference]: Without dead ends: 8646 [2021-11-07 01:56:17,294 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:56:17,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8646 states. [2021-11-07 01:56:17,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8646 to 8646. [2021-11-07 01:56:17,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8646 states, 8636 states have (on average 1.890690134321445) internal successors, (16328), 8645 states have internal predecessors, (16328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:56:17,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8646 states to 8646 states and 16328 transitions. [2021-11-07 01:56:17,765 INFO L78 Accepts]: Start accepts. Automaton has 8646 states and 16328 transitions. Word has length 48 [2021-11-07 01:56:17,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:56:17,766 INFO L470 AbstractCegarLoop]: Abstraction has 8646 states and 16328 transitions. [2021-11-07 01:56:17,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:56:17,767 INFO L276 IsEmpty]: Start isEmpty. Operand 8646 states and 16328 transitions. [2021-11-07 01:56:17,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-07 01:56:17,772 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:56:17,772 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:56:17,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:56:17,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:56:17,991 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:56:17,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:56:17,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1351060519, now seen corresponding path program 1 times [2021-11-07 01:56:17,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:56:17,994 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [60332857] [2021-11-07 01:56:17,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:56:17,994 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:56:17,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:56:17,996 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:56:18,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:56:18,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:56:18,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:56:18,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:56:18,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:56:18,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:56:18,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:56:18,950 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:56:18,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [60332857] [2021-11-07 01:56:18,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [60332857] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:56:18,951 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:56:18,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:56:18,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592467200] [2021-11-07 01:56:18,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:56:18,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:56:18,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:56:18,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:56:18,954 INFO L87 Difference]: Start difference. First operand 8646 states and 16328 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:56:19,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:56:19,848 INFO L93 Difference]: Finished difference Result 17266 states and 32619 transitions. [2021-11-07 01:56:19,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:56:19,849 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 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 [2021-11-07 01:56:19,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:56:19,876 INFO L225 Difference]: With dead ends: 17266 [2021-11-07 01:56:19,876 INFO L226 Difference]: Without dead ends: 8646 [2021-11-07 01:56:19,890 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:56:19,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8646 states. [2021-11-07 01:56:20,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8646 to 8646. [2021-11-07 01:56:20,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8646 states, 8636 states have (on average 1.8895321908290876) internal successors, (16318), 8645 states have internal predecessors, (16318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:56:20,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8646 states to 8646 states and 16318 transitions. [2021-11-07 01:56:20,379 INFO L78 Accepts]: Start accepts. Automaton has 8646 states and 16318 transitions. Word has length 50 [2021-11-07 01:56:20,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:56:20,379 INFO L470 AbstractCegarLoop]: Abstraction has 8646 states and 16318 transitions. [2021-11-07 01:56:20,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:56:20,380 INFO L276 IsEmpty]: Start isEmpty. Operand 8646 states and 16318 transitions. [2021-11-07 01:56:20,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-07 01:56:20,383 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:56:20,384 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:56:20,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:56:20,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:56:20,607 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:56:20,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:56:20,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1963220943, now seen corresponding path program 1 times [2021-11-07 01:56:20,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:56:20,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [789394409] [2021-11-07 01:56:20,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:56:20,610 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:56:20,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:56:20,612 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:56:20,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:56:21,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:56:21,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:56:21,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:56:21,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:56:21,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:56:21,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:56:21,660 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:56:21,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [789394409] [2021-11-07 01:56:21,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [789394409] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:56:21,661 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:56:21,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:56:21,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573715412] [2021-11-07 01:56:21,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:56:21,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:56:21,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:56:21,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:56:21,663 INFO L87 Difference]: Start difference. First operand 8646 states and 16318 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:56:30,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:56:30,349 INFO L93 Difference]: Finished difference Result 38578 states and 72393 transitions. [2021-11-07 01:56:30,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-07 01:56:30,350 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 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 54 [2021-11-07 01:56:30,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:56:30,450 INFO L225 Difference]: With dead ends: 38578 [2021-11-07 01:56:30,451 INFO L226 Difference]: Without dead ends: 30002 [2021-11-07 01:56:30,471 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2021-11-07 01:56:30,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30002 states. [2021-11-07 01:56:31,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30002 to 15298. [2021-11-07 01:56:31,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15298 states, 15288 states have (on average 1.8895211930926217) internal successors, (28887), 15297 states have internal predecessors, (28887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:56:31,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15298 states to 15298 states and 28887 transitions. [2021-11-07 01:56:31,577 INFO L78 Accepts]: Start accepts. Automaton has 15298 states and 28887 transitions. Word has length 54 [2021-11-07 01:56:31,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:56:31,579 INFO L470 AbstractCegarLoop]: Abstraction has 15298 states and 28887 transitions. [2021-11-07 01:56:31,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:56:31,581 INFO L276 IsEmpty]: Start isEmpty. Operand 15298 states and 28887 transitions. [2021-11-07 01:56:31,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-07 01:56:31,584 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:56:31,585 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:56:31,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:56:31,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:56:31,805 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:56:31,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:56:31,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1663512598, now seen corresponding path program 1 times [2021-11-07 01:56:31,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:56:31,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [756733664] [2021-11-07 01:56:31,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:56:31,810 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:56:31,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:56:31,811 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:56:31,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:56:32,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:56:32,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:56:32,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:56:32,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:56:32,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:56:32,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:56:32,782 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:56:32,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [756733664] [2021-11-07 01:56:32,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [756733664] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:56:32,783 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:56:32,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:56:32,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770233808] [2021-11-07 01:56:32,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:56:32,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:56:32,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:56:32,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:56:32,786 INFO L87 Difference]: Start difference. First operand 15298 states and 28887 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:56:39,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:56:39,996 INFO L93 Difference]: Finished difference Result 125939 states and 237896 transitions. [2021-11-07 01:56:39,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:56:39,997 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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 54 [2021-11-07 01:56:39,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:56:40,301 INFO L225 Difference]: With dead ends: 125939 [2021-11-07 01:56:40,302 INFO L226 Difference]: Without dead ends: 110711 [2021-11-07 01:56:40,345 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:56:40,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110711 states. [2021-11-07 01:56:42,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110711 to 28243. [2021-11-07 01:56:42,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28243 states, 28233 states have (on average 1.8849573194488718) internal successors, (53218), 28242 states have internal predecessors, (53218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:56:42,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28243 states to 28243 states and 53218 transitions. [2021-11-07 01:56:42,522 INFO L78 Accepts]: Start accepts. Automaton has 28243 states and 53218 transitions. Word has length 54 [2021-11-07 01:56:42,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:56:42,523 INFO L470 AbstractCegarLoop]: Abstraction has 28243 states and 53218 transitions. [2021-11-07 01:56:42,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:56:42,524 INFO L276 IsEmpty]: Start isEmpty. Operand 28243 states and 53218 transitions. [2021-11-07 01:56:42,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-07 01:56:42,527 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:56:42,527 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, 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] [2021-11-07 01:56:42,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:56:42,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:56:42,750 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:56:42,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:56:42,751 INFO L85 PathProgramCache]: Analyzing trace with hash 57118417, now seen corresponding path program 1 times [2021-11-07 01:56:42,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:56:42,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1162362772] [2021-11-07 01:56:42,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:56:42,752 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:56:42,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:56:42,754 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:56:42,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:56:43,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:56:43,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:56:43,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:56:43,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:56:43,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:56:43,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:56:43,663 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:56:43,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1162362772] [2021-11-07 01:56:43,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1162362772] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:56:43,665 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:56:43,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:56:43,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055812659] [2021-11-07 01:56:43,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:56:43,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:56:43,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:56:43,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:56:43,669 INFO L87 Difference]: Start difference. First operand 28243 states and 53218 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:56:46,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:56:46,384 INFO L93 Difference]: Finished difference Result 83729 states and 157780 transitions. [2021-11-07 01:56:46,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:56:46,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 56 [2021-11-07 01:56:46,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:56:46,477 INFO L225 Difference]: With dead ends: 83729 [2021-11-07 01:56:46,477 INFO L226 Difference]: Without dead ends: 55518 [2021-11-07 01:56:46,509 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:56:46,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55518 states. [2021-11-07 01:56:47,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55518 to 28119. [2021-11-07 01:56:47,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28119 states, 28109 states have (on average 1.884449820342239) internal successors, (52970), 28118 states have internal predecessors, (52970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:56:47,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28119 states to 28119 states and 52970 transitions. [2021-11-07 01:56:47,796 INFO L78 Accepts]: Start accepts. Automaton has 28119 states and 52970 transitions. Word has length 56 [2021-11-07 01:56:47,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:56:47,797 INFO L470 AbstractCegarLoop]: Abstraction has 28119 states and 52970 transitions. [2021-11-07 01:56:47,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:56:47,797 INFO L276 IsEmpty]: Start isEmpty. Operand 28119 states and 52970 transitions. [2021-11-07 01:56:47,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-07 01:56:47,800 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:56:47,800 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, 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] [2021-11-07 01:56:47,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:56:48,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:56:48,008 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:56:48,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:56:48,008 INFO L85 PathProgramCache]: Analyzing trace with hash -570965804, now seen corresponding path program 1 times [2021-11-07 01:56:48,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:56:48,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1985449808] [2021-11-07 01:56:48,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:56:48,010 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:56:48,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:56:48,011 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:56:48,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:56:48,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:56:48,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:56:48,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:56:48,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:56:48,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:56:48,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:56:48,784 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:56:48,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1985449808] [2021-11-07 01:56:48,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1985449808] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:56:48,785 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:56:48,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:56:48,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852187687] [2021-11-07 01:56:48,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:56:48,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:56:48,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:56:48,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:56:48,786 INFO L87 Difference]: Start difference. First operand 28119 states and 52970 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:57:07,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:57:07,880 INFO L93 Difference]: Finished difference Result 106483 states and 200383 transitions. [2021-11-07 01:57:07,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 01:57:07,881 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 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 56 [2021-11-07 01:57:07,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:57:08,036 INFO L225 Difference]: With dead ends: 106483 [2021-11-07 01:57:08,036 INFO L226 Difference]: Without dead ends: 78398 [2021-11-07 01:57:08,068 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-11-07 01:57:08,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78398 states. [2021-11-07 01:57:10,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78398 to 50366. [2021-11-07 01:57:10,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50366 states, 50356 states have (on average 1.8480617999841131) internal successors, (93061), 50365 states have internal predecessors, (93061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:57:10,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50366 states to 50366 states and 93061 transitions. [2021-11-07 01:57:10,211 INFO L78 Accepts]: Start accepts. Automaton has 50366 states and 93061 transitions. Word has length 56 [2021-11-07 01:57:10,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:57:10,212 INFO L470 AbstractCegarLoop]: Abstraction has 50366 states and 93061 transitions. [2021-11-07 01:57:10,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:57:10,212 INFO L276 IsEmpty]: Start isEmpty. Operand 50366 states and 93061 transitions. [2021-11-07 01:57:10,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 01:57:10,424 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:57:10,424 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, 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] [2021-11-07 01:57:10,444 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-07 01:57:10,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:57:10,625 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:57:10,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:57:10,625 INFO L85 PathProgramCache]: Analyzing trace with hash 2145089138, now seen corresponding path program 1 times [2021-11-07 01:57:10,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:57:10,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [437821100] [2021-11-07 01:57:10,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:57:10,626 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:57:10,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:57:10,628 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:57:10,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:57:11,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:57:11,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:57:11,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:57:11,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:57:11,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:57:11,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:57:11,418 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:57:11,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [437821100] [2021-11-07 01:57:11,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [437821100] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:57:11,418 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:57:11,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:57:11,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101586183] [2021-11-07 01:57:11,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:57:11,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:57:11,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:57:11,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:57:11,420 INFO L87 Difference]: Start difference. First operand 50366 states and 93061 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:57:17,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:57:17,044 INFO L93 Difference]: Finished difference Result 198173 states and 366202 transitions. [2021-11-07 01:57:17,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:57:17,045 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 60 [2021-11-07 01:57:17,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:57:17,336 INFO L225 Difference]: With dead ends: 198173 [2021-11-07 01:57:17,336 INFO L226 Difference]: Without dead ends: 147844 [2021-11-07 01:57:17,387 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:57:17,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147844 states. [2021-11-07 01:57:20,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147844 to 50252. [2021-11-07 01:57:20,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50252 states, 50242 states have (on average 1.8436965088969388) internal successors, (92631), 50251 states have internal predecessors, (92631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:57:20,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50252 states to 50252 states and 92631 transitions. [2021-11-07 01:57:20,251 INFO L78 Accepts]: Start accepts. Automaton has 50252 states and 92631 transitions. Word has length 60 [2021-11-07 01:57:20,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:57:20,251 INFO L470 AbstractCegarLoop]: Abstraction has 50252 states and 92631 transitions. [2021-11-07 01:57:20,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:57:20,251 INFO L276 IsEmpty]: Start isEmpty. Operand 50252 states and 92631 transitions. [2021-11-07 01:57:20,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-07 01:57:20,253 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:57:20,253 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:57:20,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:57:20,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:57:20,469 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:57:20,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:57:20,469 INFO L85 PathProgramCache]: Analyzing trace with hash 435175991, now seen corresponding path program 1 times [2021-11-07 01:57:20,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:57:20,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [335834125] [2021-11-07 01:57:20,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:57:20,470 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:57:20,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:57:20,471 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:57:20,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d53d0729-5af1-4d0f-aae8-ac899671f306/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:57:20,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:57:21,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:57:21,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:57:21,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:57:21,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:57:21,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:57:21,382 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:57:21,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [335834125] [2021-11-07 01:57:21,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [335834125] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:57:21,382 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:57:21,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:57:21,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218858766] [2021-11-07 01:57:21,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:57:21,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:57:21,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:57:21,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:57:21,384 INFO L87 Difference]: Start difference. First operand 50252 states and 92631 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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)