./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/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_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/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 64bit --witnessprinter.graph.data.programhash 4b418a847569c2fdb13e49f0158439b90c8dabf7cf2f41b74c1e9948cb252ab6 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:53:47,905 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:53:47,908 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:53:47,941 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:53:47,941 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:53:47,943 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:53:47,945 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:53:47,947 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:53:47,950 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:53:47,951 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:53:47,953 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:53:47,955 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:53:47,955 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:53:47,957 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:53:47,959 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:53:47,960 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:53:47,962 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:53:47,963 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:53:47,966 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:53:47,969 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:53:47,971 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:53:47,972 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:53:47,974 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:53:47,975 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:53:47,979 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:53:47,980 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:53:47,980 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:53:47,982 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:53:47,992 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:53:47,994 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:53:47,994 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:53:47,995 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:53:47,996 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:53:47,997 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:53:47,999 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:53:47,999 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:53:48,000 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:53:48,001 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:53:48,001 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:53:48,002 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:53:48,005 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:53:48,007 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 00:53:48,055 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:53:48,072 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:53:48,074 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:53:48,074 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:53:48,075 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:53:48,075 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:53:48,075 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 00:53:48,076 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:53:48,076 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:53:48,076 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 00:53:48,077 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 00:53:48,078 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:53:48,078 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 00:53:48,078 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 00:53:48,079 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 00:53:48,080 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:53:48,080 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 00:53:48,080 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:53:48,080 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 00:53:48,081 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:53:48,081 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 00:53:48,081 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:53:48,081 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 00:53:48,082 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:53:48,082 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 00:53:48,082 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:53:48,083 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:53:48,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:53:48,083 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:53:48,085 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:53:48,085 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 00:53:48,086 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 00:53:48,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 00:53:48,086 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 00:53:48,087 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:53:48,087 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:53:48,087 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_57b38b72-db8f-419d-b452-a9c2f3f76bf8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b418a847569c2fdb13e49f0158439b90c8dabf7cf2f41b74c1e9948cb252ab6 [2021-11-07 00:53:48,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:53:48,487 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:53:48,491 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:53:48,493 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:53:48,494 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:53:48,495 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i [2021-11-07 00:53:48,580 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/data/afac00a75/6d75f42e95a14a3a923afd888a2149f7/FLAG656d582b0 [2021-11-07 00:53:49,741 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:53:49,742 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i [2021-11-07 00:53:49,809 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/data/afac00a75/6d75f42e95a14a3a923afd888a2149f7/FLAG656d582b0 [2021-11-07 00:53:50,098 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/data/afac00a75/6d75f42e95a14a3a923afd888a2149f7 [2021-11-07 00:53:50,100 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:53:50,102 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:53:50,103 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:53:50,104 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:53:50,121 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:53:50,122 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:53:50" (1/1) ... [2021-11-07 00:53:50,123 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@381705fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:50, skipping insertion in model container [2021-11-07 00:53:50,124 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:53:50" (1/1) ... [2021-11-07 00:53:50,132 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:53:50,269 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:53:51,950 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_57b38b72-db8f-419d-b452-a9c2f3f76bf8/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i[235755,235768] [2021-11-07 00:53:52,126 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:53:52,213 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 00:53:52,214 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@19b29f7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:52, skipping insertion in model container [2021-11-07 00:53:52,214 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:53:52,214 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 00:53:52,218 INFO L168 Benchmark]: Toolchain (without parser) took 2113.85 ms. Allocated memory was 90.2 MB in the beginning and 127.9 MB in the end (delta: 37.7 MB). Free memory was 56.0 MB in the beginning and 83.7 MB in the end (delta: -27.6 MB). Peak memory consumption was 39.6 MB. Max. memory is 16.1 GB. [2021-11-07 00:53:52,219 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 90.2 MB. Free memory is still 63.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 00:53:52,220 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2111.04 ms. Allocated memory was 90.2 MB in the beginning and 127.9 MB in the end (delta: 37.7 MB). Free memory was 55.8 MB in the beginning and 83.7 MB in the end (delta: -27.8 MB). Peak memory consumption was 39.6 MB. Max. memory is 16.1 GB. [2021-11-07 00:53:52,222 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 90.2 MB. Free memory is still 63.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2111.04 ms. Allocated memory was 90.2 MB in the beginning and 127.9 MB in the end (delta: 37.7 MB). Free memory was 55.8 MB in the beginning and 83.7 MB in the end (delta: -27.8 MB). Peak memory consumption was 39.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 4584]: 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_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/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_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/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 64bit --witnessprinter.graph.data.programhash 4b418a847569c2fdb13e49f0158439b90c8dabf7cf2f41b74c1e9948cb252ab6 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:53:54,559 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:53:54,562 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:53:54,596 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:53:54,597 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:53:54,599 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:53:54,600 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:53:54,603 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:53:54,605 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:53:54,607 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:53:54,608 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:53:54,610 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:53:54,611 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:53:54,613 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:53:54,615 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:53:54,620 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:53:54,621 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:53:54,622 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:53:54,636 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:53:54,639 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:53:54,644 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:53:54,646 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:53:54,649 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:53:54,652 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:53:54,659 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:53:54,664 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:53:54,664 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:53:54,668 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:53:54,669 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:53:54,671 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:53:54,671 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:53:54,672 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:53:54,674 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:53:54,675 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:53:54,677 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:53:54,678 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:53:54,679 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:53:54,680 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:53:54,680 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:53:54,682 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:53:54,683 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:53:54,685 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 00:53:54,735 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:53:54,735 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:53:54,737 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:53:54,737 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:53:54,737 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:53:54,738 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:53:54,738 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:53:54,738 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:53:54,739 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:53:54,740 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:53:54,741 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:53:54,742 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 00:53:54,742 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:53:54,742 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 00:53:54,743 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:53:54,743 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 00:53:54,743 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 00:53:54,743 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 00:53:54,743 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:53:54,744 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 00:53:54,744 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:53:54,744 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 00:53:54,745 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:53:54,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:53:54,745 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:53:54,745 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:53:54,746 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 00:53:54,746 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 00:53:54,746 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 00:53:54,746 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 00:53:54,747 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:53:54,747 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:53:54,747 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_57b38b72-db8f-419d-b452-a9c2f3f76bf8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b418a847569c2fdb13e49f0158439b90c8dabf7cf2f41b74c1e9948cb252ab6 [2021-11-07 00:53:55,128 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:53:55,168 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:53:55,172 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:53:55,173 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:53:55,174 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:53:55,175 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i [2021-11-07 00:53:55,257 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/data/734083a62/6ae658c3e63a4458a7bfb911489d86ca/FLAG5d965d768 [2021-11-07 00:53:56,332 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:53:56,334 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i [2021-11-07 00:53:56,437 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/data/734083a62/6ae658c3e63a4458a7bfb911489d86ca/FLAG5d965d768 [2021-11-07 00:53:56,708 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/data/734083a62/6ae658c3e63a4458a7bfb911489d86ca [2021-11-07 00:53:56,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:53:56,713 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:53:56,716 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:53:56,716 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:53:56,720 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:53:56,721 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:53:56" (1/1) ... [2021-11-07 00:53:56,722 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2eaa8c7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:56, skipping insertion in model container [2021-11-07 00:53:56,723 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:53:56" (1/1) ... [2021-11-07 00:53:56,732 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:53:56,896 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:53:58,860 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_57b38b72-db8f-419d-b452-a9c2f3f76bf8/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i[235755,235768] [2021-11-07 00:53:59,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:53:59,158 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 00:53:59,220 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:53:59,575 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_57b38b72-db8f-419d-b452-a9c2f3f76bf8/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i[235755,235768] [2021-11-07 00:53:59,593 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:53:59,628 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 00:54:00,062 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_57b38b72-db8f-419d-b452-a9c2f3f76bf8/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i[235755,235768] [2021-11-07 00:54:00,080 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:54:00,257 INFO L208 MainTranslator]: Completed translation [2021-11-07 00:54:00,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:00 WrapperNode [2021-11-07 00:54:00,258 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:54:00,260 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 00:54:00,260 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 00:54:00,260 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 00:54:00,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:00" (1/1) ... [2021-11-07 00:54:00,372 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:00" (1/1) ... [2021-11-07 00:54:01,580 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 00:54:01,582 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 00:54:01,582 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 00:54:01,582 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 00:54:01,591 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:00" (1/1) ... [2021-11-07 00:54:01,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:00" (1/1) ... [2021-11-07 00:54:01,847 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:00" (1/1) ... [2021-11-07 00:54:01,847 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:00" (1/1) ... [2021-11-07 00:54:02,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:00" (1/1) ... [2021-11-07 00:54:02,805 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:00" (1/1) ... [2021-11-07 00:54:02,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:00" (1/1) ... [2021-11-07 00:54:03,114 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 00:54:03,117 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 00:54:03,117 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 00:54:03,117 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 00:54:03,118 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:00" (1/1) ... [2021-11-07 00:54:03,130 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:54:03,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:54:03,196 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 00:54:03,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 00:54:03,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 00:54:03,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 00:54:03,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 00:54:03,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 00:54:03,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 00:54:03,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 00:54:03,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 00:54:03,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 00:54:03,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 00:54:03,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 00:54:03,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 00:54:03,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 00:54:03,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 00:54:03,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-07 00:54:03,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 00:54:03,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 00:54:03,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 00:54:03,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 00:54:03,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 00:54:03,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 00:54:03,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 00:54:03,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 00:54:03,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 00:54:03,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 00:54:03,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 00:54:03,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 00:54:03,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 00:54:03,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 00:54:03,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 00:57:26,374 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 00:57:26,375 INFO L299 CfgBuilder]: Removed 5131 assume(true) statements. [2021-11-07 00:57:26,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:57:26 BoogieIcfgContainer [2021-11-07 00:57:26,383 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 00:57:26,385 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 00:57:26,386 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 00:57:26,389 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 00:57:26,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:53:56" (1/3) ... [2021-11-07 00:57:26,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4197802a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:57:26, skipping insertion in model container [2021-11-07 00:57:26,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:00" (2/3) ... [2021-11-07 00:57:26,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4197802a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:57:26, skipping insertion in model container [2021-11-07 00:57:26,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:57:26" (3/3) ... [2021-11-07 00:57:26,393 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i [2021-11-07 00:57:26,399 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 00:57:26,399 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-11-07 00:57:26,485 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 00:57:26,495 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 00:57:26,496 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-11-07 00:57:26,614 INFO L276 IsEmpty]: Start isEmpty. Operand has 4852 states, 4839 states have (on average 1.3860301715230419) internal successors, (6707), 4851 states have internal predecessors, (6707), 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 00:57:26,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-07 00:57:26,623 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:57:26,624 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:57:26,625 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 00:57:26,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:57:26,629 INFO L85 PathProgramCache]: Analyzing trace with hash 220167062, now seen corresponding path program 1 times [2021-11-07 00:57:26,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:57:26,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1649779804] [2021-11-07 00:57:26,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:57:26,661 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:57:26,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:57:26,666 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:57:26,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 00:57:39,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:57:39,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 3204 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 00:57:39,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:57:40,095 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 00:57:40,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:57:40,552 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 00:57:40,553 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:57:40,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1649779804] [2021-11-07 00:57:40,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1649779804] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:57:40,554 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:57:40,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 00:57:40,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271270915] [2021-11-07 00:57:40,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 00:57:40,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:57:40,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 00:57:40,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 00:57:40,602 INFO L87 Difference]: Start difference. First operand has 4852 states, 4839 states have (on average 1.3860301715230419) internal successors, (6707), 4851 states have internal predecessors, (6707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 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 00:57:40,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:57:40,927 INFO L93 Difference]: Finished difference Result 9700 states and 13409 transitions. [2021-11-07 00:57:40,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 00:57:40,929 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 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 78 [2021-11-07 00:57:40,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:57:40,993 INFO L225 Difference]: With dead ends: 9700 [2021-11-07 00:57:40,993 INFO L226 Difference]: Without dead ends: 4844 [2021-11-07 00:57:41,012 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 00:57:41,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4844 states. [2021-11-07 00:57:41,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4844 to 4844. [2021-11-07 00:57:41,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4844 states, 4832 states have (on average 1.3640314569536425) internal successors, (6591), 4843 states have internal predecessors, (6591), 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 00:57:41,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4844 states to 4844 states and 6591 transitions. [2021-11-07 00:57:41,309 INFO L78 Accepts]: Start accepts. Automaton has 4844 states and 6591 transitions. Word has length 78 [2021-11-07 00:57:41,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:57:41,310 INFO L470 AbstractCegarLoop]: Abstraction has 4844 states and 6591 transitions. [2021-11-07 00:57:41,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 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 00:57:41,311 INFO L276 IsEmpty]: Start isEmpty. Operand 4844 states and 6591 transitions. [2021-11-07 00:57:41,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-07 00:57:41,322 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:57:41,322 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:57:41,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 00:57:41,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:57:41,539 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 00:57:41,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:57:41,540 INFO L85 PathProgramCache]: Analyzing trace with hash -85929696, now seen corresponding path program 1 times [2021-11-07 00:57:41,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:57:41,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [546787122] [2021-11-07 00:57:41,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:57:41,548 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:57:41,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:57:41,549 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:57:41,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 00:57:54,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:57:54,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 3204 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 00:57:54,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:57:55,102 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 00:57:55,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:57:55,516 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 00:57:55,516 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:57:55,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [546787122] [2021-11-07 00:57:55,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [546787122] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:57:55,518 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:57:55,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 00:57:55,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924989195] [2021-11-07 00:57:55,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:57:55,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:57:55,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:57:55,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:57:55,535 INFO L87 Difference]: Start difference. First operand 4844 states and 6591 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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 00:57:57,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:57:57,130 INFO L93 Difference]: Finished difference Result 9692 states and 13217 transitions. [2021-11-07 00:57:57,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:57:57,131 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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 78 [2021-11-07 00:57:57,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:57:57,168 INFO L225 Difference]: With dead ends: 9692 [2021-11-07 00:57:57,168 INFO L226 Difference]: Without dead ends: 4876 [2021-11-07 00:57:57,179 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 152 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 00:57:57,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4876 states. [2021-11-07 00:57:57,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4876 to 4876. [2021-11-07 00:57:57,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4876 states, 4864 states have (on average 1.3616365131578947) internal successors, (6623), 4875 states have internal predecessors, (6623), 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 00:57:57,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4876 states to 4876 states and 6623 transitions. [2021-11-07 00:57:57,352 INFO L78 Accepts]: Start accepts. Automaton has 4876 states and 6623 transitions. Word has length 78 [2021-11-07 00:57:57,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:57:57,353 INFO L470 AbstractCegarLoop]: Abstraction has 4876 states and 6623 transitions. [2021-11-07 00:57:57,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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 00:57:57,353 INFO L276 IsEmpty]: Start isEmpty. Operand 4876 states and 6623 transitions. [2021-11-07 00:57:57,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-07 00:57:57,355 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:57:57,356 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:57:57,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 00:57:57,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:57:57,578 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 00:57:57,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:57:57,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1744538338, now seen corresponding path program 1 times [2021-11-07 00:57:57,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:57:57,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [664112715] [2021-11-07 00:57:57,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:57:57,594 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:57:57,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:57:57,596 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:57:57,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 00:58:10,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:58:11,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 3324 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 00:58:11,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:58:11,858 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 00:58:11,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:58:12,873 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 00:58:12,874 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:58:12,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [664112715] [2021-11-07 00:58:12,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [664112715] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:58:12,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [233487163] [2021-11-07 00:58:12,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:58:12,875 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 00:58:12,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 00:58:12,882 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 00:58:12,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-07 00:58:16,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:58:16,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 3324 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 00:58:16,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:58:17,751 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 00:58:17,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:58:18,597 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 00:58:18,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [233487163] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:58:18,597 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 00:58:18,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 00:58:18,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698466537] [2021-11-07 00:58:18,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:58:18,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:58:18,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:58:18,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 00:58:18,600 INFO L87 Difference]: Start difference. First operand 4876 states and 6623 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 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 00:58:18,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:58:18,802 INFO L93 Difference]: Finished difference Result 4876 states and 6623 transitions. [2021-11-07 00:58:18,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:58:18,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 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 102 [2021-11-07 00:58:18,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:58:18,836 INFO L225 Difference]: With dead ends: 4876 [2021-11-07 00:58:18,837 INFO L226 Difference]: Without dead ends: 4874 [2021-11-07 00:58:18,840 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 00:58:18,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4874 states. [2021-11-07 00:58:19,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4874 to 4874. [2021-11-07 00:58:19,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4874 states, 4863 states have (on average 1.3615052436767427) internal successors, (6621), 4873 states have internal predecessors, (6621), 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 00:58:19,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4874 states to 4874 states and 6621 transitions. [2021-11-07 00:58:19,068 INFO L78 Accepts]: Start accepts. Automaton has 4874 states and 6621 transitions. Word has length 102 [2021-11-07 00:58:19,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:58:19,074 INFO L470 AbstractCegarLoop]: Abstraction has 4874 states and 6621 transitions. [2021-11-07 00:58:19,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 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 00:58:19,074 INFO L276 IsEmpty]: Start isEmpty. Operand 4874 states and 6621 transitions. [2021-11-07 00:58:19,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-07 00:58:19,079 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:58:19,079 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:58:19,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 00:58:19,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-07 00:58:19,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 00:58:19,503 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 00:58:19,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:58:19,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1753908543, now seen corresponding path program 1 times [2021-11-07 00:58:19,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:58:19,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2043152540] [2021-11-07 00:58:19,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:58:19,518 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:58:19,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:58:19,519 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:58:19,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 00:58:33,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:58:34,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 3325 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 00:58:34,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:58:34,687 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 00:58:34,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:58:35,410 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 00:58:35,410 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:58:35,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2043152540] [2021-11-07 00:58:35,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2043152540] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:58:35,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1711499386] [2021-11-07 00:58:35,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:58:35,411 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 00:58:35,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 00:58:35,424 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 00:58:35,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-07 00:58:39,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:58:39,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 3325 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 00:58:39,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:58:40,172 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 00:58:40,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:58:41,002 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 00:58:41,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1711499386] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:58:41,003 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 00:58:41,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 00:58:41,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550474966] [2021-11-07 00:58:41,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:58:41,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:58:41,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:58:41,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 00:58:41,007 INFO L87 Difference]: Start difference. First operand 4874 states and 6621 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 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 00:58:41,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:58:41,211 INFO L93 Difference]: Finished difference Result 4874 states and 6621 transitions. [2021-11-07 00:58:41,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:58:41,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 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 103 [2021-11-07 00:58:41,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:58:41,245 INFO L225 Difference]: With dead ends: 4874 [2021-11-07 00:58:41,245 INFO L226 Difference]: Without dead ends: 4872 [2021-11-07 00:58:41,249 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 00:58:41,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4872 states. [2021-11-07 00:58:41,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4872 to 4872. [2021-11-07 00:58:41,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4872 states, 4862 states have (on average 1.3613739201974495) internal successors, (6619), 4871 states have internal predecessors, (6619), 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 00:58:41,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4872 states to 4872 states and 6619 transitions. [2021-11-07 00:58:41,599 INFO L78 Accepts]: Start accepts. Automaton has 4872 states and 6619 transitions. Word has length 103 [2021-11-07 00:58:41,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:58:41,599 INFO L470 AbstractCegarLoop]: Abstraction has 4872 states and 6619 transitions. [2021-11-07 00:58:41,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 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 00:58:41,600 INFO L276 IsEmpty]: Start isEmpty. Operand 4872 states and 6619 transitions. [2021-11-07 00:58:41,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-07 00:58:41,602 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:58:41,602 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:58:41,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-07 00:58:41,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 00:58:42,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:58:42,024 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 00:58:42,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:58:42,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1463387832, now seen corresponding path program 1 times [2021-11-07 00:58:42,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:58:42,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1849147209] [2021-11-07 00:58:42,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:58:42,033 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:58:42,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:58:42,034 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:58:42,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 00:58:55,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:58:55,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 3326 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 00:58:55,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:58:56,304 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 00:58:56,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:58:57,069 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 00:58:57,070 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:58:57,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1849147209] [2021-11-07 00:58:57,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1849147209] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:58:57,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1157585430] [2021-11-07 00:58:57,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:58:57,070 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 00:58:57,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 00:58:57,072 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 00:58:57,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-07 00:59:01,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:59:01,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 3326 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 00:59:01,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:59:02,155 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 00:59:02,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:59:02,993 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 00:59:02,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1157585430] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:59:02,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 00:59:02,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 00:59:02,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554534890] [2021-11-07 00:59:02,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:59:02,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:59:02,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:59:02,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 00:59:02,995 INFO L87 Difference]: Start difference. First operand 4872 states and 6619 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 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 00:59:03,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:59:03,201 INFO L93 Difference]: Finished difference Result 4872 states and 6619 transitions. [2021-11-07 00:59:03,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:59:03,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 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 104 [2021-11-07 00:59:03,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:59:03,231 INFO L225 Difference]: With dead ends: 4872 [2021-11-07 00:59:03,232 INFO L226 Difference]: Without dead ends: 4870 [2021-11-07 00:59:03,235 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 00:59:03,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4870 states. [2021-11-07 00:59:03,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4870 to 4870. [2021-11-07 00:59:03,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4870 states, 4861 states have (on average 1.3612425426866899) internal successors, (6617), 4869 states have internal predecessors, (6617), 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 00:59:03,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4870 states to 4870 states and 6617 transitions. [2021-11-07 00:59:03,564 INFO L78 Accepts]: Start accepts. Automaton has 4870 states and 6617 transitions. Word has length 104 [2021-11-07 00:59:03,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:59:03,565 INFO L470 AbstractCegarLoop]: Abstraction has 4870 states and 6617 transitions. [2021-11-07 00:59:03,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 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 00:59:03,566 INFO L276 IsEmpty]: Start isEmpty. Operand 4870 states and 6617 transitions. [2021-11-07 00:59:03,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-07 00:59:03,567 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:59:03,568 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:59:03,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 00:59:03,802 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2021-11-07 00:59:03,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 00:59:03,979 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 00:59:03,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:59:03,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1879639657, now seen corresponding path program 1 times [2021-11-07 00:59:03,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:59:03,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [716323014] [2021-11-07 00:59:03,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:59:03,988 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:59:03,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:59:03,989 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:59:03,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 00:59:18,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:59:18,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 3327 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 00:59:18,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:59:19,060 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 00:59:19,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:59:19,833 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 00:59:19,834 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:59:19,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [716323014] [2021-11-07 00:59:19,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [716323014] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:59:19,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [372180680] [2021-11-07 00:59:19,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:59:19,835 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 00:59:19,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 00:59:19,843 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 00:59:19,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-07 00:59:24,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:59:24,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 3327 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 00:59:24,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:59:25,670 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 00:59:25,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:59:26,483 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 00:59:26,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [372180680] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:59:26,483 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 00:59:26,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 00:59:26,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196853926] [2021-11-07 00:59:26,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:59:26,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:59:26,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:59:26,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 00:59:26,487 INFO L87 Difference]: Start difference. First operand 4870 states and 6617 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 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 00:59:27,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:59:27,003 INFO L93 Difference]: Finished difference Result 14386 states and 19598 transitions. [2021-11-07 00:59:27,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:59:27,009 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 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 105 [2021-11-07 00:59:27,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:59:27,062 INFO L225 Difference]: With dead ends: 14386 [2021-11-07 00:59:27,062 INFO L226 Difference]: Without dead ends: 9604 [2021-11-07 00:59:27,073 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 409 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 00:59:27,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9604 states. [2021-11-07 00:59:27,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9604 to 9596. [2021-11-07 00:59:27,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9596 states, 9587 states have (on average 1.3632001668926672) internal successors, (13069), 9595 states have internal predecessors, (13069), 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 00:59:27,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9596 states to 9596 states and 13069 transitions. [2021-11-07 00:59:27,583 INFO L78 Accepts]: Start accepts. Automaton has 9596 states and 13069 transitions. Word has length 105 [2021-11-07 00:59:27,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:59:27,583 INFO L470 AbstractCegarLoop]: Abstraction has 9596 states and 13069 transitions. [2021-11-07 00:59:27,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 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 00:59:27,584 INFO L276 IsEmpty]: Start isEmpty. Operand 9596 states and 13069 transitions. [2021-11-07 00:59:27,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-07 00:59:27,591 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:59:27,591 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:59:27,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-07 00:59:27,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 00:59:28,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:59:28,008 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 00:59:28,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:59:28,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1186769558, now seen corresponding path program 1 times [2021-11-07 00:59:28,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:59:28,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [151514821] [2021-11-07 00:59:28,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:59:28,019 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:59:28,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:59:28,020 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:59:28,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 00:59:40,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:59:40,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 3450 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 00:59:40,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:59:41,609 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 00:59:41,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:59:42,429 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 00:59:42,429 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:59:42,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [151514821] [2021-11-07 00:59:42,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [151514821] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:59:42,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1079582572] [2021-11-07 00:59:42,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:59:42,430 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 00:59:42,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 00:59:42,431 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 00:59:42,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-07 00:59:47,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:59:47,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 3450 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 00:59:47,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:59:47,762 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 00:59:47,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:59:48,067 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 00:59:48,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1079582572] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:59:48,068 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 00:59:48,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 00:59:48,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310118575] [2021-11-07 00:59:48,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:59:48,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:59:48,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:59:48,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 00:59:48,070 INFO L87 Difference]: Start difference. First operand 9596 states and 13069 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 00:59:51,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:59:51,379 INFO L93 Difference]: Finished difference Result 23874 states and 32546 transitions. [2021-11-07 00:59:51,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:59:51,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 120 [2021-11-07 00:59:51,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:59:51,431 INFO L225 Difference]: With dead ends: 23874 [2021-11-07 00:59:51,431 INFO L226 Difference]: Without dead ends: 14371 [2021-11-07 00:59:51,451 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 469 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 00:59:51,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14371 states. [2021-11-07 00:59:52,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14371 to 14026. [2021-11-07 00:59:52,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14026 states, 14017 states have (on average 1.3651280587857602) internal successors, (19135), 14025 states have internal predecessors, (19135), 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 00:59:52,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14026 states to 14026 states and 19135 transitions. [2021-11-07 00:59:52,311 INFO L78 Accepts]: Start accepts. Automaton has 14026 states and 19135 transitions. Word has length 120 [2021-11-07 00:59:52,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:59:52,311 INFO L470 AbstractCegarLoop]: Abstraction has 14026 states and 19135 transitions. [2021-11-07 00:59:52,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 00:59:52,312 INFO L276 IsEmpty]: Start isEmpty. Operand 14026 states and 19135 transitions. [2021-11-07 00:59:52,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-07 00:59:52,316 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:59:52,316 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:59:52,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-07 00:59:52,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 00:59:52,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:59:52,738 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 00:59:52,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:59:52,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1712168042, now seen corresponding path program 1 times [2021-11-07 00:59:52,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:59:52,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [903444318] [2021-11-07 00:59:52,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:59:52,745 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:59:52,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:59:52,746 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:59:52,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:00:05,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:00:05,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 3453 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:00:05,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:00:06,450 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 01:00:06,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:00:07,269 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 01:00:07,269 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:00:07,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [903444318] [2021-11-07 01:00:07,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [903444318] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:00:07,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1539778077] [2021-11-07 01:00:07,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:00:07,270 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:00:07,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:00:07,271 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:00:07,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-07 01:00:12,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:00:12,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 3453 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:00:12,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:00:12,868 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 01:00:12,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:00:13,223 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 01:00:13,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1539778077] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:00:13,223 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:00:13,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:00:13,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674809054] [2021-11-07 01:00:13,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:00:13,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:00:13,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:00:13,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:00:13,226 INFO L87 Difference]: Start difference. First operand 14026 states and 19135 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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 01:00:16,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:00:16,460 INFO L93 Difference]: Finished difference Result 32738 states and 44702 transitions. [2021-11-07 01:00:16,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:00:16,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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 122 [2021-11-07 01:00:16,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:00:16,523 INFO L225 Difference]: With dead ends: 32738 [2021-11-07 01:00:16,523 INFO L226 Difference]: Without dead ends: 18805 [2021-11-07 01:00:16,664 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:00:16,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18805 states. [2021-11-07 01:00:17,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18805 to 18494. [2021-11-07 01:00:17,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18494 states, 18485 states have (on average 1.366351095482824) internal successors, (25257), 18493 states have internal predecessors, (25257), 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 01:00:17,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18494 states to 18494 states and 25257 transitions. [2021-11-07 01:00:17,573 INFO L78 Accepts]: Start accepts. Automaton has 18494 states and 25257 transitions. Word has length 122 [2021-11-07 01:00:17,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:00:17,573 INFO L470 AbstractCegarLoop]: Abstraction has 18494 states and 25257 transitions. [2021-11-07 01:00:17,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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 01:00:17,574 INFO L276 IsEmpty]: Start isEmpty. Operand 18494 states and 25257 transitions. [2021-11-07 01:00:17,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-07 01:00:17,595 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:00:17,596 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:00:17,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-07 01:00:17,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:00:18,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:00:18,021 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 01:00:18,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:00:18,021 INFO L85 PathProgramCache]: Analyzing trace with hash 2107386637, now seen corresponding path program 1 times [2021-11-07 01:00:18,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:00:18,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1570415432] [2021-11-07 01:00:18,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:00:18,031 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:00:18,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:00:18,032 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:00:18,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 01:00:31,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:00:31,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 3698 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:00:32,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:00:32,803 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-07 01:00:32,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:00:33,813 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-07 01:00:33,813 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:00:33,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1570415432] [2021-11-07 01:00:33,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1570415432] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:00:33,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1536844318] [2021-11-07 01:00:33,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:00:33,814 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:00:33,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:00:33,816 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:00:33,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-07 01:00:38,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:00:38,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 3698 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:00:38,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:00:38,678 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-07 01:00:38,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:00:38,982 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-07 01:00:38,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1536844318] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:00:38,983 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:00:38,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:00:38,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458948100] [2021-11-07 01:00:38,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:00:38,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:00:38,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:00:38,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:00:38,985 INFO L87 Difference]: Start difference. First operand 18494 states and 25257 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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 01:00:42,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:00:42,257 INFO L93 Difference]: Finished difference Result 36895 states and 50407 transitions. [2021-11-07 01:00:42,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:00:42,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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 164 [2021-11-07 01:00:42,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:00:42,307 INFO L225 Difference]: With dead ends: 36895 [2021-11-07 01:00:42,308 INFO L226 Difference]: Without dead ends: 18494 [2021-11-07 01:00:42,340 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 652 GetRequests, 645 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:00:42,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18494 states. [2021-11-07 01:00:42,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18494 to 18454. [2021-11-07 01:00:43,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18454 states, 18445 states have (on average 1.3658444022770397) internal successors, (25193), 18453 states have internal predecessors, (25193), 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 01:00:43,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18454 states to 18454 states and 25193 transitions. [2021-11-07 01:00:43,039 INFO L78 Accepts]: Start accepts. Automaton has 18454 states and 25193 transitions. Word has length 164 [2021-11-07 01:00:43,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:00:43,040 INFO L470 AbstractCegarLoop]: Abstraction has 18454 states and 25193 transitions. [2021-11-07 01:00:43,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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 01:00:43,040 INFO L276 IsEmpty]: Start isEmpty. Operand 18454 states and 25193 transitions. [2021-11-07 01:00:43,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-07 01:00:43,049 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:00:43,049 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:00:43,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 01:00:43,345 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2021-11-07 01:00:43,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:00:43,463 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 01:00:43,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:00:43,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1929415221, now seen corresponding path program 1 times [2021-11-07 01:00:43,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:00:43,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1755050357] [2021-11-07 01:00:43,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:00:43,469 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:00:43,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:00:43,470 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:00:43,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-07 01:00:56,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:00:56,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 3697 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:00:56,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:00:57,998 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-07 01:00:57,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:00:59,074 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-07 01:00:59,074 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:00:59,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1755050357] [2021-11-07 01:00:59,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1755050357] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:00:59,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1257732673] [2021-11-07 01:00:59,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:00:59,074 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:00:59,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:00:59,075 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:00:59,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-07 01:01:04,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:01:04,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 3697 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:01:04,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:01:04,910 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 01:01:04,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:01:05,462 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 01:01:05,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1257732673] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:01:05,462 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:01:05,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 01:01:05,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891237406] [2021-11-07 01:01:05,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:01:05,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:01:05,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:01:05,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:01:05,465 INFO L87 Difference]: Start difference. First operand 18454 states and 25193 transitions. Second operand has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 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 01:01:13,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:01:13,490 INFO L93 Difference]: Finished difference Result 47233 states and 64985 transitions. [2021-11-07 01:01:13,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:01:13,491 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 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 164 [2021-11-07 01:01:13,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:01:13,541 INFO L225 Difference]: With dead ends: 47233 [2021-11-07 01:01:13,541 INFO L226 Difference]: Without dead ends: 28872 [2021-11-07 01:01:13,568 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 652 GetRequests, 644 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:01:13,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28872 states. [2021-11-07 01:01:14,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28872 to 28142. [2021-11-07 01:01:14,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28142 states, 28133 states have (on average 1.3716631713645897) internal successors, (38589), 28141 states have internal predecessors, (38589), 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 01:01:14,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28142 states to 28142 states and 38589 transitions. [2021-11-07 01:01:14,767 INFO L78 Accepts]: Start accepts. Automaton has 28142 states and 38589 transitions. Word has length 164 [2021-11-07 01:01:14,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:01:14,768 INFO L470 AbstractCegarLoop]: Abstraction has 28142 states and 38589 transitions. [2021-11-07 01:01:14,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 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 01:01:14,768 INFO L276 IsEmpty]: Start isEmpty. Operand 28142 states and 38589 transitions. [2021-11-07 01:01:14,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-07 01:01:14,773 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:01:14,773 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:01:14,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-11-07 01:01:15,058 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-11-07 01:01:15,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:01:15,187 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 01:01:15,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:01:15,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1661917985, now seen corresponding path program 1 times [2021-11-07 01:01:15,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:01:15,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2116077009] [2021-11-07 01:01:15,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:01:15,194 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:01:15,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:01:15,195 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:01:15,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-07 01:01:28,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:01:29,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 3701 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:01:29,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:01:29,979 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 01:01:29,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:01:31,049 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 01:01:31,049 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:01:31,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2116077009] [2021-11-07 01:01:31,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2116077009] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:01:31,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1613454154] [2021-11-07 01:01:31,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:01:31,049 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:01:31,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:01:31,050 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:01:31,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-07 01:01:35,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:01:35,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 3701 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:01:35,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:01:36,371 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 01:01:36,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:01:36,963 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 01:01:36,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1613454154] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:01:36,963 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:01:36,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 01:01:36,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586151423] [2021-11-07 01:01:36,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:01:36,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:01:36,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:01:36,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:01:36,965 INFO L87 Difference]: Start difference. First operand 28142 states and 38589 transitions. Second operand has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 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 01:01:45,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:01:45,809 INFO L93 Difference]: Finished difference Result 68277 states and 94717 transitions. [2021-11-07 01:01:45,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:01:45,809 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 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 166 [2021-11-07 01:01:45,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:01:45,893 INFO L225 Difference]: With dead ends: 68277 [2021-11-07 01:01:45,893 INFO L226 Difference]: Without dead ends: 40228 [2021-11-07 01:01:45,929 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 660 GetRequests, 652 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:01:45,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40228 states. [2021-11-07 01:01:47,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40228 to 39566. [2021-11-07 01:01:47,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39566 states, 39557 states have (on average 1.3809186743180726) internal successors, (54625), 39565 states have internal predecessors, (54625), 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 01:01:47,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39566 states to 39566 states and 54625 transitions. [2021-11-07 01:01:47,617 INFO L78 Accepts]: Start accepts. Automaton has 39566 states and 54625 transitions. Word has length 166 [2021-11-07 01:01:47,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:01:47,617 INFO L470 AbstractCegarLoop]: Abstraction has 39566 states and 54625 transitions. [2021-11-07 01:01:47,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 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 01:01:47,618 INFO L276 IsEmpty]: Start isEmpty. Operand 39566 states and 54625 transitions. [2021-11-07 01:01:47,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-11-07 01:01:47,643 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:01:47,643 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:01:47,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-11-07 01:01:47,943 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-11-07 01:01:48,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:01:48,059 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 01:01:48,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:01:48,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1936842533, now seen corresponding path program 1 times [2021-11-07 01:01:48,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:01:48,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [914202765] [2021-11-07 01:01:48,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:01:48,069 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:01:48,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:01:48,070 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:01:48,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-07 01:02:01,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:02:02,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 3862 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:02:02,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:02:03,236 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:02:03,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:02:04,498 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:02:04,498 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:02:04,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [914202765] [2021-11-07 01:02:04,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [914202765] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:02:04,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [616810073] [2021-11-07 01:02:04,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:02:04,499 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:02:04,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:02:04,514 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:02:04,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-07 01:02:09,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:02:09,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 3862 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:02:09,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:02:10,653 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-07 01:02:10,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:02:11,327 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-07 01:02:11,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [616810073] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:02:11,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:02:11,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 01:02:11,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363385719] [2021-11-07 01:02:11,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:02:11,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:02:11,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:02:11,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:02:11,329 INFO L87 Difference]: Start difference. First operand 39566 states and 54625 transitions. Second operand has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:02:19,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:02:19,671 INFO L93 Difference]: Finished difference Result 91185 states and 126561 transitions. [2021-11-07 01:02:19,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:02:19,671 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 218 [2021-11-07 01:02:19,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:02:19,758 INFO L225 Difference]: With dead ends: 91185 [2021-11-07 01:02:19,758 INFO L226 Difference]: Without dead ends: 51712 [2021-11-07 01:02:19,794 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 868 GetRequests, 860 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:02:19,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51712 states. [2021-11-07 01:02:21,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51712 to 50982. [2021-11-07 01:02:21,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50982 states, 50973 states have (on average 1.379808918447021) internal successors, (70333), 50981 states have internal predecessors, (70333), 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 01:02:21,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50982 states to 50982 states and 70333 transitions. [2021-11-07 01:02:21,902 INFO L78 Accepts]: Start accepts. Automaton has 50982 states and 70333 transitions. Word has length 218 [2021-11-07 01:02:21,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:02:21,903 INFO L470 AbstractCegarLoop]: Abstraction has 50982 states and 70333 transitions. [2021-11-07 01:02:21,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:02:21,903 INFO L276 IsEmpty]: Start isEmpty. Operand 50982 states and 70333 transitions. [2021-11-07 01:02:21,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-11-07 01:02:21,915 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:02:21,915 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:02:21,996 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-11-07 01:02:22,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-11-07 01:02:22,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:02:22,331 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 01:02:22,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:02:22,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1183858711, now seen corresponding path program 1 times [2021-11-07 01:02:22,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:02:22,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1649146365] [2021-11-07 01:02:22,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:02:22,338 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:02:22,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:02:22,339 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:02:22,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-07 01:02:37,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:02:37,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 3870 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:02:37,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:02:39,012 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-11-07 01:02:39,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:02:40,596 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-11-07 01:02:40,596 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:02:40,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1649146365] [2021-11-07 01:02:40,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1649146365] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:02:40,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2071767179] [2021-11-07 01:02:40,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:02:40,597 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:02:40,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:02:40,598 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:02:40,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-11-07 01:02:46,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:02:46,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 3870 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:02:46,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:02:47,361 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-07 01:02:47,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:02:47,995 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-07 01:02:47,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2071767179] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:02:47,995 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:02:47,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 01:02:47,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890376566] [2021-11-07 01:02:47,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:02:47,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:02:47,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:02:47,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:02:47,998 INFO L87 Difference]: Start difference. First operand 50982 states and 70333 transitions. Second operand has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 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 01:02:56,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:02:56,105 INFO L93 Difference]: Finished difference Result 115677 states and 160605 transitions. [2021-11-07 01:02:56,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:02:56,106 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 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 222 [2021-11-07 01:02:56,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:02:56,211 INFO L225 Difference]: With dead ends: 115677 [2021-11-07 01:02:56,211 INFO L226 Difference]: Without dead ends: 64788 [2021-11-07 01:02:56,255 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 884 GetRequests, 876 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:02:56,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64788 states. [2021-11-07 01:02:59,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64788 to 64126. [2021-11-07 01:02:59,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64126 states, 64117 states have (on average 1.3779964751937863) internal successors, (88353), 64125 states have internal predecessors, (88353), 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 01:02:59,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64126 states to 64126 states and 88353 transitions. [2021-11-07 01:02:59,416 INFO L78 Accepts]: Start accepts. Automaton has 64126 states and 88353 transitions. Word has length 222 [2021-11-07 01:02:59,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:02:59,417 INFO L470 AbstractCegarLoop]: Abstraction has 64126 states and 88353 transitions. [2021-11-07 01:02:59,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 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 01:02:59,417 INFO L276 IsEmpty]: Start isEmpty. Operand 64126 states and 88353 transitions. [2021-11-07 01:02:59,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-11-07 01:02:59,428 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:02:59,428 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:02:59,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-07 01:02:59,664 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (25)] Ended with exit code 0 [2021-11-07 01:02:59,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:02:59,843 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 01:02:59,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:02:59,843 INFO L85 PathProgramCache]: Analyzing trace with hash 268146147, now seen corresponding path program 1 times [2021-11-07 01:02:59,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:02:59,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1144901204] [2021-11-07 01:02:59,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:02:59,853 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:02:59,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:02:59,854 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:02:59,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-07 01:03:14,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:03:14,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 3861 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:03:14,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:03:16,011 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-11-07 01:03:16,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:03:17,309 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-11-07 01:03:17,309 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:03:17,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1144901204] [2021-11-07 01:03:17,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1144901204] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:03:17,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [146114972] [2021-11-07 01:03:17,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:03:17,310 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:03:17,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:03:17,310 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:03:17,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b38b72-db8f-419d-b452-a9c2f3f76bf8/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2021-11-07 01:03:23,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:03:23,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 3861 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:03:23,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:03:24,341 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:03:24,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:03:24,878 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:03:24,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [146114972] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:03:24,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:03:24,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 12 [2021-11-07 01:03:24,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391292652] [2021-11-07 01:03:24,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:03:24,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:03:24,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:03:24,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:03:24,880 INFO L87 Difference]: Start difference. First operand 64126 states and 88353 transitions. Second operand has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 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 01:03:41,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:03:41,598 INFO L93 Difference]: Finished difference Result 286340 states and 391249 transitions. [2021-11-07 01:03:41,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:03:41,599 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 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 222 [2021-11-07 01:03:41,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:03:42,089 INFO L225 Difference]: With dead ends: 286340 [2021-11-07 01:03:42,090 INFO L226 Difference]: Without dead ends: 222307 [2021-11-07 01:03:42,195 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 888 GetRequests, 876 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-11-07 01:03:42,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222307 states.