./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--sja1000--sja1000.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_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/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_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--sja1000--sja1000.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/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_1cb2247e-a382-4601-8beb-057b43e499fd/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 4e0b4bb78430cd3ff87fa852dcd49e649016647ef60f492a14a048040c1b0a8a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:16:56,624 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:16:56,627 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:16:56,670 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:16:56,670 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:16:56,672 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:16:56,674 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:16:56,676 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:16:56,679 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:16:56,680 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:16:56,682 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:16:56,683 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:16:56,684 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:16:56,685 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:16:56,687 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:16:56,689 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:16:56,690 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:16:56,691 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:16:56,693 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:16:56,696 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:16:56,698 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:16:56,703 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:16:56,704 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:16:56,706 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:16:56,710 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:16:56,716 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:16:56,717 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:16:56,718 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:16:56,720 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:16:56,721 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:16:56,722 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:16:56,724 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:16:56,726 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:16:56,727 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:16:56,729 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:16:56,729 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:16:56,730 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:16:56,730 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:16:56,730 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:16:56,731 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:16:56,732 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:16:56,733 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 02:16:56,776 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:16:56,779 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:16:56,781 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:16:56,782 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:16:56,782 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:16:56,782 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:16:56,782 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:16:56,783 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:16:56,788 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:16:56,789 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:16:56,790 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:16:56,790 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:16:56,790 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:16:56,790 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:16:56,791 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:16:56,791 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:16:56,791 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:16:56,792 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:16:56,792 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:16:56,794 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:16:56,794 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:16:56,795 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:16:56,799 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:16:56,800 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:16:56,800 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:16:56,800 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:16:56,800 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:16:56,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:16:56,801 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:16:56,801 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:16:56,804 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:16:56,804 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:16:56,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:16:56,804 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:16:56,805 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:16:56,805 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:16:56,805 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_1cb2247e-a382-4601-8beb-057b43e499fd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e0b4bb78430cd3ff87fa852dcd49e649016647ef60f492a14a048040c1b0a8a [2021-11-07 02:16:57,095 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:16:57,122 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:16:57,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:16:57,125 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:16:57,126 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:16:57,127 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--sja1000--sja1000.ko-entry_point.cil.out.i [2021-11-07 02:16:57,203 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/data/6fcc26b7a/639790bb66054e478201dc055c463043/FLAG102cac546 [2021-11-07 02:16:58,157 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:16:58,158 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--sja1000--sja1000.ko-entry_point.cil.out.i [2021-11-07 02:16:58,231 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/data/6fcc26b7a/639790bb66054e478201dc055c463043/FLAG102cac546 [2021-11-07 02:16:58,594 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/data/6fcc26b7a/639790bb66054e478201dc055c463043 [2021-11-07 02:16:58,597 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:16:58,600 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:16:58,604 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:16:58,604 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:16:58,608 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:16:58,610 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:16:58" (1/1) ... [2021-11-07 02:16:58,612 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bafc04f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:58, skipping insertion in model container [2021-11-07 02:16:58,613 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:16:58" (1/1) ... [2021-11-07 02:16:58,622 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:16:58,858 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:16:59,594 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_1cb2247e-a382-4601-8beb-057b43e499fd/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--sja1000--sja1000.ko-entry_point.cil.out.i[152066,152079] [2021-11-07 02:17:00,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:17:00,484 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 02:17:00,485 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@e7d014c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:17:00, skipping insertion in model container [2021-11-07 02:17:00,485 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:17:00,486 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 02:17:00,489 INFO L168 Benchmark]: Toolchain (without parser) took 1887.03 ms. Allocated memory was 79.7 MB in the beginning and 104.9 MB in the end (delta: 25.2 MB). Free memory was 51.2 MB in the beginning and 55.0 MB in the end (delta: -3.7 MB). Peak memory consumption was 50.3 MB. Max. memory is 16.1 GB. [2021-11-07 02:17:00,491 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 79.7 MB. Free memory was 56.5 MB in the beginning and 56.4 MB in the end (delta: 79.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:17:00,493 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1881.86 ms. Allocated memory was 79.7 MB in the beginning and 104.9 MB in the end (delta: 25.2 MB). Free memory was 51.0 MB in the beginning and 55.0 MB in the end (delta: -4.0 MB). Peak memory consumption was 50.3 MB. Max. memory is 16.1 GB. [2021-11-07 02:17:00,496 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 79.7 MB. Free memory was 56.5 MB in the beginning and 56.4 MB in the end (delta: 79.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1881.86 ms. Allocated memory was 79.7 MB in the beginning and 104.9 MB in the end (delta: 25.2 MB). Free memory was 51.0 MB in the beginning and 55.0 MB in the end (delta: -4.0 MB). Peak memory consumption was 50.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 5479]: 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_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/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_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--sja1000--sja1000.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/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_1cb2247e-a382-4601-8beb-057b43e499fd/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 4e0b4bb78430cd3ff87fa852dcd49e649016647ef60f492a14a048040c1b0a8a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:17:03,360 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:17:03,363 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:17:03,404 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:17:03,405 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:17:03,406 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:17:03,409 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:17:03,411 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:17:03,414 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:17:03,415 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:17:03,417 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:17:03,419 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:17:03,419 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:17:03,421 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:17:03,423 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:17:03,425 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:17:03,426 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:17:03,428 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:17:03,431 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:17:03,434 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:17:03,443 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:17:03,446 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:17:03,447 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:17:03,448 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:17:03,452 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:17:03,453 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:17:03,453 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:17:03,455 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:17:03,455 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:17:03,457 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:17:03,457 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:17:03,464 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:17:03,467 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:17:03,468 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:17:03,472 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:17:03,472 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:17:03,474 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:17:03,474 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:17:03,482 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:17:03,484 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:17:03,485 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:17:03,491 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 02:17:03,547 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:17:03,547 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:17:03,549 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:17:03,549 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:17:03,549 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:17:03,550 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:17:03,550 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:17:03,550 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:17:03,550 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:17:03,552 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:17:03,553 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:17:03,553 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:17:03,554 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:17:03,554 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:17:03,554 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:17:03,554 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 02:17:03,555 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 02:17:03,555 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:17:03,555 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:17:03,555 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:17:03,556 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:17:03,556 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 02:17:03,556 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:17:03,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:17:03,556 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:17:03,557 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:17:03,557 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:17:03,557 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 02:17:03,557 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 02:17:03,558 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:17:03,558 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:17:03,558 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:17:03,558 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_1cb2247e-a382-4601-8beb-057b43e499fd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e0b4bb78430cd3ff87fa852dcd49e649016647ef60f492a14a048040c1b0a8a [2021-11-07 02:17:04,003 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:17:04,030 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:17:04,033 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:17:04,035 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:17:04,039 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:17:04,041 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--sja1000--sja1000.ko-entry_point.cil.out.i [2021-11-07 02:17:04,116 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/data/2c5ce04d6/34b01965e42d4d238fb9120b49066699/FLAG31d159458 [2021-11-07 02:17:05,314 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:17:05,315 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--sja1000--sja1000.ko-entry_point.cil.out.i [2021-11-07 02:17:05,376 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/data/2c5ce04d6/34b01965e42d4d238fb9120b49066699/FLAG31d159458 [2021-11-07 02:17:05,658 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/data/2c5ce04d6/34b01965e42d4d238fb9120b49066699 [2021-11-07 02:17:05,662 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:17:05,665 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:17:05,669 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:17:05,670 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:17:05,674 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:17:05,675 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:17:05" (1/1) ... [2021-11-07 02:17:05,678 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5113c691 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:17:05, skipping insertion in model container [2021-11-07 02:17:05,678 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:17:05" (1/1) ... [2021-11-07 02:17:05,687 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:17:05,858 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:17:06,674 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_1cb2247e-a382-4601-8beb-057b43e499fd/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--sja1000--sja1000.ko-entry_point.cil.out.i[152066,152079] [2021-11-07 02:17:07,323 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:17:07,389 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 02:17:07,452 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:17:07,612 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_1cb2247e-a382-4601-8beb-057b43e499fd/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--sja1000--sja1000.ko-entry_point.cil.out.i[152066,152079] [2021-11-07 02:17:07,842 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:17:07,873 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:17:08,092 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_1cb2247e-a382-4601-8beb-057b43e499fd/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--sja1000--sja1000.ko-entry_point.cil.out.i[152066,152079] [2021-11-07 02:17:08,574 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:17:08,702 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:17:08,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:17:08 WrapperNode [2021-11-07 02:17:08,703 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:17:08,705 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:17:08,706 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:17:08,706 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:17:08,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:17:08" (1/1) ... [2021-11-07 02:17:08,800 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:17:08" (1/1) ... [2021-11-07 02:17:09,121 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:17:09,122 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:17:09,122 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:17:09,123 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:17:09,131 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:17:08" (1/1) ... [2021-11-07 02:17:09,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:17:08" (1/1) ... [2021-11-07 02:17:09,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:17:08" (1/1) ... [2021-11-07 02:17:09,166 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:17:08" (1/1) ... [2021-11-07 02:17:09,295 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:17:08" (1/1) ... [2021-11-07 02:17:09,318 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:17:08" (1/1) ... [2021-11-07 02:17:09,335 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:17:08" (1/1) ... [2021-11-07 02:17:09,364 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:17:09,366 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:17:09,366 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:17:09,366 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:17:09,367 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:17:08" (1/1) ... [2021-11-07 02:17:09,379 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:17:09,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:17:09,407 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:17:09,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:17:09,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 02:17:09,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 02:17:09,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 02:17:09,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 02:17:09,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 02:17:09,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 02:17:09,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:17:09,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 02:17:09,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 02:17:09,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 02:17:09,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 02:17:09,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 02:17:09,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 02:17:09,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 02:17:09,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 02:17:09,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:17:09,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:18:00,126 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:18:00,127 INFO L299 CfgBuilder]: Removed 1028 assume(true) statements. [2021-11-07 02:18:00,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:18:00 BoogieIcfgContainer [2021-11-07 02:18:00,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:18:00,135 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:18:00,135 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:18:00,139 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:18:00,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:17:05" (1/3) ... [2021-11-07 02:18:00,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c3ae15b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:18:00, skipping insertion in model container [2021-11-07 02:18:00,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:17:08" (2/3) ... [2021-11-07 02:18:00,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c3ae15b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:18:00, skipping insertion in model container [2021-11-07 02:18:00,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:18:00" (3/3) ... [2021-11-07 02:18:00,143 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--sja1000--sja1000.ko-entry_point.cil.out.i [2021-11-07 02:18:00,150 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:18:00,150 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 02:18:00,213 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:18:00,220 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 02:18:00,220 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 02:18:00,267 INFO L276 IsEmpty]: Start isEmpty. Operand has 925 states, 923 states have (on average 1.4214517876489707) internal successors, (1312), 924 states have internal predecessors, (1312), 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 02:18:00,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-07 02:18:00,281 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:18:00,282 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:18:00,282 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:18:00,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:18:00,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1623704194, now seen corresponding path program 1 times [2021-11-07 02:18:00,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:18:00,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [604821334] [2021-11-07 02:18:00,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:18:00,305 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:18:00,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:18:00,306 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:18:00,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:18:01,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:18:01,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:18:01,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:18:01,411 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 02:18:01,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:18:01,512 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 02:18:01,513 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:18:01,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [604821334] [2021-11-07 02:18:01,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [604821334] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:18:01,514 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:18:01,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:18:01,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556481818] [2021-11-07 02:18:01,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:18:01,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:18:01,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:18:01,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:18:01,544 INFO L87 Difference]: Start difference. First operand has 925 states, 923 states have (on average 1.4214517876489707) internal successors, (1312), 924 states have internal predecessors, (1312), 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 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:18:04,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:18:04,087 INFO L93 Difference]: Finished difference Result 3644 states and 5179 transitions. [2021-11-07 02:18:04,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:18:04,089 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-07 02:18:04,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:18:04,142 INFO L225 Difference]: With dead ends: 3644 [2021-11-07 02:18:04,142 INFO L226 Difference]: Without dead ends: 2696 [2021-11-07 02:18:04,155 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 28 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 02:18:04,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2696 states. [2021-11-07 02:18:04,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2696 to 2696. [2021-11-07 02:18:04,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2696 states, 2695 states have (on average 1.3666048237476809) internal successors, (3683), 2695 states have internal predecessors, (3683), 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 02:18:04,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2696 states to 2696 states and 3683 transitions. [2021-11-07 02:18:04,410 INFO L78 Accepts]: Start accepts. Automaton has 2696 states and 3683 transitions. Word has length 16 [2021-11-07 02:18:04,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:18:04,411 INFO L470 AbstractCegarLoop]: Abstraction has 2696 states and 3683 transitions. [2021-11-07 02:18:04,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:18:04,412 INFO L276 IsEmpty]: Start isEmpty. Operand 2696 states and 3683 transitions. [2021-11-07 02:18:04,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-07 02:18:04,415 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:18:04,415 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:18:04,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 02:18:04,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:18:04,642 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:18:04,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:18:04,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1173805614, now seen corresponding path program 1 times [2021-11-07 02:18:04,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:18:04,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1807745388] [2021-11-07 02:18:04,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:18:04,646 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:18:04,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:18:04,647 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:18:04,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:18:05,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:18:05,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:18:05,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:18:05,637 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 02:18:05,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:18:05,715 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 02:18:05,715 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:18:05,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1807745388] [2021-11-07 02:18:05,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1807745388] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:18:05,716 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:18:05,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 02:18:05,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940236471] [2021-11-07 02:18:05,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:18:05,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:18:05,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:18:05,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:18:05,720 INFO L87 Difference]: Start difference. First operand 2696 states and 3683 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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 02:18:06,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:18:06,005 INFO L93 Difference]: Finished difference Result 5383 states and 7355 transitions. [2021-11-07 02:18:06,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:18:06,006 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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 19 [2021-11-07 02:18:06,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:18:06,024 INFO L225 Difference]: With dead ends: 5383 [2021-11-07 02:18:06,024 INFO L226 Difference]: Without dead ends: 2695 [2021-11-07 02:18:06,029 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:18:06,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2695 states. [2021-11-07 02:18:06,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2695 to 2695. [2021-11-07 02:18:06,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2695 states, 2694 states have (on average 1.3656273199703044) internal successors, (3679), 2694 states have internal predecessors, (3679), 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 02:18:06,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2695 states to 2695 states and 3679 transitions. [2021-11-07 02:18:06,211 INFO L78 Accepts]: Start accepts. Automaton has 2695 states and 3679 transitions. Word has length 19 [2021-11-07 02:18:06,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:18:06,212 INFO L470 AbstractCegarLoop]: Abstraction has 2695 states and 3679 transitions. [2021-11-07 02:18:06,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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 02:18:06,212 INFO L276 IsEmpty]: Start isEmpty. Operand 2695 states and 3679 transitions. [2021-11-07 02:18:06,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-07 02:18:06,216 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:18:06,217 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:18:06,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:18:06,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:18:06,437 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:18:06,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:18:06,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1634674481, now seen corresponding path program 1 times [2021-11-07 02:18:06,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:18:06,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1504259771] [2021-11-07 02:18:06,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:18:06,439 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:18:06,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:18:06,442 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:18:06,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 02:18:07,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:18:07,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:18:07,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:18:07,526 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 02:18:07,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:18:07,738 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 02:18:07,738 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:18:07,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1504259771] [2021-11-07 02:18:07,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1504259771] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:18:07,739 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:18:07,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-07 02:18:07,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115692190] [2021-11-07 02:18:07,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 02:18:07,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:18:07,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 02:18:07,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-07 02:18:07,742 INFO L87 Difference]: Start difference. First operand 2695 states and 3679 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 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 02:18:08,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:18:08,909 INFO L93 Difference]: Finished difference Result 5382 states and 7349 transitions. [2021-11-07 02:18:08,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:18:08,910 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-07 02:18:08,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:18:08,952 INFO L225 Difference]: With dead ends: 5382 [2021-11-07 02:18:08,952 INFO L226 Difference]: Without dead ends: 5376 [2021-11-07 02:18:08,959 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:18:08,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5376 states. [2021-11-07 02:18:09,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5376 to 5268. [2021-11-07 02:18:09,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5268 states, 5267 states have (on average 1.36852097968483) internal successors, (7208), 5267 states have internal predecessors, (7208), 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 02:18:09,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5268 states to 5268 states and 7208 transitions. [2021-11-07 02:18:09,341 INFO L78 Accepts]: Start accepts. Automaton has 5268 states and 7208 transitions. Word has length 28 [2021-11-07 02:18:09,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:18:09,342 INFO L470 AbstractCegarLoop]: Abstraction has 5268 states and 7208 transitions. [2021-11-07 02:18:09,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 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 02:18:09,343 INFO L276 IsEmpty]: Start isEmpty. Operand 5268 states and 7208 transitions. [2021-11-07 02:18:09,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-07 02:18:09,352 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:18:09,352 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-07 02:18:09,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:18:09,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:18:09,566 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:18:09,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:18:09,567 INFO L85 PathProgramCache]: Analyzing trace with hash 844115543, now seen corresponding path program 1 times [2021-11-07 02:18:09,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:18:09,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1099326411] [2021-11-07 02:18:09,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:18:09,569 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:18:09,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:18:09,570 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:18:09,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 02:18:10,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:18:10,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:18:10,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:18:10,751 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:18:10,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:18:11,011 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:18:11,012 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:18:11,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1099326411] [2021-11-07 02:18:11,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1099326411] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:18:11,012 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:18:11,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:18:11,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635574038] [2021-11-07 02:18:11,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:18:11,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:18:11,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:18:11,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:18:11,015 INFO L87 Difference]: Start difference. First operand 5268 states and 7208 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 02:18:14,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:18:14,069 INFO L93 Difference]: Finished difference Result 19236 states and 26443 transitions. [2021-11-07 02:18:14,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:18:14,070 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 52 [2021-11-07 02:18:14,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:18:14,181 INFO L225 Difference]: With dead ends: 19236 [2021-11-07 02:18:14,182 INFO L226 Difference]: Without dead ends: 13976 [2021-11-07 02:18:14,196 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 100 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 02:18:14,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13976 states. [2021-11-07 02:18:14,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13976 to 13952. [2021-11-07 02:18:14,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13952 states, 13951 states have (on average 1.3730915346570138) internal successors, (19156), 13951 states have internal predecessors, (19156), 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 02:18:15,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13952 states to 13952 states and 19156 transitions. [2021-11-07 02:18:15,025 INFO L78 Accepts]: Start accepts. Automaton has 13952 states and 19156 transitions. Word has length 52 [2021-11-07 02:18:15,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:18:15,026 INFO L470 AbstractCegarLoop]: Abstraction has 13952 states and 19156 transitions. [2021-11-07 02:18:15,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 02:18:15,028 INFO L276 IsEmpty]: Start isEmpty. Operand 13952 states and 19156 transitions. [2021-11-07 02:18:15,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 02:18:15,047 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:18:15,047 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-07 02:18:15,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:18:15,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:18:15,262 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:18:15,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:18:15,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1864090, now seen corresponding path program 1 times [2021-11-07 02:18:15,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:18:15,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [919588666] [2021-11-07 02:18:15,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:18:15,264 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:18:15,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:18:15,268 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:18:15,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 02:18:16,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:18:16,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 736 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:18:16,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:18:16,384 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 02:18:16,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:18:16,729 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 02:18:16,729 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:18:16,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [919588666] [2021-11-07 02:18:16,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [919588666] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:18:16,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:18:16,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 02:18:16,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286926244] [2021-11-07 02:18:16,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:18:16,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:18:16,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:18:16,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:18:16,732 INFO L87 Difference]: Start difference. First operand 13952 states and 19156 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 02:18:17,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:18:17,596 INFO L93 Difference]: Finished difference Result 27522 states and 37790 transitions. [2021-11-07 02:18:17,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:18:17,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 71 [2021-11-07 02:18:17,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:18:17,664 INFO L225 Difference]: With dead ends: 27522 [2021-11-07 02:18:17,664 INFO L226 Difference]: Without dead ends: 13578 [2021-11-07 02:18:17,685 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:18:17,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13578 states. [2021-11-07 02:18:18,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13578 to 13568. [2021-11-07 02:18:18,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13568 states, 13567 states have (on average 1.3730375175057123) internal successors, (18628), 13567 states have internal predecessors, (18628), 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 02:18:18,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13568 states to 13568 states and 18628 transitions. [2021-11-07 02:18:18,417 INFO L78 Accepts]: Start accepts. Automaton has 13568 states and 18628 transitions. Word has length 71 [2021-11-07 02:18:18,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:18:18,419 INFO L470 AbstractCegarLoop]: Abstraction has 13568 states and 18628 transitions. [2021-11-07 02:18:18,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 02:18:18,420 INFO L276 IsEmpty]: Start isEmpty. Operand 13568 states and 18628 transitions. [2021-11-07 02:18:18,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-07 02:18:18,446 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:18:18,446 INFO L513 BasicCegarLoop]: trace histogram [3, 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] [2021-11-07 02:18:18,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 02:18:18,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:18:18,670 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:18:18,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:18:18,671 INFO L85 PathProgramCache]: Analyzing trace with hash -778438665, now seen corresponding path program 1 times [2021-11-07 02:18:18,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:18:18,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1794448768] [2021-11-07 02:18:18,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:18:18,673 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:18:18,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:18:18,676 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:18:18,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 02:18:19,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:18:19,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 780 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:18:19,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:18:20,393 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 02:18:20,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:18:20,782 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 02:18:20,782 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:18:20,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1794448768] [2021-11-07 02:18:20,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1794448768] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:18:20,784 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:18:20,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 02:18:20,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014977875] [2021-11-07 02:18:20,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:18:20,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:18:20,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:18:20,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:18:20,787 INFO L87 Difference]: Start difference. First operand 13568 states and 18628 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 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 02:18:22,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:18:22,269 INFO L93 Difference]: Finished difference Result 40088 states and 55117 transitions. [2021-11-07 02:18:22,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:18:22,273 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 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 80 [2021-11-07 02:18:22,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:18:22,382 INFO L225 Difference]: With dead ends: 40088 [2021-11-07 02:18:22,382 INFO L226 Difference]: Without dead ends: 26528 [2021-11-07 02:18:22,415 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:18:22,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26528 states. [2021-11-07 02:18:23,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26528 to 14722. [2021-11-07 02:18:23,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14722 states, 14721 states have (on average 1.3773520820596428) internal successors, (20276), 14721 states have internal predecessors, (20276), 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 02:18:23,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14722 states to 14722 states and 20276 transitions. [2021-11-07 02:18:23,713 INFO L78 Accepts]: Start accepts. Automaton has 14722 states and 20276 transitions. Word has length 80 [2021-11-07 02:18:23,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:18:23,713 INFO L470 AbstractCegarLoop]: Abstraction has 14722 states and 20276 transitions. [2021-11-07 02:18:23,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 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 02:18:23,714 INFO L276 IsEmpty]: Start isEmpty. Operand 14722 states and 20276 transitions. [2021-11-07 02:18:23,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-07 02:18:23,740 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:18:23,741 INFO L513 BasicCegarLoop]: trace histogram [3, 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] [2021-11-07 02:18:23,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 02:18:23,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:18:23,954 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:18:23,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:18:23,954 INFO L85 PathProgramCache]: Analyzing trace with hash -348947228, now seen corresponding path program 1 times [2021-11-07 02:18:23,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:18:23,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [629780619] [2021-11-07 02:18:23,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:18:23,956 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:18:23,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:18:23,957 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:18:23,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 02:18:25,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:18:25,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:18:25,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:18:25,440 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 02:18:25,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:18:25,812 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 02:18:25,812 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:18:25,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [629780619] [2021-11-07 02:18:25,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [629780619] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:18:25,813 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:18:25,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 02:18:25,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653314211] [2021-11-07 02:18:25,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:18:25,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:18:25,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:18:25,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:18:25,815 INFO L87 Difference]: Start difference. First operand 14722 states and 20276 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 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 02:18:27,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:18:27,338 INFO L93 Difference]: Finished difference Result 44408 states and 61386 transitions. [2021-11-07 02:18:27,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:18:27,339 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 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 81 [2021-11-07 02:18:27,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:18:27,461 INFO L225 Difference]: With dead ends: 44408 [2021-11-07 02:18:27,462 INFO L226 Difference]: Without dead ends: 29716 [2021-11-07 02:18:27,498 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:18:27,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29716 states. [2021-11-07 02:18:28,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29716 to 24940. [2021-11-07 02:18:28,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24940 states, 24939 states have (on average 1.3777617386422871) internal successors, (34360), 24939 states have internal predecessors, (34360), 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 02:18:28,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24940 states to 24940 states and 34360 transitions. [2021-11-07 02:18:28,859 INFO L78 Accepts]: Start accepts. Automaton has 24940 states and 34360 transitions. Word has length 81 [2021-11-07 02:18:28,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:18:28,859 INFO L470 AbstractCegarLoop]: Abstraction has 24940 states and 34360 transitions. [2021-11-07 02:18:28,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 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 02:18:28,860 INFO L276 IsEmpty]: Start isEmpty. Operand 24940 states and 34360 transitions. [2021-11-07 02:18:28,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-07 02:18:28,882 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:18:28,883 INFO L513 BasicCegarLoop]: trace histogram [3, 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] [2021-11-07 02:18:28,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 02:18:29,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:18:29,098 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:18:29,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:18:29,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1218029686, now seen corresponding path program 1 times [2021-11-07 02:18:29,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:18:29,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1048485885] [2021-11-07 02:18:29,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:18:29,100 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:18:29,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:18:29,101 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:18:29,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 02:18:30,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:18:30,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:18:30,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:18:30,558 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 02:18:30,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:18:30,933 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 02:18:30,933 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:18:30,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1048485885] [2021-11-07 02:18:30,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1048485885] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:18:30,934 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:18:30,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 02:18:30,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078470218] [2021-11-07 02:18:30,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:18:30,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:18:30,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:18:30,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:18:30,936 INFO L87 Difference]: Start difference. First operand 24940 states and 34360 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 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 02:18:32,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:18:32,840 INFO L93 Difference]: Finished difference Result 77332 states and 106986 transitions. [2021-11-07 02:18:32,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:18:32,841 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 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 82 [2021-11-07 02:18:32,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:18:32,953 INFO L225 Difference]: With dead ends: 77332 [2021-11-07 02:18:32,953 INFO L226 Difference]: Without dead ends: 52422 [2021-11-07 02:18:32,988 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:18:33,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52422 states. [2021-11-07 02:18:35,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52422 to 43014. [2021-11-07 02:18:35,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43014 states, 43013 states have (on average 1.3781879896775393) internal successors, (59280), 43013 states have internal predecessors, (59280), 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 02:18:35,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43014 states to 43014 states and 59280 transitions. [2021-11-07 02:18:35,389 INFO L78 Accepts]: Start accepts. Automaton has 43014 states and 59280 transitions. Word has length 82 [2021-11-07 02:18:35,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:18:35,390 INFO L470 AbstractCegarLoop]: Abstraction has 43014 states and 59280 transitions. [2021-11-07 02:18:35,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 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 02:18:35,390 INFO L276 IsEmpty]: Start isEmpty. Operand 43014 states and 59280 transitions. [2021-11-07 02:18:35,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-07 02:18:35,408 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:18:35,408 INFO L513 BasicCegarLoop]: trace histogram [3, 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] [2021-11-07 02:18:35,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 02:18:35,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:18:35,622 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:18:35,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:18:35,623 INFO L85 PathProgramCache]: Analyzing trace with hash -607649277, now seen corresponding path program 1 times [2021-11-07 02:18:35,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:18:35,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2049687254] [2021-11-07 02:18:35,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:18:35,624 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:18:35,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:18:35,625 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:18:35,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 02:18:36,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:18:36,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:18:36,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:18:36,982 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 02:18:36,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:18:37,288 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 02:18:37,288 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:18:37,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2049687254] [2021-11-07 02:18:37,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2049687254] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:18:37,289 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:18:37,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 02:18:37,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139244637] [2021-11-07 02:18:37,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:18:37,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:18:37,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:18:37,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:18:37,291 INFO L87 Difference]: Start difference. First operand 43014 states and 59280 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 3 states have internal predecessors, (82), 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 02:18:40,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:18:40,653 INFO L93 Difference]: Finished difference Result 135696 states and 187902 transitions. [2021-11-07 02:18:40,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:18:40,654 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 3 states have internal predecessors, (82), 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 83 [2021-11-07 02:18:40,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:18:40,892 INFO L225 Difference]: With dead ends: 135696 [2021-11-07 02:18:40,892 INFO L226 Difference]: Without dead ends: 92712 [2021-11-07 02:18:40,966 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:18:41,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92712 states. [2021-11-07 02:18:45,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92712 to 74096. [2021-11-07 02:18:45,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74096 states, 74095 states have (on average 1.3786625278358864) internal successors, (102152), 74095 states have internal predecessors, (102152), 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 02:18:45,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74096 states to 74096 states and 102152 transitions. [2021-11-07 02:18:45,293 INFO L78 Accepts]: Start accepts. Automaton has 74096 states and 102152 transitions. Word has length 83 [2021-11-07 02:18:45,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:18:45,294 INFO L470 AbstractCegarLoop]: Abstraction has 74096 states and 102152 transitions. [2021-11-07 02:18:45,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 3 states have internal predecessors, (82), 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 02:18:45,294 INFO L276 IsEmpty]: Start isEmpty. Operand 74096 states and 102152 transitions. [2021-11-07 02:18:45,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-07 02:18:45,303 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:18:45,303 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 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] [2021-11-07 02:18:45,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 02:18:45,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:18:45,526 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:18:45,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:18:45,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1111406881, now seen corresponding path program 1 times [2021-11-07 02:18:45,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:18:45,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [442681456] [2021-11-07 02:18:45,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:18:45,528 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:18:45,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:18:45,529 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:18:45,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cb2247e-a382-4601-8beb-057b43e499fd/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 02:18:46,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:18:46,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:18:46,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:18:46,853 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-07 02:18:46,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:18:47,110 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-07 02:18:47,110 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:18:47,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [442681456] [2021-11-07 02:18:47,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [442681456] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:18:47,111 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:18:47,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:18:47,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454759350] [2021-11-07 02:18:47,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:18:47,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:18:47,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:18:47,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:18:47,114 INFO L87 Difference]: Start difference. First operand 74096 states and 102152 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 02:18:55,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:18:55,170 INFO L93 Difference]: Finished difference Result 287934 states and 399289 transitions. [2021-11-07 02:18:55,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:18:55,171 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 84 [2021-11-07 02:18:55,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:18:55,772 INFO L225 Difference]: With dead ends: 287934 [2021-11-07 02:18:55,772 INFO L226 Difference]: Without dead ends: 213868 [2021-11-07 02:18:55,876 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 164 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 02:18:56,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213868 states. [2021-11-07 02:19:01,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213868 to 79112. [2021-11-07 02:19:01,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79112 states, 79111 states have (on average 1.3652210185688463) internal successors, (108004), 79111 states have internal predecessors, (108004), 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 02:19:01,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79112 states to 79112 states and 108004 transitions. [2021-11-07 02:19:01,434 INFO L78 Accepts]: Start accepts. Automaton has 79112 states and 108004 transitions. Word has length 84 [2021-11-07 02:19:01,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:19:01,434 INFO L470 AbstractCegarLoop]: Abstraction has 79112 states and 108004 transitions. [2021-11-07 02:19:01,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 02:19:01,435 INFO L276 IsEmpty]: Start isEmpty. Operand 79112 states and 108004 transitions.