./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1d8908adfa5a1758f016a2fa64af2c05db2b3cc5d1fb9ac5b8aa70e5689b8434 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:40:15,442 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:40:15,446 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:40:15,493 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:40:15,493 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:40:15,499 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:40:15,502 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:40:15,506 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:40:15,511 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:40:15,516 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:40:15,517 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:40:15,519 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:40:15,519 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:40:15,521 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:40:15,523 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:40:15,526 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:40:15,527 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:40:15,528 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:40:15,532 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:40:15,540 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:40:15,542 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:40:15,543 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:40:15,547 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:40:15,548 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:40:15,552 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:40:15,552 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:40:15,552 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:40:15,554 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:40:15,555 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:40:15,556 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:40:15,557 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:40:15,557 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:40:15,560 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:40:15,561 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:40:15,562 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:40:15,562 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:40:15,563 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:40:15,563 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:40:15,564 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:40:15,564 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:40:15,565 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:40:15,566 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 05:40:15,609 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:40:15,609 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:40:15,611 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:40:15,611 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:40:15,612 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:40:15,612 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:40:15,612 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 05:40:15,612 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:40:15,612 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:40:15,613 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 05:40:15,614 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 05:40:15,614 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:40:15,614 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 05:40:15,614 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 05:40:15,615 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 05:40:15,615 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:40:15,616 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:40:15,616 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:40:15,616 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:40:15,616 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:40:15,617 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:40:15,617 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:40:15,617 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:40:15,617 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:40:15,617 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:40:15,618 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:40:15,618 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:40:15,618 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:40:15,618 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:40:15,620 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:40:15,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:40:15,620 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:40:15,621 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:40:15,621 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:40:15,621 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 05:40:15,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 05:40:15,622 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:40:15,622 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:40:15,622 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:40:15,622 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_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d8908adfa5a1758f016a2fa64af2c05db2b3cc5d1fb9ac5b8aa70e5689b8434 [2021-11-03 05:40:15,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:40:15,918 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:40:15,920 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:40:15,921 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:40:15,922 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:40:15,923 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c [2021-11-03 05:40:15,995 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/data/2d6ab56ea/7a31e3edeb954f6cac8f2cef1f164021/FLAG09050d602 [2021-11-03 05:40:16,714 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:40:16,715 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c [2021-11-03 05:40:16,741 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/data/2d6ab56ea/7a31e3edeb954f6cac8f2cef1f164021/FLAG09050d602 [2021-11-03 05:40:16,908 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/data/2d6ab56ea/7a31e3edeb954f6cac8f2cef1f164021 [2021-11-03 05:40:16,910 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:40:16,913 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:40:16,928 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:40:16,928 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:40:16,931 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:40:16,931 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:40:16" (1/1) ... [2021-11-03 05:40:16,932 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1421d91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:40:16, skipping insertion in model container [2021-11-03 05:40:16,932 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:40:16" (1/1) ... [2021-11-03 05:40:16,939 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:40:17,052 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:40:17,702 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_88fad09e-d4d1-4077-8924-3c15190f8e2c/sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c[72622,72635] [2021-11-03 05:40:17,711 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:40:17,724 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) [2021-11-03 05:40:17,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@662323ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:40:17, skipping insertion in model container [2021-11-03 05:40:17,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:40:17,725 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 05:40:17,727 INFO L168 Benchmark]: Toolchain (without parser) took 812.76 ms. Allocated memory is still 107.0 MB. Free memory was 66.5 MB in the beginning and 65.9 MB in the end (delta: 649.7 kB). Peak memory consumption was 10.9 MB. Max. memory is 16.1 GB. [2021-11-03 05:40:17,728 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 107.0 MB. Free memory is still 86.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:40:17,729 INFO L168 Benchmark]: CACSL2BoogieTranslator took 796.99 ms. Allocated memory is still 107.0 MB. Free memory was 66.3 MB in the beginning and 65.9 MB in the end (delta: 437.4 kB). Peak memory consumption was 10.9 MB. Max. memory is 16.1 GB. [2021-11-03 05:40:17,730 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 107.0 MB. Free memory is still 86.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 796.99 ms. Allocated memory is still 107.0 MB. Free memory was 66.3 MB in the beginning and 65.9 MB in the end (delta: 437.4 kB). Peak memory consumption was 10.9 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 3118]: 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_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1d8908adfa5a1758f016a2fa64af2c05db2b3cc5d1fb9ac5b8aa70e5689b8434 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:40:19,937 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:40:19,940 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:40:19,987 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:40:19,988 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:40:19,992 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:40:19,994 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:40:19,998 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:40:20,002 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:40:20,009 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:40:20,010 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:40:20,012 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:40:20,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:40:20,015 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:40:20,017 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:40:20,021 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:40:20,022 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:40:20,024 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:40:20,026 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:40:20,033 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:40:20,035 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:40:20,036 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:40:20,039 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:40:20,041 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:40:20,050 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:40:20,050 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:40:20,050 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:40:20,052 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:40:20,053 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:40:20,054 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:40:20,054 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:40:20,055 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:40:20,057 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:40:20,058 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:40:20,082 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:40:20,082 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:40:20,083 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:40:20,083 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:40:20,083 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:40:20,085 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:40:20,086 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:40:20,091 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 05:40:20,133 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:40:20,133 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:40:20,134 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:40:20,135 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:40:20,135 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:40:20,135 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:40:20,135 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:40:20,135 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:40:20,136 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:40:20,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:40:20,138 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:40:20,138 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:40:20,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:40:20,138 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:40:20,139 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:40:20,139 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:40:20,139 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:40:20,139 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 05:40:20,139 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 05:40:20,140 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:40:20,140 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:40:20,140 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:40:20,140 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:40:20,140 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:40:20,141 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 05:40:20,141 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:40:20,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:40:20,141 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:40:20,141 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:40:20,141 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:40:20,142 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 05:40:20,142 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 05:40:20,142 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:40:20,142 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:40:20,143 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:40:20,143 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_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d8908adfa5a1758f016a2fa64af2c05db2b3cc5d1fb9ac5b8aa70e5689b8434 [2021-11-03 05:40:20,539 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:40:20,560 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:40:20,562 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:40:20,563 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:40:20,564 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:40:20,565 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c [2021-11-03 05:40:20,635 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/data/674ea2896/a5a156c4f1714d30b76a6036198a851a/FLAGe8512f2fb [2021-11-03 05:40:21,374 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:40:21,375 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c [2021-11-03 05:40:21,412 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/data/674ea2896/a5a156c4f1714d30b76a6036198a851a/FLAGe8512f2fb [2021-11-03 05:40:21,605 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/data/674ea2896/a5a156c4f1714d30b76a6036198a851a [2021-11-03 05:40:21,607 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:40:21,609 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:40:21,612 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:40:21,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:40:21,615 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:40:21,616 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:40:21" (1/1) ... [2021-11-03 05:40:21,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4720ebf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:40:21, skipping insertion in model container [2021-11-03 05:40:21,617 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:40:21" (1/1) ... [2021-11-03 05:40:21,626 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:40:21,734 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:40:22,386 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_88fad09e-d4d1-4077-8924-3c15190f8e2c/sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c[72622,72635] [2021-11-03 05:40:22,393 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:40:22,412 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 05:40:22,447 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:40:22,621 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_88fad09e-d4d1-4077-8924-3c15190f8e2c/sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c[72622,72635] [2021-11-03 05:40:22,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:40:22,629 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:40:22,772 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_88fad09e-d4d1-4077-8924-3c15190f8e2c/sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c[72622,72635] [2021-11-03 05:40:22,773 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:40:22,830 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:40:22,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:40:22 WrapperNode [2021-11-03 05:40:22,831 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:40:22,832 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:40:22,833 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:40:22,833 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:40:22,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:40:22" (1/1) ... [2021-11-03 05:40:22,905 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:40:22" (1/1) ... [2021-11-03 05:40:29,000 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:40:29,004 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:40:29,004 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:40:29,004 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:40:29,012 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:40:22" (1/1) ... [2021-11-03 05:40:29,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:40:22" (1/1) ... [2021-11-03 05:40:29,840 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:40:22" (1/1) ... [2021-11-03 05:40:29,841 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:40:22" (1/1) ... [2021-11-03 05:40:31,732 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:40:22" (1/1) ... [2021-11-03 05:40:32,354 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:40:22" (1/1) ... [2021-11-03 05:40:32,714 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:40:22" (1/1) ... [2021-11-03 05:40:33,670 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:40:33,672 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:40:33,672 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:40:33,673 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:40:33,674 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:40:22" (1/1) ... [2021-11-03 05:40:33,681 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:40:33,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:40:33,703 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:40:33,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:40:33,746 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-03 05:40:33,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:40:33,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 05:40:33,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:40:33,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:41:34,825 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:41:34,826 INFO L299 CfgBuilder]: Removed 36507 assume(true) statements. [2021-11-03 05:41:34,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:41:34 BoogieIcfgContainer [2021-11-03 05:41:34,858 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:41:34,860 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:41:34,860 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:41:34,863 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:41:34,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:40:21" (1/3) ... [2021-11-03 05:41:34,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75900188 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:41:34, skipping insertion in model container [2021-11-03 05:41:34,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:40:22" (2/3) ... [2021-11-03 05:41:34,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75900188 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:41:34, skipping insertion in model container [2021-11-03 05:41:34,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:41:34" (3/3) ... [2021-11-03 05:41:34,866 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec7_productSimulator.cil.c [2021-11-03 05:41:34,872 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:41:34,872 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 64 error locations. [2021-11-03 05:41:35,032 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:41:35,038 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 [2021-11-03 05:41:35,039 INFO L340 AbstractCegarLoop]: Starting to check reachability of 64 error locations. [2021-11-03 05:41:35,776 INFO L276 IsEmpty]: Start isEmpty. Operand has 35284 states, 35219 states have (on average 1.6053550640279395) internal successors, (56539), 35283 states have internal predecessors, (56539), 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) [2021-11-03 05:41:35,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-03 05:41:35,809 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:41:35,810 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:41:35,810 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-03 05:41:35,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:41:35,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1708544396, now seen corresponding path program 1 times [2021-11-03 05:41:35,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:41:35,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1483420920] [2021-11-03 05:41:35,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:41:35,834 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:41:35,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:41:35,837 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:41:35,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 05:41:36,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:41:36,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 05:41:36,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:41:36,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:41:36,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:41:36,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:41:36,619 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:41:36,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1483420920] [2021-11-03 05:41:36,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1483420920] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:41:36,620 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:41:36,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 05:41:36,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397022014] [2021-11-03 05:41:36,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 05:41:36,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:41:36,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 05:41:36,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:41:36,739 INFO L87 Difference]: Start difference. First operand has 35284 states, 35219 states have (on average 1.6053550640279395) internal successors, (56539), 35283 states have internal predecessors, (56539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 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) [2021-11-03 05:41:38,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:41:38,264 INFO L93 Difference]: Finished difference Result 70233 states and 112466 transitions. [2021-11-03 05:41:38,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 05:41:38,266 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-03 05:41:38,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:41:38,532 INFO L225 Difference]: With dead ends: 70233 [2021-11-03 05:41:38,532 INFO L226 Difference]: Without dead ends: 23088 [2021-11-03 05:41:38,611 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:41:38,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23088 states. [2021-11-03 05:41:39,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23088 to 23088. [2021-11-03 05:41:39,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23088 states, 23024 states have (on average 1.6051077136900624) internal successors, (36956), 23087 states have internal predecessors, (36956), 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) [2021-11-03 05:41:39,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23088 states to 23088 states and 36956 transitions. [2021-11-03 05:41:39,521 INFO L78 Accepts]: Start accepts. Automaton has 23088 states and 36956 transitions. Word has length 50 [2021-11-03 05:41:39,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:41:39,522 INFO L470 AbstractCegarLoop]: Abstraction has 23088 states and 36956 transitions. [2021-11-03 05:41:39,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 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) [2021-11-03 05:41:39,523 INFO L276 IsEmpty]: Start isEmpty. Operand 23088 states and 36956 transitions. [2021-11-03 05:41:39,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-03 05:41:39,530 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:41:39,530 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:41:39,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 05:41:39,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:41:39,744 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-03 05:41:39,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:41:39,745 INFO L85 PathProgramCache]: Analyzing trace with hash -561131367, now seen corresponding path program 1 times [2021-11-03 05:41:39,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:41:39,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2063396506] [2021-11-03 05:41:39,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:41:39,747 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:41:39,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:41:39,749 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:41:39,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 05:41:40,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:41:40,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:41:40,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:41:40,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:41:40,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:41:40,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:41:40,477 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:41:40,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2063396506] [2021-11-03 05:41:40,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2063396506] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:41:40,478 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:41:40,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 05:41:40,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129655875] [2021-11-03 05:41:40,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:41:40,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:41:40,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:41:40,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:41:40,489 INFO L87 Difference]: Start difference. First operand 23088 states and 36956 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2021-11-03 05:41:41,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:41:41,963 INFO L93 Difference]: Finished difference Result 46151 states and 73874 transitions. [2021-11-03 05:41:41,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:41:41,964 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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 51 [2021-11-03 05:41:41,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:41:42,044 INFO L225 Difference]: With dead ends: 46151 [2021-11-03 05:41:42,045 INFO L226 Difference]: Without dead ends: 23088 [2021-11-03 05:41:42,102 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 05:41:42,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23088 states. [2021-11-03 05:41:42,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23088 to 23088. [2021-11-03 05:41:42,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23088 states, 23024 states have (on average 1.604803683113273) internal successors, (36949), 23087 states have internal predecessors, (36949), 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) [2021-11-03 05:41:42,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23088 states to 23088 states and 36949 transitions. [2021-11-03 05:41:42,692 INFO L78 Accepts]: Start accepts. Automaton has 23088 states and 36949 transitions. Word has length 51 [2021-11-03 05:41:42,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:41:42,693 INFO L470 AbstractCegarLoop]: Abstraction has 23088 states and 36949 transitions. [2021-11-03 05:41:42,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2021-11-03 05:41:42,693 INFO L276 IsEmpty]: Start isEmpty. Operand 23088 states and 36949 transitions. [2021-11-03 05:41:42,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-03 05:41:42,705 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:41:42,705 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:41:42,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 05:41:42,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:41:42,921 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-03 05:41:42,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:41:42,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1165599801, now seen corresponding path program 1 times [2021-11-03 05:41:42,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:41:42,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1169346791] [2021-11-03 05:41:42,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:41:42,924 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:41:42,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:41:42,925 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:41:42,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 05:41:43,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:41:43,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:41:43,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:41:43,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:41:43,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:41:43,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:41:43,715 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:41:43,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1169346791] [2021-11-03 05:41:43,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1169346791] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:41:43,715 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:41:43,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:41:43,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832766735] [2021-11-03 05:41:43,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:41:43,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:41:43,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:41:43,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:41:43,717 INFO L87 Difference]: Start difference. First operand 23088 states and 36949 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:47,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:41:47,004 INFO L93 Difference]: Finished difference Result 32954 states and 52951 transitions. [2021-11-03 05:41:47,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:41:47,004 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-03 05:41:47,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:41:47,028 INFO L225 Difference]: With dead ends: 32954 [2021-11-03 05:41:47,029 INFO L226 Difference]: Without dead ends: 9888 [2021-11-03 05:41:47,064 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:41:47,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9888 states. [2021-11-03 05:41:47,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9888 to 9888. [2021-11-03 05:41:47,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9888 states, 9824 states have (on average 1.623371335504886) internal successors, (15948), 9887 states have internal predecessors, (15948), 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) [2021-11-03 05:41:47,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9888 states to 9888 states and 15948 transitions. [2021-11-03 05:41:47,354 INFO L78 Accepts]: Start accepts. Automaton has 9888 states and 15948 transitions. Word has length 56 [2021-11-03 05:41:47,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:41:47,355 INFO L470 AbstractCegarLoop]: Abstraction has 9888 states and 15948 transitions. [2021-11-03 05:41:47,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:47,355 INFO L276 IsEmpty]: Start isEmpty. Operand 9888 states and 15948 transitions. [2021-11-03 05:41:47,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-03 05:41:47,357 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:41:47,357 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:41:47,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 05:41:47,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:41:47,576 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-03 05:41:47,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:41:47,577 INFO L85 PathProgramCache]: Analyzing trace with hash 382534275, now seen corresponding path program 1 times [2021-11-03 05:41:47,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:41:47,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [510625661] [2021-11-03 05:41:47,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:41:47,579 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:41:47,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:41:47,580 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:41:47,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 05:41:48,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:41:48,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:41:48,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:41:48,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:41:48,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:41:48,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:41:48,357 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:41:48,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [510625661] [2021-11-03 05:41:48,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [510625661] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:41:48,358 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:41:48,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 05:41:48,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231093202] [2021-11-03 05:41:48,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:41:48,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:41:48,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:41:48,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:41:48,360 INFO L87 Difference]: Start difference. First operand 9888 states and 15948 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:48,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:41:48,926 INFO L93 Difference]: Finished difference Result 19786 states and 32027 transitions. [2021-11-03 05:41:48,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:41:48,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-03 05:41:48,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:41:48,951 INFO L225 Difference]: With dead ends: 19786 [2021-11-03 05:41:48,951 INFO L226 Difference]: Without dead ends: 9918 [2021-11-03 05:41:48,966 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:41:48,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9918 states. [2021-11-03 05:41:49,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9918 to 9734. [2021-11-03 05:41:49,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9734 states, 9670 states have (on average 1.6336091003102378) internal successors, (15797), 9733 states have internal predecessors, (15797), 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) [2021-11-03 05:41:49,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9734 states to 9734 states and 15797 transitions. [2021-11-03 05:41:49,444 INFO L78 Accepts]: Start accepts. Automaton has 9734 states and 15797 transitions. Word has length 57 [2021-11-03 05:41:49,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:41:49,446 INFO L470 AbstractCegarLoop]: Abstraction has 9734 states and 15797 transitions. [2021-11-03 05:41:49,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:41:49,447 INFO L276 IsEmpty]: Start isEmpty. Operand 9734 states and 15797 transitions. [2021-11-03 05:41:49,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-03 05:41:49,451 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:41:49,451 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:41:49,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 05:41:49,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:41:49,665 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-03 05:41:49,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:41:49,666 INFO L85 PathProgramCache]: Analyzing trace with hash 576584458, now seen corresponding path program 1 times [2021-11-03 05:41:49,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:41:49,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [3737002] [2021-11-03 05:41:49,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:41:49,668 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:41:49,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:41:49,669 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:41:49,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 05:41:50,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:41:50,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:41:50,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:41:50,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:41:50,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:41:50,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:41:50,496 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:41:50,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [3737002] [2021-11-03 05:41:50,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [3737002] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:41:50,497 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:41:50,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 05:41:50,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676498072] [2021-11-03 05:41:50,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:41:50,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:41:50,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:41:50,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:41:50,498 INFO L87 Difference]: Start difference. First operand 9734 states and 15797 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2021-11-03 05:41:52,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:41:52,781 INFO L93 Difference]: Finished difference Result 9918 states and 16076 transitions. [2021-11-03 05:41:52,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:41:52,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 58 [2021-11-03 05:41:52,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:41:52,792 INFO L225 Difference]: With dead ends: 9918 [2021-11-03 05:41:52,792 INFO L226 Difference]: Without dead ends: 4250 [2021-11-03 05:41:52,800 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:41:52,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4250 states. [2021-11-03 05:41:52,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4250 to 4250. [2021-11-03 05:41:52,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4250 states, 4218 states have (on average 1.635846372688478) internal successors, (6900), 4249 states have internal predecessors, (6900), 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) [2021-11-03 05:41:52,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4250 states to 4250 states and 6900 transitions. [2021-11-03 05:41:52,928 INFO L78 Accepts]: Start accepts. Automaton has 4250 states and 6900 transitions. Word has length 58 [2021-11-03 05:41:52,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:41:52,930 INFO L470 AbstractCegarLoop]: Abstraction has 4250 states and 6900 transitions. [2021-11-03 05:41:52,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2021-11-03 05:41:52,930 INFO L276 IsEmpty]: Start isEmpty. Operand 4250 states and 6900 transitions. [2021-11-03 05:41:52,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-03 05:41:52,932 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:41:52,932 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:41:52,946 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-03 05:41:53,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:41:53,147 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-03 05:41:53,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:41:53,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1383645699, now seen corresponding path program 1 times [2021-11-03 05:41:53,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:41:53,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1412568726] [2021-11-03 05:41:53,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:41:53,151 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:41:53,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:41:53,152 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:41:53,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 05:41:53,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:41:53,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:41:53,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:41:53,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:41:53,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:41:53,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:41:53,992 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:41:53,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1412568726] [2021-11-03 05:41:53,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1412568726] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:41:53,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:41:53,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 05:41:53,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905549742] [2021-11-03 05:41:53,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:41:53,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:41:53,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:41:53,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:41:53,994 INFO L87 Difference]: Start difference. First operand 4250 states and 6900 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) [2021-11-03 05:41:56,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:41:56,238 INFO L93 Difference]: Finished difference Result 8461 states and 13742 transitions. [2021-11-03 05:41:56,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:41:56,239 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 63 [2021-11-03 05:41:56,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:41:56,249 INFO L225 Difference]: With dead ends: 8461 [2021-11-03 05:41:56,249 INFO L226 Difference]: Without dead ends: 4247 [2021-11-03 05:41:56,255 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:41:56,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4247 states. [2021-11-03 05:41:56,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4247 to 4241. [2021-11-03 05:41:56,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4241 states, 4209 states have (on average 1.6324542646709432) internal successors, (6871), 4240 states have internal predecessors, (6871), 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) [2021-11-03 05:41:56,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4241 states to 4241 states and 6871 transitions. [2021-11-03 05:41:56,395 INFO L78 Accepts]: Start accepts. Automaton has 4241 states and 6871 transitions. Word has length 63 [2021-11-03 05:41:56,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:41:56,395 INFO L470 AbstractCegarLoop]: Abstraction has 4241 states and 6871 transitions. [2021-11-03 05:41:56,395 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) [2021-11-03 05:41:56,396 INFO L276 IsEmpty]: Start isEmpty. Operand 4241 states and 6871 transitions. [2021-11-03 05:41:56,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-03 05:41:56,397 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:41:56,397 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:41:56,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 05:41:56,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:41:56,616 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-03 05:41:56,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:41:56,617 INFO L85 PathProgramCache]: Analyzing trace with hash -823390330, now seen corresponding path program 1 times [2021-11-03 05:41:56,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:41:56,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1513833352] [2021-11-03 05:41:56,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:41:56,618 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:41:56,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:41:56,619 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:41:56,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 05:41:57,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:41:57,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-03 05:41:57,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:41:57,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:41:57,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:41:57,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:41:57,576 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:41:57,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1513833352] [2021-11-03 05:41:57,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1513833352] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:41:57,577 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:41:57,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 05:41:57,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294136550] [2021-11-03 05:41:57,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:41:57,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:41:57,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:41:57,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:41:57,580 INFO L87 Difference]: Start difference. First operand 4241 states and 6871 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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) [2021-11-03 05:41:58,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:41:58,383 INFO L93 Difference]: Finished difference Result 16835 states and 27313 transitions. [2021-11-03 05:41:58,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 05:41:58,384 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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 69 [2021-11-03 05:41:58,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:41:58,416 INFO L225 Difference]: With dead ends: 16835 [2021-11-03 05:41:58,417 INFO L226 Difference]: Without dead ends: 12634 [2021-11-03 05:41:58,426 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:41:58,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12634 states. [2021-11-03 05:41:58,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12634 to 4240. [2021-11-03 05:41:58,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4240 states, 4208 states have (on average 1.6318916349809887) internal successors, (6867), 4239 states have internal predecessors, (6867), 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) [2021-11-03 05:41:58,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4240 states to 4240 states and 6867 transitions. [2021-11-03 05:41:58,681 INFO L78 Accepts]: Start accepts. Automaton has 4240 states and 6867 transitions. Word has length 69 [2021-11-03 05:41:58,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:41:58,682 INFO L470 AbstractCegarLoop]: Abstraction has 4240 states and 6867 transitions. [2021-11-03 05:41:58,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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) [2021-11-03 05:41:58,682 INFO L276 IsEmpty]: Start isEmpty. Operand 4240 states and 6867 transitions. [2021-11-03 05:41:58,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-03 05:41:58,684 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:41:58,684 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:41:58,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 05:41:58,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:41:58,898 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-03 05:41:58,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:41:58,899 INFO L85 PathProgramCache]: Analyzing trace with hash -2100340719, now seen corresponding path program 1 times [2021-11-03 05:41:58,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:41:58,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [275940653] [2021-11-03 05:41:58,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:41:58,900 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:41:58,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:41:58,905 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:41:58,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 05:41:59,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:41:59,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 05:41:59,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:41:59,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:41:59,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:41:59,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:41:59,836 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:41:59,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [275940653] [2021-11-03 05:41:59,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [275940653] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:41:59,836 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:41:59,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 05:41:59,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878515485] [2021-11-03 05:41:59,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:41:59,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:41:59,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:41:59,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:41:59,838 INFO L87 Difference]: Start difference. First operand 4240 states and 6867 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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) [2021-11-03 05:42:00,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:42:00,889 INFO L93 Difference]: Finished difference Result 16802 states and 27244 transitions. [2021-11-03 05:42:00,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 05:42:00,891 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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 70 [2021-11-03 05:42:00,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:42:00,922 INFO L225 Difference]: With dead ends: 16802 [2021-11-03 05:42:00,922 INFO L226 Difference]: Without dead ends: 12605 [2021-11-03 05:42:00,928 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-11-03 05:42:00,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12605 states. [2021-11-03 05:42:01,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12605 to 4239. [2021-11-03 05:42:01,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4239 states, 4207 states have (on average 1.6313287378179224) internal successors, (6863), 4238 states have internal predecessors, (6863), 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) [2021-11-03 05:42:01,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4239 states to 4239 states and 6863 transitions. [2021-11-03 05:42:01,234 INFO L78 Accepts]: Start accepts. Automaton has 4239 states and 6863 transitions. Word has length 70 [2021-11-03 05:42:01,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:42:01,235 INFO L470 AbstractCegarLoop]: Abstraction has 4239 states and 6863 transitions. [2021-11-03 05:42:01,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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) [2021-11-03 05:42:01,235 INFO L276 IsEmpty]: Start isEmpty. Operand 4239 states and 6863 transitions. [2021-11-03 05:42:01,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-03 05:42:01,241 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:42:01,241 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:42:01,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 05:42:01,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:42:01,457 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-03 05:42:01,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:42:01,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1889326951, now seen corresponding path program 1 times [2021-11-03 05:42:01,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:42:01,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [977004677] [2021-11-03 05:42:01,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:42:01,458 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:42:01,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:42:01,459 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:42:01,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 05:42:02,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:42:02,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-03 05:42:02,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:42:02,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:42:02,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:42:02,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:42:02,357 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:42:02,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [977004677] [2021-11-03 05:42:02,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [977004677] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:42:02,357 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:42:02,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 05:42:02,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651280663] [2021-11-03 05:42:02,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:42:02,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:42:02,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:42:02,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:42:02,359 INFO L87 Difference]: Start difference. First operand 4239 states and 6863 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:02,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:42:02,710 INFO L93 Difference]: Finished difference Result 8442 states and 13684 transitions. [2021-11-03 05:42:02,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 05:42:02,711 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-03 05:42:02,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:42:02,723 INFO L225 Difference]: With dead ends: 8442 [2021-11-03 05:42:02,723 INFO L226 Difference]: Without dead ends: 4251 [2021-11-03 05:42:02,729 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:42:02,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4251 states. [2021-11-03 05:42:03,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4251 to 4239. [2021-11-03 05:42:03,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4239 states, 4207 states have (on average 1.6306156405990018) internal successors, (6860), 4238 states have internal predecessors, (6860), 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) [2021-11-03 05:42:03,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4239 states to 4239 states and 6860 transitions. [2021-11-03 05:42:03,069 INFO L78 Accepts]: Start accepts. Automaton has 4239 states and 6860 transitions. Word has length 71 [2021-11-03 05:42:03,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:42:03,069 INFO L470 AbstractCegarLoop]: Abstraction has 4239 states and 6860 transitions. [2021-11-03 05:42:03,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:03,070 INFO L276 IsEmpty]: Start isEmpty. Operand 4239 states and 6860 transitions. [2021-11-03 05:42:03,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-03 05:42:03,074 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:42:03,074 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:42:03,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 05:42:03,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:42:03,289 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-03 05:42:03,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:42:03,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1078361022, now seen corresponding path program 1 times [2021-11-03 05:42:03,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:42:03,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2143151687] [2021-11-03 05:42:03,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:42:03,290 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:42:03,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:42:03,292 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:42:03,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 05:42:03,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:42:03,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 05:42:03,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:42:04,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:42:04,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:42:04,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:42:04,209 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:42:04,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2143151687] [2021-11-03 05:42:04,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2143151687] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:42:04,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:42:04,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 05:42:04,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955121452] [2021-11-03 05:42:04,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:42:04,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:42:04,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:42:04,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:42:04,212 INFO L87 Difference]: Start difference. First operand 4239 states and 6860 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 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) [2021-11-03 05:42:05,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:42:05,173 INFO L93 Difference]: Finished difference Result 16788 states and 27218 transitions. [2021-11-03 05:42:05,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 05:42:05,174 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 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 73 [2021-11-03 05:42:05,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:42:05,199 INFO L225 Difference]: With dead ends: 16788 [2021-11-03 05:42:05,199 INFO L226 Difference]: Without dead ends: 12601 [2021-11-03 05:42:05,208 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-11-03 05:42:05,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12601 states. [2021-11-03 05:42:05,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12601 to 4239. [2021-11-03 05:42:05,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4239 states, 4207 states have (on average 1.629902543380081) internal successors, (6857), 4238 states have internal predecessors, (6857), 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) [2021-11-03 05:42:05,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4239 states to 4239 states and 6857 transitions. [2021-11-03 05:42:05,656 INFO L78 Accepts]: Start accepts. Automaton has 4239 states and 6857 transitions. Word has length 73 [2021-11-03 05:42:05,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:42:05,656 INFO L470 AbstractCegarLoop]: Abstraction has 4239 states and 6857 transitions. [2021-11-03 05:42:05,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 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) [2021-11-03 05:42:05,657 INFO L276 IsEmpty]: Start isEmpty. Operand 4239 states and 6857 transitions. [2021-11-03 05:42:05,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-03 05:42:05,658 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:42:05,659 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:42:05,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 05:42:05,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:42:05,872 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-03 05:42:05,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:42:05,873 INFO L85 PathProgramCache]: Analyzing trace with hash 692937859, now seen corresponding path program 1 times [2021-11-03 05:42:05,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:42:05,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1811518767] [2021-11-03 05:42:05,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:42:05,874 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:42:05,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:42:05,874 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:42:05,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 05:42:06,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:42:06,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:42:06,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:42:06,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:42:06,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:42:06,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:42:06,707 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:42:06,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1811518767] [2021-11-03 05:42:06,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1811518767] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:42:06,707 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:42:06,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:42:06,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544578585] [2021-11-03 05:42:06,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:42:06,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:42:06,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:42:06,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:42:06,710 INFO L87 Difference]: Start difference. First operand 4239 states and 6857 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:07,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:42:07,204 INFO L93 Difference]: Finished difference Result 12341 states and 19955 transitions. [2021-11-03 05:42:07,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:42:07,205 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-03 05:42:07,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:42:07,220 INFO L225 Difference]: With dead ends: 12341 [2021-11-03 05:42:07,220 INFO L226 Difference]: Without dead ends: 8426 [2021-11-03 05:42:07,226 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:42:07,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8426 states. [2021-11-03 05:42:07,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8426 to 4511. [2021-11-03 05:42:07,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4511 states, 4479 states have (on average 1.6412145568207188) internal successors, (7351), 4510 states have internal predecessors, (7351), 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) [2021-11-03 05:42:07,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4511 states to 4511 states and 7351 transitions. [2021-11-03 05:42:07,609 INFO L78 Accepts]: Start accepts. Automaton has 4511 states and 7351 transitions. Word has length 75 [2021-11-03 05:42:07,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:42:07,610 INFO L470 AbstractCegarLoop]: Abstraction has 4511 states and 7351 transitions. [2021-11-03 05:42:07,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:07,610 INFO L276 IsEmpty]: Start isEmpty. Operand 4511 states and 7351 transitions. [2021-11-03 05:42:07,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-03 05:42:07,613 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:42:07,613 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:42:07,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 05:42:07,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:42:07,820 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-03 05:42:07,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:42:07,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1630519786, now seen corresponding path program 1 times [2021-11-03 05:42:07,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:42:07,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1044111177] [2021-11-03 05:42:07,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:42:07,821 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:42:07,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:42:07,822 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:42:07,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-03 05:42:08,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:42:08,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:42:08,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:42:08,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:42:08,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:42:08,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:42:08,736 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:42:08,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1044111177] [2021-11-03 05:42:08,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1044111177] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:42:08,736 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:42:08,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 05:42:08,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124424412] [2021-11-03 05:42:08,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:42:08,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:42:08,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:42:08,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:42:08,737 INFO L87 Difference]: Start difference. First operand 4511 states and 7351 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2021-11-03 05:42:09,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:42:09,227 INFO L93 Difference]: Finished difference Result 13045 states and 21236 transitions. [2021-11-03 05:42:09,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:42:09,227 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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 87 [2021-11-03 05:42:09,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:42:09,238 INFO L225 Difference]: With dead ends: 13045 [2021-11-03 05:42:09,238 INFO L226 Difference]: Without dead ends: 8645 [2021-11-03 05:42:09,245 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:42:09,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8645 states. [2021-11-03 05:42:09,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8645 to 4730. [2021-11-03 05:42:09,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4730 states, 4698 states have (on average 1.6489995742869306) internal successors, (7747), 4729 states have internal predecessors, (7747), 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) [2021-11-03 05:42:09,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4730 states to 4730 states and 7747 transitions. [2021-11-03 05:42:09,641 INFO L78 Accepts]: Start accepts. Automaton has 4730 states and 7747 transitions. Word has length 87 [2021-11-03 05:42:09,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:42:09,642 INFO L470 AbstractCegarLoop]: Abstraction has 4730 states and 7747 transitions. [2021-11-03 05:42:09,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2021-11-03 05:42:09,642 INFO L276 IsEmpty]: Start isEmpty. Operand 4730 states and 7747 transitions. [2021-11-03 05:42:09,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-03 05:42:09,645 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:42:09,645 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:42:09,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-03 05:42:09,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:42:09,861 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-03 05:42:09,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:42:09,862 INFO L85 PathProgramCache]: Analyzing trace with hash -195018581, now seen corresponding path program 1 times [2021-11-03 05:42:09,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:42:09,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [350292513] [2021-11-03 05:42:09,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:42:09,864 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:42:09,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:42:09,865 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:42:09,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 05:42:10,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:42:10,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:42:10,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:42:10,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:42:10,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:42:10,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:42:10,839 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:42:10,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [350292513] [2021-11-03 05:42:10,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [350292513] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:42:10,839 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:42:10,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 05:42:10,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888565391] [2021-11-03 05:42:10,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:42:10,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:42:10,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:42:10,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:42:10,841 INFO L87 Difference]: Start difference. First operand 4730 states and 7747 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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) [2021-11-03 05:42:11,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:42:11,506 INFO L93 Difference]: Finished difference Result 13732 states and 22484 transitions. [2021-11-03 05:42:11,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:42:11,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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 88 [2021-11-03 05:42:11,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:42:11,520 INFO L225 Difference]: With dead ends: 13732 [2021-11-03 05:42:11,520 INFO L226 Difference]: Without dead ends: 9122 [2021-11-03 05:42:11,527 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:42:11,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9122 states. [2021-11-03 05:42:12,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9122 to 5207. [2021-11-03 05:42:12,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5207 states, 5175 states have (on average 1.6641545893719807) internal successors, (8612), 5206 states have internal predecessors, (8612), 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) [2021-11-03 05:42:12,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5207 states to 5207 states and 8612 transitions. [2021-11-03 05:42:12,127 INFO L78 Accepts]: Start accepts. Automaton has 5207 states and 8612 transitions. Word has length 88 [2021-11-03 05:42:12,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:42:12,128 INFO L470 AbstractCegarLoop]: Abstraction has 5207 states and 8612 transitions. [2021-11-03 05:42:12,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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) [2021-11-03 05:42:12,128 INFO L276 IsEmpty]: Start isEmpty. Operand 5207 states and 8612 transitions. [2021-11-03 05:42:12,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-03 05:42:12,132 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:42:12,133 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:42:12,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-03 05:42:12,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:42:12,348 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-03 05:42:12,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:42:12,348 INFO L85 PathProgramCache]: Analyzing trace with hash 228660706, now seen corresponding path program 1 times [2021-11-03 05:42:12,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:42:12,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1680721069] [2021-11-03 05:42:12,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:42:12,349 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:42:12,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:42:12,351 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:42:12,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-03 05:42:12,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:42:13,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:42:13,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:42:13,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:42:13,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:42:13,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:42:13,347 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:42:13,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1680721069] [2021-11-03 05:42:13,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1680721069] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:42:13,347 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:42:13,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 05:42:13,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205764797] [2021-11-03 05:42:13,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:42:13,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:42:13,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:42:13,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:42:13,349 INFO L87 Difference]: Start difference. First operand 5207 states and 8612 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:14,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:42:14,094 INFO L93 Difference]: Finished difference Result 15140 states and 25047 transitions. [2021-11-03 05:42:14,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:42:14,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-03 05:42:14,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:42:14,108 INFO L225 Difference]: With dead ends: 15140 [2021-11-03 05:42:14,108 INFO L226 Difference]: Without dead ends: 10062 [2021-11-03 05:42:14,116 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:42:14,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10062 states. [2021-11-03 05:42:14,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10062 to 6147. [2021-11-03 05:42:14,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6147 states, 6115 states have (on average 1.6878168438266559) internal successors, (10321), 6146 states have internal predecessors, (10321), 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) [2021-11-03 05:42:14,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6147 states to 6147 states and 10321 transitions. [2021-11-03 05:42:14,620 INFO L78 Accepts]: Start accepts. Automaton has 6147 states and 10321 transitions. Word has length 89 [2021-11-03 05:42:14,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:42:14,620 INFO L470 AbstractCegarLoop]: Abstraction has 6147 states and 10321 transitions. [2021-11-03 05:42:14,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:14,620 INFO L276 IsEmpty]: Start isEmpty. Operand 6147 states and 10321 transitions. [2021-11-03 05:42:14,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-03 05:42:14,624 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:42:14,624 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:42:14,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-03 05:42:14,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:42:14,825 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-03 05:42:14,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:42:14,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1639090558, now seen corresponding path program 1 times [2021-11-03 05:42:14,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:42:14,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [45522959] [2021-11-03 05:42:14,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:42:14,827 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:42:14,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:42:14,828 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:42:14,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-03 05:42:15,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:42:15,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:42:15,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:42:15,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:42:15,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:42:15,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:42:15,878 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:42:15,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [45522959] [2021-11-03 05:42:15,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [45522959] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:42:15,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:42:15,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 05:42:15,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728600373] [2021-11-03 05:42:15,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:42:15,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:42:15,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:42:15,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:42:15,880 INFO L87 Difference]: Start difference. First operand 6147 states and 10321 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:16,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:42:16,783 INFO L93 Difference]: Finished difference Result 17691 states and 29688 transitions. [2021-11-03 05:42:16,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:42:16,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-03 05:42:16,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:42:16,799 INFO L225 Difference]: With dead ends: 17691 [2021-11-03 05:42:16,799 INFO L226 Difference]: Without dead ends: 11708 [2021-11-03 05:42:16,807 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:42:16,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11708 states. [2021-11-03 05:42:17,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11708 to 7793. [2021-11-03 05:42:17,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7793 states, 7761 states have (on average 1.7149851823218658) internal successors, (13310), 7792 states have internal predecessors, (13310), 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) [2021-11-03 05:42:17,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7793 states to 7793 states and 13310 transitions. [2021-11-03 05:42:17,282 INFO L78 Accepts]: Start accepts. Automaton has 7793 states and 13310 transitions. Word has length 90 [2021-11-03 05:42:17,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:42:17,282 INFO L470 AbstractCegarLoop]: Abstraction has 7793 states and 13310 transitions. [2021-11-03 05:42:17,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:42:17,283 INFO L276 IsEmpty]: Start isEmpty. Operand 7793 states and 13310 transitions. [2021-11-03 05:42:17,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-03 05:42:17,286 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:42:17,286 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:42:17,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-03 05:42:17,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:42:17,487 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-03 05:42:17,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:42:17,488 INFO L85 PathProgramCache]: Analyzing trace with hash 937517067, now seen corresponding path program 1 times [2021-11-03 05:42:17,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:42:17,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [828624180] [2021-11-03 05:42:17,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:42:17,488 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:42:17,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:42:17,489 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:42:17,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-03 05:42:18,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:42:18,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:42:18,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:42:18,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:42:18,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:42:18,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:42:18,548 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:42:18,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [828624180] [2021-11-03 05:42:18,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [828624180] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:42:18,548 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:42:18,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 05:42:18,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334530709] [2021-11-03 05:42:18,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:42:18,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:42:18,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:42:18,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:42:18,550 INFO L87 Difference]: Start difference. First operand 7793 states and 13310 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) [2021-11-03 05:42:19,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:42:19,530 INFO L93 Difference]: Finished difference Result 22336 states and 38129 transitions. [2021-11-03 05:42:19,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:42:19,539 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 91 [2021-11-03 05:42:19,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:42:19,562 INFO L225 Difference]: With dead ends: 22336 [2021-11-03 05:42:19,562 INFO L226 Difference]: Without dead ends: 14742 [2021-11-03 05:42:19,572 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:42:19,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14742 states. [2021-11-03 05:42:20,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14742 to 10827. [2021-11-03 05:42:20,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10827 states, 10795 states have (on average 1.7429365446966187) internal successors, (18815), 10826 states have internal predecessors, (18815), 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) [2021-11-03 05:42:20,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10827 states to 10827 states and 18815 transitions. [2021-11-03 05:42:20,325 INFO L78 Accepts]: Start accepts. Automaton has 10827 states and 18815 transitions. Word has length 91 [2021-11-03 05:42:20,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:42:20,326 INFO L470 AbstractCegarLoop]: Abstraction has 10827 states and 18815 transitions. [2021-11-03 05:42:20,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) [2021-11-03 05:42:20,326 INFO L276 IsEmpty]: Start isEmpty. Operand 10827 states and 18815 transitions. [2021-11-03 05:42:20,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-03 05:42:20,333 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:42:20,333 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:42:20,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-03 05:42:20,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:42:20,550 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-03 05:42:20,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:42:20,550 INFO L85 PathProgramCache]: Analyzing trace with hash -473896617, now seen corresponding path program 1 times [2021-11-03 05:42:20,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:42:20,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1631954713] [2021-11-03 05:42:20,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:42:20,551 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:42:20,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:42:20,552 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:42:20,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88fad09e-d4d1-4077-8924-3c15190f8e2c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-03 05:42:21,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:42:21,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:42:21,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:42:21,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:42:21,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:42:21,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:42:21,682 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:42:21,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1631954713] [2021-11-03 05:42:21,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1631954713] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:42:21,682 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:42:21,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 05:42:21,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159765700] [2021-11-03 05:42:21,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:42:21,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:42:21,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:42:21,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:42:21,684 INFO L87 Difference]: Start difference. First operand 10827 states and 18815 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)